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1. Physiological adaptive traits are a potential allele reservoir for maize genetic progress under challenging conditions

Author

Welcker, Claude, Spencer, Nadir Abusamra, Turc, Olivier, Granato, Italo, Chapuis, Romain, Madur, Delphine, Beauchene, Katia, Gouesnard, Brigitte, Draye, Xavier, Palaffre, Carine, Lorgeou, Josiane, Melkior, Stephane, Guillaume, Colin, Presterl, Thomas, Murigneux, Alain, Wisser, Randall J., Millet, Emilie J., van Eeuwijk, Fred, Charcosset, Alain, and Tardieu, François

Published
2022
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2. Exploring European maize genetic resources for adaptation using high-throughput genotyping, genomic prediction and landscape genomics

Author

Galaretto, Agustin Oscar, Galaretto, Agustin Oscar, BALCONI, Carla, Malvar, Rosa Ana, Redaelli, R, Anđelković, Violeta, Revilla, Pablo, Bauland, C, Gouesnard, Brigitte, Butron, Ana, Torri, A, Barata, A M, Kravić, Natalija, Mendes Moreira, P, Murariu, Danela, Šarčević, Hrvoje, Schierscher-Viret, B, Vincent, M, Zanetto, A, Kessel, B, Madur, D, Mary-Huard, Tristan, Pereira, A, Placinta, D D, Strigens, A, Goritschnig, Sandra, Charcosset, A, Nicolas, S, Galaretto, Agustin Oscar, Galaretto, Agustin Oscar, BALCONI, Carla, Malvar, Rosa Ana, Redaelli, R, Anđelković, Violeta, Revilla, Pablo, Bauland, C, Gouesnard, Brigitte, Butron, Ana, Torri, A, Barata, A M, Kravić, Natalija, Mendes Moreira, P, Murariu, Danela, Šarčević, Hrvoje, Schierscher-Viret, B, Vincent, M, Zanetto, A, Kessel, B, Madur, D, Mary-Huard, Tristan, Pereira, A, Placinta, D D, Strigens, A, Goritschnig, Sandra, Charcosset, A, and Nicolas, S

Abstract

Due to their local adaptation to contrasted environments, maize landraces are a valuable source of genetic diversity for facing climate change and low input agriculture challenges. Highthroughput pool genotyping (HPG) is a cost-effective approach to genotype maize landraces and identify promising sources of alleles for tolerance to abiotic stress. We applied this approach to a panel of 626 European landraces from 9 genebanks to i) characterize genetic diversity and its structuration; ii) perform genomic prediction (GP) of both adaptive and agronomic traits, and iii) perform association studies to identify genomic regions involved in phenotypic variation and/or in environmental adaptation, using climatic variables of landraces collection sites. Landraces genetic diversity was structured according to their geographical and historical origin, human utilization, and environmental conditions. This genetic structuration had strong effects on agro-morphological traits. GP yielded high accuracy for phenotypic and for some climatic variables from landrace collection sites. This suggests that GP could be used to characterize large collection of landraces maintained in genebanks. It also suggests that the genomic composition of landraces has been strongly shaped by environmental conditions of their collection sites. Association studies with both traits and environmental variables allowed us to detect important genomic regions, as exemplified by known loci Vgt2 and Vgt3 for flowering time. Finally, we investigated how these detected genomic regions relate to environmental variables in a non-linear fashion using a gradient forest approach. We identified drastic change for specific alleles along environmental gradients, suggesting that these loci could play a role in local adaptation of landraces. The combination of eco-genetic and genomic prediction opens an avenue for accelerating the characterization and use of genetic resources for prebreeding, in the context of adaptation to

Published
2024

3. Genetic and phenotypic evaluation of european maize landraces as a tool for conservation and valorization of agrobiodiversity

Author

Balconi, Carlotta, Balconi, Carlotta, Galaretto, Agustin, Malvar, Rosa Ana, Nicolas, Stéphane D., Redaelli, Rita, Andjelkovic, Violeta, Revilla, Pedro, Bauland, Cyril, Gouesnard, Brigitte, Butron, Ana, Torri, Alessio, Barata, Ana Maria, Kravic, Natalija, Combes, Valérie, Mendes-Moreira, Pedro, Murariu, Danela, Šarčević, Hrvoje, Schierscher-Viret, Beate, Vincent, Morgane, Zanetto, Anne, Kessel, Bettina, Madur, Delphine, Mary-Huard, Tristan, Pereira, André, Placinta, Domnica Daniela, Strigens, Alexandre, Charcosset, Alain, Goritschnig, Sandra, Balconi, Carlotta, Balconi, Carlotta, Galaretto, Agustin, Malvar, Rosa Ana, Nicolas, Stéphane D., Redaelli, Rita, Andjelkovic, Violeta, Revilla, Pedro, Bauland, Cyril, Gouesnard, Brigitte, Butron, Ana, Torri, Alessio, Barata, Ana Maria, Kravic, Natalija, Combes, Valérie, Mendes-Moreira, Pedro, Murariu, Danela, Šarčević, Hrvoje, Schierscher-Viret, Beate, Vincent, Morgane, Zanetto, Anne, Kessel, Bettina, Madur, Delphine, Mary-Huard, Tristan, Pereira, André, Placinta, Domnica Daniela, Strigens, Alexandre, Charcosset, Alain, and Goritschnig, Sandra

Abstract

The ECPGR European Evaluation Network (EVA) for Maize involves genebanks, research institutions, and private breeding companies from nine countries focusing on the valorization of maize genetic resources across Europe. This study describes a diverse collection of 626 local landraces and traditional varieties of maize (Zea mays L.) from nine European genebanks, including criteria for selection of the collection and its genetic and phenotypic diversity. High-throughput pool genotyping grouped the landraces into nine genetic groups with a threshold of 0.6 admixture, while 277 accessions were designated admixed and likely to have resulted from previous breeding activities. The grouping correlated well with the geographic origins of the collection, also reflecting the various pathways of introduction of maize to Europe. Phenotypic evaluations of 588 accessions for flowering time and plant architecture in multilocation trials over three years confirmed the great diversity within the collection, although phenotypic clusters only partially correlated with the genetic grouping. The EVA approach promotes conservation of genetic resources and opens an opportunity to increase genetic variability for developing improved varieties and populations for farmers, with better adaptation to specific environments and greater tolerance to various stresses. As such, the EVA maize collection provides valuable sources of diversity for facing climate change due to the varieties’ local adaptation.

Published
2024

6. Genotyping-by-sequencing highlights original diversity patterns within a European collection of 1191 maize flint lines, as compared to the maize USDA genebank

Author

Gouesnard, Brigitte, Negro, Sandra, Laffray, Amélie, Glaubitz, Jeff, Melchinger, Albrecht, Revilla, Pedro, Moreno-Gonzalez, Jesus, Madur, Delphine, Combes, Valérie, Tollon-Cordet, Christine, Laborde, Jacques, Kermarrec, Dominique, Bauland, Cyril, Moreau, Laurence, Charcosset, Alain, and Nicolas, Stéphane

Published
2017
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8. Simulating the effect of flowering time on maize individual leaf area in contrasting environmental scenarios

Author

Lacube, Sebastien, Manceau, Loïc, Welcker, Claude, Millet, Emilie J, Gouesnard, Brigitte, Palaffre, Carine, Ribaut, Jean-Marcel, Hammer, Graeme, Parent, Boris, Tardieu, François, Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Wageningen University and Research [Wageningen] (WUR), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Unité expérimentale du maïs (BORDX ST-MARTIN UE), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), International Maize and Wheat Improvement Center (CIMMYT), Consultative Group on International Agricultural Research [CGIAR] (CGIAR), University of Queensland [Brisbane], ANR-10-BTBR-0001,AMAIZING,Développer de nouvelles variétés de maïs pour une agriculture durable: une approche intégrée de la génomique à la sélection(2010), ANR-11-INBS-0012,PHENOME,Centre français de phénomique végétale(2011), European Project: 244374,EC:FP7:KBBE,FP7-KBBE-2009-3,DROPS(2010), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences, Leaf growth, Light, Whole plant, whole plant, Zea mays, Wiskundige en Statistische Methoden - Biometris, Soil, genetic variability, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Mathematical and Statistical Methods - Biometris, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, model, Drought, AcademicSubjects/SCI01210, Temperature, Water, temperature, PE&RC, Research Papers, whole-plant, Europe, Plant Leaves, Plant—Environment Interactions, leaf growth, Genetic variability, light, Model
Abstract

The quality of yield prediction is linked to that of leaf area. We first analysed the consequences of flowering time and environmental conditions on the area of individual leaves in 127 genotypes presenting contrasting flowering times in fields of Europe, Mexico, and Kenya. Flowering time was the strongest determinant of leaf area. Combined with a detailed field experiment, this experiment showed a large effect of flowering time on the final leaf number and on the distribution of leaf growth rate and growth duration along leaf ranks, in terms of both length and width. Equations with a limited number of genetic parameters predicted the beginning, end, and maximum growth rate (length and width) for each leaf rank. The genotype-specific environmental effects were analysed with datasets in phenotyping platforms that assessed the effects (i) of the amount of intercepted light on leaf width, and (ii) of temperature, evaporative demand, and soil water potential on leaf elongation rate. The resulting model was successfully tested for 31 hybrids in 15 European and Mexican fields. It potentially allows prediction of the vertical distribution of leaf area of a large number of genotypes in contrasting field conditions, based on phenomics and on sensor networks., Flowering time affects all processes governing whole-plant leaf area, namely rates, durations, and sensitivity to environmental conditions. Genotype dependency was assessed via large phenomic datasets in field and controlled conditions.

Published
2020
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9. Physiological adaptive traits are a potential allele reservoir for maize genetic progress under challenging conditions

Author

UCL - SST/ELI/ELIA - Agronomy, Welcker, Claude, Spencer, Nadir Abusamra, Turc, Olivier, Granato, Italo, Chapuis, Romain, Madur, Delphine, Beauchene, Katia, Gouesnard, Brigitte, Draye, Xavier, Palaffre, Carine, Lorgeou, Josiane, Melkior, Stephane, Guillaume, Colin, Tardieu, François, UCL - SST/ELI/ELIA - Agronomy, Welcker, Claude, Spencer, Nadir Abusamra, Turc, Olivier, Granato, Italo, Chapuis, Romain, Madur, Delphine, Beauchene, Katia, Gouesnard, Brigitte, Draye, Xavier, Palaffre, Carine, Lorgeou, Josiane, Melkior, Stephane, Guillaume, Colin, and Tardieu, François

Abstract

Combined phenomic and genomic approaches are required to evaluate the margin of progress of breeding strategies. Here, we analyze 65 years of genetic progress in maize yield, which was similar (101 kg ha−1 year−1 ) across most frequent environmental scenarios in the European growing area. Yield gains were linked to physiologically simple traits (plant phenology and architecture) which indirectly affected reproductive development and light interception in all studied environments, marked by significant genomic signatures of selection. Conversely, studied physiological processes involved in stress adaptation remained phenotypically unchanged (e.g. stomatal conductance and growth sensitivity to drought) and showed no signatures of selection. By selecting for yield, breeders indirectly selected traits with stable effects on yield, but not physiological traits whose effects on yield can be positive or negative depending on environmental conditions. Because yield stability under climate change is desirable, novel breeding strategies may be needed for exploiting alleles governing physiological adaptive traits.

Published
2022

10. Genetic diversity of maize landraces from the South-West of France

Author

NICOLAS, Stéphane, RONFORT, Joëlle, DIAW, Yacine, TOLLON-CORDET, Christine, CHARCOSSET, Alain, NICOLAS, D, MADUR, Delphine, LLE RONFORT, Joë, DAVID, Jacques, GOUESNARD, Brigitte, Institut Sénégalais de Recherches Agricoles [Dakar] (ISRA), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), AgroParisTech-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), West African Agricultural Productivity Program (WAAPP, http://www.waapp-ppaao.org/en) given by Institut Sénégalais de Recherches Agricoles (ISRA, https://www.isra.sn/), and ANR-10-BTBR-0001,AMAIZING,Développer de nouvelles variétés de maïs pour une agriculture durable: une approche intégrée de la génomique à la sélection(2010)

Subjects
0106 biological sciences, Germplasm, European People, [SDV]Life Sciences [q-bio], 01 natural sciences, Geographical locations, Gene flow, NUMBER, Mathematical and Statistical Techniques, Ethnicities, population genetic structure, 2. Zero hunger, 0303 health sciences, Principal Component Analysis, Multidisciplinary, MAYS L, Geography, Statistics, Eukaryota, RACES, genetic diversity, Plants, RFLP DIVERSITY, Italian People, Phylogeography, VARIABILITY, Experimental Organism Systems, Biogeography, Seeds, Physical Sciences, French Pyrenees, Medicine, France, Research Article, Gene Flow, EUROPE, Genotype, Science, Climatic adaptation, Biology, Research and Analysis Methods, Polymorphism, Single Nucleotide, Zea mays, Evolution, Molecular, 03 medical and health sciences, Model Organisms, Genetic drift, Plant and Algal Models, Zea mays L, Genetic variation, Genetics, Contact zone, Grasses, European Union, POPULATION-STRUCTURE, Statistical Methods, 030304 developmental biology, Hybrid, Genetic diversity, Evolutionary Biology, [SDV.GEN]Life Sciences [q-bio]/Genetics, Population Biology, landraces, Genetic Drift, Ecology and Environmental Sciences, Organisms, Genetic Variation, Biology and Life Sciences, DNA, 15. Life on land, Maize, INDIVIDUALS, [SDV.BV.AP]Life Sciences [q-bio]/Vegetal Biology/Plant breeding, Agronomy, DOMESTICATION, Multivariate Analysis, Animal Studies, Earth Sciences, Hybridization, Genetic, Population Groupings, People and places, Population Genetics, Mathematics, 010606 plant biology & botany, Microsatellite Repeats
Abstract

From the 17th century until the arrival of hybrids in 1960s, maize landraces were cultivated in the South-West of France, a traditional region for maize cultivation. A set of landraces were collected in this region between the 1950s and 1980s and were then conservedex situin a germplam collection. Previous studies using molecular markers on approx. twenty landraces fo this region showed that they belonged to a Pyrenees-Galicia Flint genetic group and originated from hybridization between Caribbean and Northern Flint germplasms introduced in Europe. In this study, we assessed the structure and genetic diversity of 194 SWF maize landraces to elucidate their origin, using a 50K SNP array and a bulk DNA approach. We identified two weakly differentiated genetic groups, one in the Western part and the other in the Eastern part. We highlighted the existence of a longitudinal gradient along the SWF area that was probably maintained through the interplay between genetic drifts and restricted gene flows, rather than through differential climatic adaptation. The contact zone between the two groups observed near the Garonne valley may be the result of these evolutionnary forces. We found only few significant cases of hybridization between Caribbean and Northern Flint germplasms in the region. We also found gene flows from various maize genetic groups to SWF landraces. Thus, we assumed that SWF landraces had a multiple origin with a slightly higher influence of Tropical germplasm in the West and preponderance of Northern Flint germplasm in the East.

Published
2021
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11. Bridging genomics and genetic diversity: linkage disequilibrium structure and association mapping in maize and other cereals

Author

Veyrieras, Jean-Baptiste, Camus-Kulandaivelu, Letizia, Gouesnard, Brigitte, Manicacci, Domenica, and Charcosset, Alain

Subjects
Genomics -- Research, Corn -- Genetic aspects, Grain -- Genetic aspects, Biological diversity -- Research, Quantitative trait loci -- Models, Linkage (Genetics) -- Research, Plant breeding -- Research, Agricultural industry, Business
Abstract

Linkage disequilibrium (LD) and association mapping s receiving considerable attention in the plant genetics community for its potential to use existing genetic resources collections to fine map quantitative trait loci (QTL), validate candidate genes, and identify alleles of interest. Based on investigations in maize (Zea mays L.) either published or recently conducted in our group, we discuss three elements of particular importance for conducting association mapping or interpreting the results: (i) the analysis of population structure into subgroups, (ii) its use to control for spurious associations and consequences in the specific case of differential selection among subgroups, and (iii) the analysis of the local structure of LD into haplotypes and its consequences on the resolution and the application of LD mapping. Consequences and perspecutives for plant breeding are briefly discussed.

Published
2008

12. Evaluating the reliability of Structure outputs in case of relatedness between individuals

Author

Camus-Kulandaivelu, Letizia, Veyrieras, Jean-Baptiste, Gouesnard, Brigitte, Charcosset, Alain, and Manicacci, Domenica

Subjects
Plant breeding -- Research, Plant populations -- Analysis, Agricultural industry, Business
Abstract

Inference of population structure from neutral marker loci is a key issue for association genetics. However, the presence of highly related individuals, commonly observed in breeders' panels, may lead to deviation from model hypotheses and therefore unreliable group assignment. The present note proposes a tool to help interpret Structure software outputs on populations that include highly related individuals, such as plant breeding material. We ran Structure software on simple sequence repeat (SSR) data from two maize (Zea mays L. ssp. mays) inbred panels. We propose a criterion to evaluate Structure stability based on Euclidian distance between outputs. This approach shows a high stability across runs for the panel composed of first cycle inbred lines. On the contrary, the presence of highly related individuals in the second panel induces strong instability in Structure outputs.

Published
2007

13. Maize adaptation to temperate climate: relationship between population structure and polymorphism in the Dwarf8 gene

Author

Camus-Kulandaivelu, Letizia, Veyrieras, Jean-Baptiste, Madur, Delphine, Combes, Valerie, Fourmann, Marie, Barraud, Stephanie, Dubreuil, Pierre, Gouesnard, Brigitte, Manicacci, Domenica, and Charcosset, Alain

Subjects
Corn -- Genetic aspects, Corn -- Research, Gene mutations -- Research, Genetic polymorphisms -- Research, Dwarf plants -- Genetic aspects, Dwarf plants -- Research, Biological sciences
Abstract

To investigate the genetic basis of maize adaptation to temperate climate, collections of 375 inbred lines and 275 landraces, representative of American and European diversity, were evaluated for flowering time under short- and long-day conditions. The inbred line collection was genotyped for 55 genomewide simple sequence repeat (SSR) markers. Comparison of inbred line population structure with that of landraces, as determined with 24 SSR loci, underlined strong effects of both historical and modern selection on population structure and a clear relationship with geographical origins. The late tropical groups and the early 'Northern Flint' group from the northern United States and northern Europe exhibited different flowering times. Both collections were genotyped for a 6-bp insertion/deletion in the Dwarf8 (D8idp) gene, previously reported to be potentially involved in flowering time variation in a 102 American inbred panel. Among-group D8idp differentiation was much higher than that for any SSR marker, suggesting diversifying selection. Correcting for population structure, D8idp was associated with flowering time under long-day conditions, the deletion allele showing an average earlier flowering of 29 degree days for inbreds and 145 degree days for landraces. Additionally, the deletion allele occurred at a high frequency (>80%) in Northern Flint while being almost absent (

Published
2006

20. Responses to selection for adaptation to temperate conditions in tropical drought tolerant maize production

Author

Gouesnard, Brigitte, Zanetto, Anne, Palaffre, Carine, Chapuis, Romain, Arca, Mariangela, Nicolas, Stephane, Charcosset, Alain, Welcker, Claude, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Unité expérimentale du maïs (BORDX ST-MARTIN UE), Institut National de la Recherche Agronomique (INRA), Domaine expérimental de Melgueil (MONTP MELGUEIL UE), Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), and Agropolis International. Montpellier, FRA.

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2019

21. Diversity analysis within a collection of 1191 flint maize inbred lines using genotyping-by-sequencing

Author

Gouesnard, Brigitte, Negro, Sandra Silvia, LAFFRAY, Amélie, Glaubitz, Jeff, Melchinger, A.E., Revilla, Pedro, Moreno-Gonzalez, Jesus, Madur, Delphine, Tollon-Cordet, Christine, Laborde, Jacques, Kermarrec, Dominique, Bauland, Cyril, Moreau, Laurence, Charcosset, Alain, Nicolas, Stephane, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Cornell University [New York], University of Hohenheim, Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Centro de Investigaciones Agrarias de Mabegondo (CIAM), Unité expérimentale du maïs (BORDX ST-MARTIN UE), Institut National de la Recherche Agronomique (INRA), Ressources Génétiques Végétales en Conditions Océaniques (RGCO), and Agropolis International. Montpellier, FRA.

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2019

22. Expanding european flint maize panels for genome-wide association and genomic selection studies

Author

Charcosset, Alain, Nicolas, Stephane, Madur, Delphine, Combes, Valerie, Pin, Sophie, Rincent, Renaud, Negro, Sandra Silvia, Kermarrec, Dominique, Palaffre, Carine, Gouesnard, Brigitte, Bauland, Cyril, Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Ressources Génétiques Végétales en Conditions Océaniques (RGCO), Institut National de la Recherche Agronomique (INRA), Unité expérimentale du maïs (BORDX ST-MARTIN UE), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
Abstract

International audience; European flint maize has proven to be an outstanding partner of North American dent maize for developing hybrids in Northern Europe. Use of publicly available genetic material in genetic studies is nevertheless complicated by a number of agronomic defaults, especially root and stalk lodging, tillering and a number of disease susceptibilities. A first series of lines available at INRA (Camus-Kulandaivelu et al. 2006, Genetics), was increased within the CornFed project, which involved German, Spanish and French partners, leading to 300 diverse lines. These lead to the discovery of QTL for biomass production (Rincent et al., 2014, Theor Appl Genet) and cold tolerance (Revilla et al., 2016, BMC plant Biology). To further increase this panel, Gouesnard et al. (2017, Theor appl Genet) conducted a GBS based survey of all flint type materials present in the INRA collection. Original lines not introgressed by dent germplasm were selected to complete the collection. They were also intercrossed to produce new recombinant materials between different genetic origins. This lead to a total of 1200 preexisting and new lines that were evaluated per se in a windy environment in Brittany to favor lodging, which revealed a high genetic variability. Association genetics will be conducted in the coming months. Finally, out of these lines, 350 lines selected within a narrow phenology range and showing limited lodging susceptibility have been crossed to a dent tester to conduct agronomic trials for adaptive traits, to be started in 2019.

Published
2019

24. Genome-wide SNP genotyping of DNA pools identifies original landraces to enrich maize breeding pools

Author

Nicolas, Stephane, Arca, Mariangela, Mary-Huard, Tristan, Le Paslier, Marie-Christine, Bauland, Cyril, Combes, Valerie, Madur, Delphine, Gouesnard, Brigitte, Charcosset, Alain, Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Etude du Polymorphisme des Génomes Végétaux (EPGV), Institut National de la Recherche Agronomique (INRA), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Agence Nationale de la Recherche (ANR), Association pour l'étude du mais (Promais)

Subjects
[SDV.BV]Life Sciences [q-bio]/Vegetal Biology
Abstract

National audience; Maize landraces germplasm have a very large genetic diversity that is still poorly characterized and exploited in plant breeding programs. We studied the effect of both human selection and environmental adaptation on genome-wide diversity of landraces with a focus on landraces-hybrid transition in order to identify interesting source of genetic diversity to enlarge modern breeding pools. We developed a high-throughput, cheap and labor saving DNA pooling approach based on 50K SNP maize Illumina array and estimated thereby allelic frequencies of 23412 SNP in 156 landraces representing worldwide maize diversity. We compared the diversity of this collection at genome-wide scale level with that of a panel of 336 inbred lines. Our new approach: (i) gives accurate allelic frequencies estimation that are reproducible across laboratories, (ii) protects both against false detection of allele presence within landraces and against ascertainment bias. Modified Roger's genetic Distance estimated from 23412 SNP and 17 SSR on same DNA pool are highly correlated, which validates our approach. Accordingly, structuration analysis based on SNP gives consistent results with SSR for higher levels of structuration but gives a slightly different pictures for more advanced structuration levels, suggesting that SNP and SSR could capture differently recent evolution. Gene diversity of landraces varies strongly along the genome and according to geographic origins. We identified 376 SNP under diversifying selection unraveling a selective footprints in Tga1/Su1 regions. While some maize landraces were closely related to several inbred lines and strongly contributed to modern breeding pools as Reid Yellow Dent or Lancaster Surecrop, some other have no related inbred lines and seem to have poorly contributed. We identified limited diversity loss or selective sweep between landraces and inbred lines, excepted in centromeric regions. For these regions, original landraces could be interesting to enlarge genetic diversity of modern breeding pools.

Published
2018

25. Diversity of maize landraces from south-west of France: origin and morphological differentiation analyzes

Author

Diaw, Yacine, Tollon-Cordet, Christine, Zanetto, Anne, Charcosset, Alain, David, Jacques, Ronfort, Joelle, Gouesnard, Brigitte, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), International Star Riders Association (ISRA), Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Funding acknowledgement: ANR France : Amaizing, WAAPP (ISRA Senegal), ANR-10-BTBR-0001,AMAIZING,Développer de nouvelles variétés de maïs pour une agriculture durable: une approche intégrée de la génomique à la sélection(2010), and Agropolis International. Montpellier, FRA.

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience; In south-west of France, maize landraces had evolved under environmental condition and human management since 17th century and until the arrival of the hybrids in1960s. In the sixties, these landraces have been conserved ex situ at the maize biological resource center (INRA, Mauguio, France). Previous genetic studies of a sample of this collection allowed identifying a distinct genetic group named Pyrenees-Galicia. This group has been hypothesized to come from an hybridization between the Northern Flint group and the Caribbean group In this study, we analysed a broader sample of the INRA collection in order to determine their genetic structure and to describe their morphological diversity. Firstly, we analysed genetic diversity of 194 maize landraces from south-west of France with the 50K SNPs array and using a bulk DNA sample of 15 plants. A non-supervised admixture analysis was performed by adding 148 American and European landraces. This analysis shown that there were 8 genetic groups. In fact, two separate genetic groups were identified in South-west of France, one in the Western part and one in the Eastern part. Secondly, we assessed morphological differentiation between the two genetic groups found in south-west of France, using a principal component analysis and an analysis of variance on 15 traits. Landraces located in West part of south-western France are earlier with bigger kernels and ears with a lower number of rows than landraces located in East part. Finally, we performed a principal coordinate analysis (PCoA) on 194 maize landraces from south-west of France. We showed that landraces were distributed continuously along the first component of PCoA analysis. This component was correlated with geographical coordinates of the landrace collection sites, highlighting a longitudinal gradient and a latitudinal gradient.

Published
2018

26. Interactions of plant-beneficial rhizosphere bacteria according to cereal genotype

Author

Moenne-Loccoz, Yvan, Valente, Jordan, Bouffaud, Marie-Lara, Gouesnard, Brigitte, Le Gouis, Jacques, Muller, Daniel, prigent-combaret, Claire, Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM), Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Ecole Nationale Vétérinaire de Lyon (ENVL)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche Agronomique (INRA), VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Génétique Diversité et Ecophysiologie des Céréales (GDEC), Institut National de la Recherche Agronomique (INRA)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Vétérinaire de Lyon (ENVL)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Recherche Agronomique (INRA)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP), ProdInra, Archive Ouverte, Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Ecole Nationale Vétérinaire de Lyon (ENVL), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
cereal, QTL, [SDV]Life Sciences [q-bio], food and beverages, microbiome, phytostimulation, [SDV] Life Sciences [q-bio], céréale, PGPR, Rhizosphere, microbial community, génotype, rhizosphère, phytoprotection
Abstract

Book of abstracts, ISBN: 978-2-9563873-0-5, EAN: 9782956387305 p. 27Book of abstracts, ISBN: 978-2-9563873-0-5, EAN: 9782956387305p. 27; Roots of wheat and other cereals interact with a huge range of soil microorganisms, which colonize the rhizosphere and/or root tissues. This root-associated microbial community (sometimes termed the root microbiome) is important to consider because it includes both deleterious and symbiotic microorganisms. Therefore, it has a significant impact on plant growth, health and tolerance to stress. In this context, understanding root microbiome assembly and dynamics is of fundamental interest and could help design microbiome-based strategies for crop management. To address this issue, the significance of cereal genotype for root-microbiome interactions was studied. A relationship was found when comparing rhizobacterial communities with the phylogenetic distance between the corresponding plant genotypes, but this relationship held true only for a fraction of the community. It prompted us to assess how plant hosts selected for specific bacteria with plant-beneficial potential. This type of screening showed that the ability to interact with plant-beneficial bacteria had been largely counter-selected in modern wheat cultivars, yet it had been retained in some of them. The implications for plant-microbe interactions and breeding will be discussed.

Published
2018

27. The Zea French Biological Resource Centre: conservation and utilization of maize genetic resources in France

Author

Zanetto, Anne, Palaffre, Carine, Bauland, Cyril, Beigbeder, Jean, Castel, Stéphanie, Gouesnard, Brigitte, Lambert, Antoine, Raynaud, Christophe, Welcker, Claude, Charcosset, Alain, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Unité expérimentale du maïs (BORDX ST-MARTIN UE), Institut National de la Recherche Agronomique (INRA), Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Domaine expérimental de Melgueil (MONTP MELGUEIL UE), Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)

Subjects
zea mays, base de données, centre de ressources biologiques, Vegetal Biology, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ressource génétique, Biologie végétale, variabilité genotypique, diversité phénotypique
Abstract

National audience; Maize genetic resources are organized in France through the French maize genetic resources network. It includes public (INRA) and private actors (ProMaïs association). Maize Genetic resources include 1600 open pollinated populations and 4600 inbred lines. Their management is run by the Zea BRC (Biological Resource Center) shared between the UMR AGAP (populations) and the maize Experimental Unit of Saint Martin de Hinx (inbred lines). At national level, the Zea BRC is included in the French network RARe (Infrastructure Ressources Agronomiques pour la Recherche) and in the Plant network ARCAD. The basic activities of the Zea BRC are conservation, distribution and multiplication of populations and inbred lines. Genetic resources are distributed following international rules either with the International Treaty on Plant Genetic Resources for Food and Agriculture, the Nagoya Protocol or private rules (depending on the accession status). Information on genetic resources is available in the national database (Siregal) and a national portal (Florilège). Information on the traditional cultivation and use practices of populations can also be found on the Promaïs website. A large fraction of these genetic resources have been characterized for their genotypic diversity and phenotypic variation by the CRB and partner research labs. Genotyping of populations and first cycle inbred lines revealed new features regarding the introduction and spread of maize in Europe, as well as local geographical trends (Brandenbourg et al., 2017, Nicolas et al., Diaw et al., this meeting). Broad or heterotic group specific panels of inbred lines have been defined within CornFed, DROPS and Amaizing projects to conduct Genome Wide association mapping revealing key loci for flowering time, heat and drought tolerance (Millet et al., 2016, Bouchet et al., 2017, Gouesnard et al., Blein-Nicolas et al., this meeting). These valuable resources allowed the development of multi-parental populations and introgression libraries to further dissect the genetic mechanisms of adaptation traits. Discussions have been started at European level, to build a European Zea network to reinforce the means in conservation ant utilization of European maize genetic resources. The network would also permit a better sharing of taskforces and means in Europe and avoid gaps and losses in temperate genetic resources in Europe.

Published
2018

28. Diversity analysis within a collection of 1191 Flint collection using Genotyping By Sequencing

Author

Gouesnard, Brigitte, Negro, Sandra, LAFFRAY, Amélie, Glaubitz, Jeff, Melchinger, Albrecht, Revilla, Pedro, Moreno-Gonzalez, Jesus, Madur, Delphine, Combes, Valerie, Tollon-Cordet, Christine, Laborde, Jacques, Kermarrec, Dominique, Bauland, Cyril, Moreau, Laurence, Charcosset, Alain, Nicolas, Stephane, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Cornell University [New York], University of Hohenheim, Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Centro de Investigaciones Agrarias de Mabegondo (CIAM), Unité expérimentale du maïs (BORDX ST-MARTIN UE), Institut National de la Recherche Agronomique (INRA), and Ressources Génétiques Végétales en Conditions Océaniques (RGCO)

Subjects
[SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017

29. Analysis and structuration of the genetic diversity of Pyrenean maize populations with a 50K SNP array by a bulk and an one individual plant approach

Author

Diaw, Yacine, Tollon-Cordet, Christine, Zanetto, Anne, Charcosset, Alain, Gouesnard, Brigitte, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), and Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV]Life Sciences [q-bio], [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2017

30. French National Institute for Agricultural Research, France INRA–PROMAIS: 35 years of public-private cooperation in France on the conservation of maize genetic resources ‒ study of their diversity and methodology of use in breeding

Author

Charcosset, Alain, Zanetto, Anne, Gouesnard, Brigitte, Welcker, Claude, Bauland, Cyril, Moreau, Laurence, Palaffre, Carine, Barrière, Yves, Reymond, Matthieu, Murigneux, Alain, Mezmouk, Sofiane, Guérin, G., Melkior, S., Carolo, Pierre, Bossay, L., Revol, B., Sehabiague, Pierre, Ranc, Nicolas, Lambert, A., Beigbeder, Jean, Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Unité expérimentale du maïs (BORDX ST-MARTIN UE), Institut National de la Recherche Agronomique (INRA), Unité de Recherche Pluridisciplinaire Prairies et Plantes Fourragères (P3F), Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Unité de Mathématiques et Informatique Appliquées de Toulouse (MIAT INRA), Euralis Semences, Monsanto Company, Génétique et Amélioration des Fruits et Légumes (GAFL), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV]Life Sciences [q-bio], [SDE]Environmental Sciences, [SDV.IDA]Life Sciences [q-bio]/Food engineering, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, [INFO]Computer Science [cs], [MATH]Mathematics [math], ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2017

32. Ongoing activities within the project DIVERZEATY - Genetic diversity of Serbian maize local landraces and inbred lines

Author

Mikić, Sanja, Gouesnard, Brigitte, Andelkovic, Violeta, Dušan, Stanisavljević, Zanetto, Anne, Madur, Delphine, Bauland, Cyril, Laborde, Jacques, Milisavljević, Mira, Stojaković, Milisav, Charcosset, Alain, Institute of Field and Vegetable Crops [Novi Sad], Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Research Institute, Domaine expérimental de Melgueil (MONTP MELGUEIL UE), Institut National de la Recherche Agronomique (INRA), Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Unité expérimentale du maïs (BORDX ST-MARTIN UE), University of Belgrade, and Agence Nationale de la Recherche (ANR). FRA.

Subjects
DIVERZEATY, inbred lines, landraces, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, genetic diversity, maize
Abstract

National audience; Traditional landraces adapted to local conditions harbour alleles for traits of interest and may be of valuable contribution in enhancing the stability of maize production under increasing challenges of climatic changes. It is therefore of great importance to preserve and assess local maize populations as a potential source of favourable agronomic traits. As a part of the bilateral project DIVERZEATY between Serbia and France (2014-2015), ten local landraces and ten inbred lines, derived from local landraces of the Maize Research Institute Zemun Polje gene bank and the Institute of Field and Vegetable Crops collection, were characterised at a pilot scale. The analysed accessions from diverse regions of former SFR Yugoslavia were genotyped with MaizeSNP50 BeadChip and allelic frequencies for landraces were estimated from the bulked DNA. Principal coordinate analyses showed the genotypes cover a range of diversity. Four local dent landraces grouped with Corn Belt populations, four populations grouped closely to European OPVs and Northern flints, one landrace with Italian flints and one was grouped in the Mexican cluster within the first two axes and with Corn Belt on the third and fourth coordinates. Two inbred lines, developed from the Montenegrin landraces, and one inbred line, derived from a Slovenian landrace, grouped with Northern flint lines, whereas the others clustered with Stiff Stalk ones. The landraces and lines fit well to historical data about their origin and introduction of maize in the region.

Published
2015

33. Adaptation to temperate conditions of sub-tropical drought tolerant maize populations

Author

Gouesnard, Brigitte, Zanetto, Anne, Arca, Mariangela, Nicolas, Stephane, Charcosset, Alain, Welcker, Claude, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Domaine expérimental de Melgueil (MONTP MELGUEIL UE), Institut National de la Recherche Agronomique (INRA), Génétique Quantitative et Evolution - Le Moulon (Génétique Végétale) (GQE-Le Moulon), Centre National de la Recherche Scientifique (CNRS)-AgroParisTech-Université Paris-Sud - Paris 11 (UP11)-Institut National de la Recherche Agronomique (INRA), Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), European Project: 244374,EC:FP7:KBBE,FP7-KBBE-2009-3,DROPS(2010), Institut National de la Recherche Agronomique (INRA)-Université Paris-Sud - Paris 11 (UP11)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS), and Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences, food and beverages, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
Abstract

UMR AGAP - équipe GE²pop - Génomique évolutive et gestion des populations; National audience; For temperate areas, sources of drought tolerance can be found in tropical and sub-tropical breeding populations such as those developed by CIMMYT and other institutes in tropical areas. Their use in temperate germplasm needs their adaptation to climatic conditions, either by backcrossing or by selection. In 2008, we introduced 13 drought tolerant maize populations from Zimbabwe (CIMMYT) and Kenya (KARI). Based on a first evaluation of these populations, we chose four populations (DLCI, and Kikamba from KARI; ZM309 and ZM521 from CIMMYT) to be selected by mass selection in Mauguio (Mediterranean area). The mass selection was applied on early flowering date, short anthesis-silking interval, low smut, ear size. The selection intensities were 20% on the first cycle (200 full-sib ears on 1000 plants), and 5% on the second and third cycles (200 half-sib ears on 4000 plants in isolation field under low-irrigated condition). In 2014, the three cycles of selection of populations were evaluated in Mauguio under optimal conditions. The populations of the third cycles were 3.5 to 5.5 days early than populations of the first cycle, and ASI was reduced up to 8.5 days. Two bulked DNA samples of 100 plants of the first and the third cycle of each population were analyzed with the 50K SNP array. Allelic frequencies were estimated using the method developed by A. Charcosset team (Arca et al., in prep). We searched SNP under selection by analysis of variance and by the Fc parameter method (Goldringer and Bataillon, 2004). Around 5% of SNP were under selection. Among them, the four SNP, more frequent over populations, were located on chromosome 10 (bin 10.4) near the QTL of photoperiod found by Ducrocq et al. (2009). Assuming we have not lost drought tolerant alleles, the advanced cycles of populations are available for pre breeding.

Published
2015

34. Exploiter la diversité génétique pour comprendre les mécanismes de l’adaptation

Author

Ronfort, Joelle, Burgarella, Concetta, Chantret, Nathalie, David, Jacques, Ecarnot, Martin, Fréville, Hélène, Gay, Laurène, Gouesnard, Brigitte, Loridon, Karine, Muller, Marie-Helene, Prosperi, Jean-Marie, Ranwez, Vincent, Roumet, Pierre, Santoni, Sylvain, Tavaud-Pirra, Muriel, Vigouroux, Yves, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Diversité, adaptation, développement des plantes (UMR DIADE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Institut National de Recherche Agronomique (INRA). UAR Département Biologie et Amélioration des Plantes (0459)., and ProdInra, Migration

Subjects
[SDV.BV]Life Sciences [q-bio]/Vegetal Biology, [SDV.BV] Life Sciences [q-bio]/Vegetal Biology, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2014

35. Significance of the evolution of Zea mays and other Poaceae for rhizobacterial community composition

Author

Muller, Daniel, Bouffaud, Marie-Lara, Gouesnard, Brigitte, Moënne-Loccoz, Yvan, Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM), Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Ecole Nationale Vétérinaire de Lyon (ENVL), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Chautard, Marie-Gabrielle

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2012

36. Plant evolution and diversification a factor influencing selection of soil bacteria by roots

Author

Muller, Daniel, Bouffaud, Marie-Lara, Gouesnard, Brigitte, Moënne-Loccoz, Yvan, Chautard, Marie-Gabrielle, Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM), Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Ecole Nationale Vétérinaire de Lyon (ENVL), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

37. Identification of drought tolerance maize populations among the French Maize network of genetic resource collection

Author

Zanetto, Anne, Welcker, Claude, Malavieille, Serge, Marsal, Philippe, Noel, Philippe, Gouesnard, Brigitte, ProdInra, Migration, Domaine expérimental de Melgueil (MONTP MELGUEIL UE), Institut National de la Recherche Agronomique (INRA), Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), and Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)

Subjects
[SDV] Life Sciences [q-bio], [SDE] Environmental Sciences, BIOLOGIE DES POPULATIONS, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SDV]Life Sciences [q-bio], [SDE]Environmental Sciences, [SDV.IDA]Life Sciences [q-bio]/Food engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, [SDV.IDA] Life Sciences [q-bio]/Food engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

39. Heterosis, inbreeding depression and genetic diversity of Guadeloupean archipelago maize

Author

Siol, Mathieu, Welcker, Claude, Cinna, J.P., Felicite, Joseph, Boyat, Armand, Gouesnard, Brigitte, Domaine expérimental de Melgueil (MONTP MELGUEIL UE), Institut National de la Recherche Agronomique (INRA), Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Unité de recherche Productions végétales (CRAG ANT PROD V), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), UE 0805 Domaine expérimental Duclos-Godet, Institut National de la Recherche Agronomique (INRA)-Environnement et Agronomie (E.A.)-Génétique et amélioration des plantes (G.A.P.)-Domaine expérimental Duclos-Godet (DUCLOS-GODET), and ProdInra, Migration

Subjects
INBREEDING DEPRESSION, [SDV.GEN]Life Sciences [q-bio]/Genetics, POPULATION TRADITIONNELLE, DÉPRESSION DE CONSANGUINITÉ, VIGUEUR HYBRIDE, DIVERSITY, [SDV.GEN] Life Sciences [q-bio]/Genetics, LANDRACS, ComputingMilieux_MISCELLANEOUS, HETEROSIS
Abstract

National audience

Published
2005

40. European maize landraces : genetic diversity, core collection definition and methodology of use

Author

Gouesnard, Brigitte, Dallard, Jacques, Bertin, P., Boyat, Armand, Charcosset, A., Diversité et génomes des plantes cultivées (UMR DGPC), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA), UMR de Génétique Végétale, and Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences, zea mays, amélioration génétique, céréale, variété, maïs, europe, caractère agronomique, marqueur moléculaire, ressource génétique, Sciences agricoles, Agricultural sciences, sélection assistée par marqueurs
Abstract

International audience; Since its introduction in Europe five centuries ago, maize spread in Europe and numerous landraces have been cultivated. During the second half of the XXth century, large collections have been established to preserve this genetic diversity. The objectives of this paper are (i) to review recent results on the genetic structuration and the origin of European maize, (ii) to present the constitution of the representative core-collection of European maize landraces built in RESGEN CT96-088 project, and (iii) to study the methodology of use of these landraces in present breeding programs. Based on molecular markers, five studies found a high allelic richness in landraces from Mediterranean regions such as Spain, and (for two of them) a strong similarity between several populations from Southern Spain and a group of Caribbean populations. These studies also attest the originality of Northern Eastern Europe landraces, for which a similarity is observed with American Northern Flint landraces. Historical investigations confirm the hypothesis of introductions of maize from this origin in the North of Europe, only a few decades after introduction of tropical maize in Southern Spain by Colombus. Starting from a total of 2899 European landraces, we established with the Mstrat software a representative core collection of 96 maize accessions that maximizes allelic richness at molecular markers and best represents variation at phenotypic traits. This collection is characterized for traits of agronomical interest such as silage quality and insect tolerance. Regarding the transfer of relevant traits to elite material, comparison of F[2] versus backcross foundation populations showed that this last strategy leads to a higher population mean while not leading to a decrease in variance, therefore backcross method appears superior. Preliminary selection of superior material within a landrace did not increase average expected genetic gain but increased stability in variable environments. Molecular markers should prove helpful to extend this back-cross approach to the targeted transfer of donor interesting genomic regions.

Published
2005

41. Genetic diversity of maize in Europe : molecular analysis of ancient DNA from herbariums and comparison with molecular analysis of a large collection of populations

Author

Gouesnard, Brigitte, Chastanet, Monique, Tollon-Cordet, Christine, Dubreuil, Pierre, Boyat, Armand, Charcosset, Alain, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Centre d'Etudes des Mondes Africains (CEMAf), Université Paris 1 Panthéon-Sorbonne (UP1)-Université de Provence - Aix-Marseille 1-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Génétique Végétale (GV), Institut National de la Recherche Agronomique (INRA)-Université Paris-Sud - Paris 11 (UP11)-Institut National Agronomique Paris-Grignon (INA P-G)-Centre National de la Recherche Scientifique (CNRS), Bureau des Ressources Génétiques, INRA UMR DGPC, Institut National de la Recherche Agronomique (INRA), Université Panthéon-Sorbonne (UP1)-Université de Provence - Aix-Marseille 1-École pratique des hautes études (EPHE)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), and Université Paris 1 Panthéon-Sorbonne (UP1)-Université de Provence - Aix-Marseille 1-École pratique des hautes études (EPHE)

Subjects
Zea mays L, diversité génétique, [SDE]Environmental Sciences, herbier, genetic diversity, [SHS.HIST]Humanities and Social Sciences/History, ancient DNA, SSR, herbarium, ADN ancien
Abstract

European maize was introduced from Central America in the South of Europe at the end of the 15th century, and from Northern America in the North of Europe following the expeditions of the early 16th century. In order to better understand its later history in Europe, we compared the genetic diversity of European maize in the 19th century and the first half of the 20th century, represented by plants collected in an ancient herbarium, with the diversity of American and European maize populations collected around 50 years ago and maintained as living samples in collections. Samples were obtained from the herbarium of Paris (MNHN). Fractions of leaves or spikelets (from 2 to 37 mg) were collected from 17 plates. Samples are 138 years old in average (from the second half of the 18th century to 1949). They originated from all over France, with half in the Paris basin. DNA was successfully extracted from leave or spikelet fragments, using the Kit Qiagen® method. Precautions were taken to avoid contamination with foreign DNA. A total of 80 μl of DNA was obtained per sample. DNA samples were analysed with 14 nuclear mocrosatellite markers, ten of them displaying a tetra nucleotidic motive. From 4 to 14 markers could be analysed per sample.; L'objectif de l'étude est d'analyser la diversité des maïs en Europe en confrontant la diversité analysée à partir d'herbiers anciens avec celle trouvée dans une étude réalisée sur 273 populations de maïs d'origine américaine et européenne, conservées en semences et renouvelées régulièrement depuis cinquante ans environ. L'étude a porté sur 17 planches de l'Herbier du Muséum d'Histoire Naturelle de Paris datant de 138 ans en moyenne, prélevées en France et majoritairement dans le Bassin parisien. A partir de fragments de feuilles ou d'épillets, l'ADN a été extrait par la méthode du Kit Qiagen et analysé avec succès pour 4 à 14 marqueurs microsatellites nucléaires. Analysée à l'aide d'une matrice de distance de Roger, la variabilité génétique se structure en trois groupes où sont majoritaires respectivement : les populations nord américaines anciennes (Northern Flint), les autres populations américaines, les populations européennes. Les plantes d'herbier se positionnent essentiellement dans le groupe des populations européennes. Ce résultat est confirmé par l'identification des populations les plus proches de chaque planche d'herbier. L'hybridation entre les Northern Flint et les populations Caraïbes et du sud de l'Espagne, qui est supposée avoir donné naissance à la diversité européenne, apparaît donc antérieure à la collecte des plantes d'herbier.

Published
2004

42. Structuration de la variabilité génétique d'une collection de populations de maïs du Piedmont pyrénéen et stratégies d'échantillonnage de core collection

Author

Gouesnard, Brigitte, Rakotomamonjy, S., Dallard, J., Boyat, Armand, Diversité et génomes des plantes cultivées (UMR DGPC), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA), and ProdInra, Migration

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], ComputingMilieux_MISCELLANEOUS, METHODOLOGIE
Abstract

National audience

Published
2002

43. A network for the management of genetic resources of maize populations in France

Author

Dallard, J., Noel, P., Gouesnard, Brigitte, Boyat, Armand, ProdInra, Migration, Diversité et génomes des plantes cultivées (UMR DGPC), and Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV] Life Sciences [q-bio], CONSERVATION DES SEMENCES, [SDV]Life Sciences [q-bio], BANQUE DE GENES, AMELIORATION DES PLANTES, GENETIQUE VEGETALE, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2000

44. Genotype x environment interactions in maize hybrids from temperate or highland tropical origin

Author

Giauffret, Catherine, Lothrop, J., Dorvillez, Daniel, Gouesnard, Brigitte, Derieux, M., Unité de recherche Génétique et amélioration des plantes (GAP), Institut National de la Recherche Agronomique (INRA), Unité de recherches de génétique et amélioration des plantes, and ProdInra, Migration

Subjects
[SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], FACTEUR DE L'ENVIRONNEMENT, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2000

45. Evaluation of late inbred lines in order to improve early single maize crosses by the biadditive model and predictive genetic models

Author

Ayrault, S., Gouesnard, Brigitte, Boyat, Armand, ProdInra, Migration, Unité de recherches de génétique et amélioration des plantes, and Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences, [SDV.SA] Life Sciences [q-bio]/Agricultural sciences, GENETIQUE, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1999

46. Incidence agro-écologique de la diffusion de plantes cultivées transgéniques dans les régions tropicales

Author

Charrier, A., Sanou, J., Gouesnard, Brigitte, Unité de recherches de génétique et amélioration des plantes, Institut National de la Recherche Agronomique (INRA), and ProdInra, Migration

Subjects
[SDV.SA.AEP] Life Sciences [q-bio]/Agricultural sciences/Agriculture, economy and politics, [SDV.SA.AEP]Life Sciences [q-bio]/Agricultural sciences/Agriculture, economy and politics, RESISTANCE GENETIQUE, ComputingMilieux_MISCELLANEOUS, ESPECE CULTIVEE
Abstract

National audience

Published
1998

47. Bilan de dix années d’évaluation de lignées de maïs créées par sélection généalogique multicaractère combinant tolérance à la pyrale et aptitude à la combinaison pour le rendement

Author

ANGLADE, Pierre, Boyat, Armand, Gouesnard, Brigitte, Vible, J.C., DUPIN, Michel, Unité de recherche Zoologie Forestière (URZF), Institut National de la Recherche Agronomique (INRA), Unité de recherches de génétique et amélioration des plantes, and Unité expérimentale du GEVES de Saint Martin de Hinx

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
Abstract

International audience; A multitrait pedigree breeding system including evaluation for European corn borer (Ostrinia nubilalis Hbn.) tolerance and other agronomic traits (yield, earliness, stalk lodging) was used for 16 years to create inbred lines from very different temperate germplasms. The ultimate evaluation of the 63 inbred lines was made in comparison with stable known references. The results allowed us to classify this material into three tolerance classes to the insect and demonstrated the efficacy of the method. High-yielding combining ability might be associated with earliness, lodging tolerance and good insect tolerance. The value of some early flint European materials and of Argentinian sources was discussed to improve European corn borer tolerance. (© Inra/Elsevier, Paris.); Pour associer la tolérance à la pyrale (O. nubilalis Hbn.) aux caractères agronomiques habituellement sélectionnés, des programmes de création et d’évaluation de lignées du maïs ont été développés par les laboratoires Inra du Maïs (Montpellier, Saint-Martin de Hinx, Bordeaux). En pépinière et dans les essais d’évaluation, la tolérance est exprimée par une note de dégâts à maturité corrigée pour les différences de précocité du matériel. L’utilisation de lignées étalons éprouvées et reconnues stables permet le classement de lignées en trois groupes de tolérance. La méthode de sélection généalogique repose sur une sélection simultanée par niveaux indépendants pour les deux caractères. Des essais de valeur hybride sur différents testeurs complètent les tris en valeur propre. Du matériel tolérant est obtenu dans les différentes sources utilisées. Toutefois, le matériel précoce européen et des sources argentines paraissent plus favorables à l’obtention de lignées tolérantes. Ces programmes ont permis l’obtention d’une soixantaine de lignées à forte aptitude à la combinaison pour le rendement et à bons niveaux de tolérance à la pyrale, avec des gains de précocité et de résistance à la verse. (© Inra/Elsevier, Paris.)

Published
1998

48. Assessment of 10 years of maize pedigree breeding for European corn borer tolerance and high-yielding combining ability

Author

ANGLADE, Pierre, Boyat, Armand, Gouesnard, Brigitte, Vible, J.C., DUPIN, Michel, Unité de recherche Zoologie Forestière (URZF), Institut National de la Recherche Agronomique (INRA), Unité de recherches de génétique et amélioration des plantes, and Unité expérimentale du GEVES de Saint Martin de Hinx

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
Abstract

International audience; A multitrait pedigree breeding system including evaluation for European corn borer (Ostrinia nubilalis Hbn.) tolerance and other agronomic traits (yield, earliness, stalk lodging) was used for 16 years to create inbred lines from very different temperate germplasms. The ultimate evaluation of the 63 inbred lines was made in comparison with stable known references. The results allowed us to classify this material into three tolerance classes to the insect and demonstrated the efficacy of the method. High-yielding combining ability might be associated with earliness, lodging tolerance and good insect tolerance. The value of some early flint European materials and of Argentinian sources was discussed to improve European corn borer tolerance. (© Inra/Elsevier, Paris.); Pour associer la tolérance à la pyrale (O. nubilalis Hbn.) aux caractères agronomiques habituellement sélectionnés, des programmes de création et d’évaluation de lignées du maïs ont été développés par les laboratoires Inra du Maïs (Montpellier, Saint-Martin de Hinx, Bordeaux). En pépinière et dans les essais d’évaluation, la tolérance est exprimée par une note de dégâts à maturité corrigée pour les différences de précocité du matériel. L’utilisation de lignées étalons éprouvées et reconnues stables permet le classement de lignées en trois groupes de tolérance. La méthode de sélection généalogique repose sur une sélection simultanée par niveaux indépendants pour les deux caractères. Des essais de valeur hybride sur différents testeurs complètent les tris en valeur propre. Du matériel tolérant est obtenu dans les différentes sources utilisées. Toutefois, le matériel précoce européen et des sources argentines paraissent plus favorables à l’obtention de lignées tolérantes. Ces programmes ont permis l’obtention d’une soixantaine de lignées à forte aptitude à la combinaison pour le rendement et à bons niveaux de tolérance à la pyrale, avec des gains de précocité et de résistance à la verse. (© Inra/Elsevier, Paris.)

Published
1998

49. Classification des populations françaises de maïs basée sur les caractères morphologiques

Author

Gouesnard, Brigitte, Dallard, J., Boyat, Armand, Unité de recherches de génétique et amélioration des plantes, and Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences
Abstract

International audience; The genetic variability of the whole collection of 262 maize populations originating from metropolitan France was evaluated in two locations for agro-morphological traits. The most important variables in the principal component (PC) axis were related to maturity traits, and ear and grain shapes. On the first plane of the PC analysis, the distribution of populations was continuous, and populations from some particular regions were found grouped together: Pyrenees (early material and conical ears), Alsace (cylindrical ears), Bresse (mostly small kernels), Vallée de la Garonne (late material with long ears or with small kernels). The two distance matrices among populations calculated on the first four PC and on the geographic coordinates were correlated. Based on the first four standardized PC axes, which accounted for 77% of the variability, hierarchical classifications were computed and dendrograms confirmed the magnitude of maturity traits, and ear and kernel shapes in the classification.; L’ensemble des 262 populations originaires de France métropolitaine conservées dans la collection Inra-Promais a été étudié. La variabilité génétique a été évaluée en deux lieux pour les caractères agromorphologiques (précocité, épi, grain, panicule). Les variables déterminant les axes sont, dans l’ordre : la précocité, les formes de l’épi et du grain. Sur le premier plan de l’analyse en composantes principales, la répartition des populations est continue et les populations de quelques régions se regroupent avec des caractéristiques particulières : Pyrénées (matériel précoce à épi conique), Alsace (épi cylindrique), Bresse (petit grain pour la majorité), Vallée de la Garonne (matériel tardif à épi long ou à petit grains). Les matrices de distance entre populations calculées sur les coordonnées des axes de l’analyse en composantes principales et sur les coordonnées géographiques sont corrélées. À partir des quatre premiers axes standardisés de l’analyse en composantes principales représentant 77 % de variabilité, des analyses ascendantes hiérarchiques ont été effectuées. Les dendrogrammes confirment l’importance de ces caractères dans la classification.

Published
1997

50. Isozyme variability in west african maize cultivars (Zea mays L.)

Author

Sanou, J., Gouesnard, Brigitte, Charrier, A., ProdInra, Migration, Station d'amélioration des plantes, and Institut National de la Recherche Agronomique (INRA)

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences, [SDV.SA] Life Sciences [q-bio]/Agricultural sciences, FLUX DE GENE, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
1997

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