8 results on '"Kallida, R."'
Search Results
2. Relationship between biomass production and summer dormancy in Dactylis glomerata L
- Author
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Kallida, R., Zhouri, L., Shaimi, N., Al Faiz, C., Volaire, Florence, Julier, Bernadette, Barre, Philippe, Institut national de la recherche agronomique [Maroc] (INRA Maroc), Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Université Paul-Valéry - Montpellier 3 (UPVM)-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 de Recherche pour le Développement (IRD [France-Sud]), Unité de Recherche Pluridisciplinaire Prairies et Plantes Fourragères (P3F), Institut National de la Recherche Agronomique (INRA), and ProdInra, Migration
- Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences ,[SDV.SA] Life Sciences [q-bio]/Agricultural sciences ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2013
3. Dehydration tolerance and drought survival summer dormant Moroccan ecotypes cocksfoot (Dactylis glomerata L.)
- Author
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Kallida, R., Shaimi, Naima, and Volaire, Florence
- Subjects
déshydratation ,écotype ,food and beverages ,tolérance à la sécheresse ,tolérance à la déshydratation ,sénescence foliaire ,évitement ,graminée pérenne ,Agricultural sciences ,maroc ,dactylis glomerata ,dormance estivale ,région méditerranéenne ,Sciences agricoles - Abstract
Summer dormancy in perennial grasses is a major trait conferring plant survival and persistence in Mediterranean areas. The aim of the present study was to characterize the effect of summer dormancy on dehydration tolerance in six Moroccan ecotypes and two cultivars “Kasbah” and “Porto” of Dactylis glomerata in a glasshouse experiment. Measurements included the ratio of green/senescent aerial tissues, soil water evolution, water content in survival organs and plant survival rate. D8 and D9 ecotypes showed high senescence when soil moisture was 5%, while Kasbah (dormant cultivar) was at 52% of areal senescence. Proportion of senescent tissue reached 98% for all ecotypes at soil humidity of 1.9%. Under severe drought, water content of apices decreased to reach 0.31 g H20 g–1 dry weight, which was a lethal value for four tested ecotypes and cv. Porto. Except for Kasbah, D1 and D6, which remained alive with little hydrated apices. The soil moisture associated with 50% of plant mortality was 2.5% for Porto and D8 but decreased to 1.9% for D14. Kasbah, D1 and D6 could survive until 1% soil moisture. These results are ascribed to efficient strategies of both dehydration avoidance and tolerance in the best surviving genotypes., La dormance estivale chez les graminées pérennes est un trait majeur conférant la survie et la persistance dans les régions méditerranéennes. Le but de ce travail est de caractériser la dormance et la tolérance à la déshydratation de six écotypes marocains et de deux cultivars de Dactylis glomerata en conditions contrôlées. La progression de la sénescence foliaire, de la teneur en du sol, l’hydratation des organes de survie et le taux de survie des plantes ont été mesurés. La sénescence a atteint 98 % pour l’ensemble des écotypes à l’humidité de sol de 1,9 %. Sous sécheresse extrême, le contenu d’eau des apex a diminué drastiquement jusqu’à 0,31 g H20 g-1 MS considérée comme létale pour quatre écotypes et Porto, à l’exception de Kasbah, D1 et D6, qui ont maintenu une survie avec des apex faiblement hydratés. L’humidité de sol associée à 50 % de mortalité est 2,5 % pour Porto et D8, mais seulement de 1,9 % pour D14 alors que Kasbah, D1 et D6 ont survécu jusqu’1% d’humidité du sol. Ces résultats sont attribués à une efficace combinaison d’évitement et de tolérance à la déshydratation chez les écotypes les plus résistants.
- Published
- 2012
4. Response of Mediterranean tall fescue cultivars to contrasting agricultural environments and implications for selection
- Author
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Pecetti, Luciano, Annicchiarico, P., Abdelguerfi, A., Kallida, R., Mefti, M., Porqueddu, C., Simoes, N.M., Volaire, Florence, Lelièvre, François, Agricultural Research Council (CRA), École Nationale Supérieure d’Agronomie [Alger] (ENSA), Institut national de la recherche agronomique [Maroc] (INRA Maroc), Université de Msila, Consiglio Nazionale delle Ricerche (CNR), Instituto Nacional de Investigação Agrária e Veterinária = National Institute for Agrarian and Veterinary Research [Oeiras, Portugal] (INIAV), Fonctionnement et conduite des Systèmes de culture Tropicaux et Méditerranéens, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-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), and EU [INCO-2004-509140]
- Subjects
[SDV]Life Sciences [q-bio] ,[SDE]Environmental Sciences - Abstract
International audience; Extensive livestock is a basic socio-economic feature of the Mediterranean region whose environmental and economic sustainability depends on the ability of forage resources to withstand climatically stressful conditions. Perennial forages such as tall fescue can be a valuable alternative to annuals, if they can survive across successive summer droughts. Three-year dry matter yield and plant survival of five cultivars of Mediterranean-type tall fescue were evaluated in six sites of Algeria, France, Italy, Morocco and Portugal, with the following objectives: (i) modelling adaptive responses and targeting cultivars as a function of environmental factors associated with genotype x location interaction; and (ii) defining plant ideotypes, adaptation strategies and opportunities for international co-operation for regional breeding programmes. Site mean yield and winter temperatures were positively correlated, whereas sward persistence was positively correlated to lower site heat and drought stress. Cultivar adaptation was adequately modelled by factorial regression as a function of site spring-summer (April-September) drought stress (long-term potential evapotranspiration minus actual water available) for yield, and annual drought stress for final persistence. Specific-adaptation responses to high- or low-stress environments emerged which were consistent with drought-stress levels of cultivar selection environments. However, the wide-adaptation response of cultivar Flecha suggested that breeding for wide adaptation can be feasible
- Published
- 2011
5. Optimal forage grass germplasm for drought-prone Mediterranean environments
- Author
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Annicchiarico, P., primary, Pecetti, L., additional, Abdelguerfi, A., additional, Bouzerzour, H., additional, Kallida, R., additional, Porqueddu, C., additional, Simões, N.M., additional, and Volaire, F., additional
- Published
- 2013
- Full Text
- View/download PDF
6. Adaptation of contrasting cocksfoot plant types to agricultural environments across the Mediterranean basin
- Author
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Annicchiarico, P., primary, Pecetti, L., additional, Bouzerzour, H., additional, Kallida, R., additional, Khedim, A., additional, Porqueddu, C., additional, Simões, N.M., additional, Volaire, F., additional, and Lelièvre, F., additional
- Published
- 2011
- Full Text
- View/download PDF
7. Evaluation of cocksfoot ( Dactylis glomerata L.) population for drought survival and behavior.
- Author
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Zhouri L, Kallida R, Shaimi N, Barre P, Volaire F, Gaboun F, and Fakiri M
- Abstract
Climate change models predict frequent and intense droughts in the world. Development of drought-tolerant species and cultivars is necessary to cope with such changes. Forage grass species are affected, especially in the Mediterranean region. The aim of the present study was to investigate the diversity for drought survival, summer dormancy, and productivity within a cocksfoot population. The study was conducted in Morocco, under field conditions from 2011 to 2013. 283 genotypes of cocksfoot and parents were tested, characterized for dry matter yield, heading date, plant height, senescence, summer dormancy, and drought survival. Results exhibited a large variability between traits. 79% of the population had survived after severe drought summer while 57% yielded more than both parents. Also, 63% of the progeny had an intermediate score of summer dormancy estimated by senescence score. Large variability was also noticed for heading date and plant height. Several accessions combined a high yield and persistence under severe summer drought. Which explain the significant correlation ( r = 0.18, P < 0.005) founded between total dry matter accumulated in 2013 and plant survival. Accordingly, our results showed that we can rise persistent and resilient genotypes among population with a good level of biomass.
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- 2019
- Full Text
- View/download PDF
8. Combining Drought Survival via Summer Dormancy and Annual Biomass Productivity in Dactylis glomerata L.
- Author
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Kallida R, Zhouri L, Volaire F, Guerin A, Julier B, Shaimi N, Fakiri M, and Barre P
- Abstract
Under Mediterranean climates, the best strategy to produce rain-fed fodder crops is to develop perennial drought resistant varieties. Summer dormancy present in native germplasm has been shown to confer a high level of survival under severe drought. Nevertheless it has also been shown to be negatively correlated with annual biomass productivity. The aim of this study was to analyze the correlations between summer dormancy and annual biomass productivity related traits and to identify quantitative trait loci (QTL) for these traits in a progeny of a summer dormant cocksfoot parent (Kasbah) and a summer active parent (Medly). A total of 283 offspring and the parents were phenotyped for summer dormancy, plant growth rate (PGR) and heading date in Morocco and for maximum leaf elongation rate (LERm) in France. The individuals were genotyped with a total of 325 markers including 59 AFLP, 64 SSR, and 202 DArT markers. The offspring exhibited a large quantitative variation for all measured traits. Summer dormancy showed a negative correlation with both PGR (-0.34 p < 0.005) and LERm (-0.27 p < 0.005). However, genotypes with both a high level of summer dormancy and a high level of PGR were detected in the progeny. One genetic map per parent was built with a total length of 377 and 423 cM for Kasbah and Medly, respectively. Both different and co-localized QTL for summer dormancy and PGR were identified. These results demonstrate that it should be possible to create summer dormant cocksfoot varieties with a high annual biomass productivity.
- Published
- 2016
- Full Text
- View/download PDF
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