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Productivity, water-use efficiency and tolerance to moderate water deficit correlate in 33 poplar genotypes from a Populus deltoides / Populus trichocarpa F1 progeny
- Source :
- Tree Physiology, Tree Physiology, Oxford University Press (OUP): Policy B-Oxford Open Option B, 2009, 29, pp.1329-1339, 21173, 2009, 29, pp.1329-1339, Tree Physiology (Oxford Academic) 11 (29), 1329-1339. (2009), Tree Physiology, Oxford University Press (OUP): Policy B-Oxford Open Option B, 2009, 29 (11), pp.1329-1339. ⟨10.1093/treephys/tpp075⟩
- Publication Year :
- 2009
- Publisher :
- HAL CCSD, 2009.
-
Abstract
- International audience; Genotypic variability for productivity, wateruse efficiency and leaf traits in 33 genotypes selected from an F1 progeny of Populus deltoides Bartr. ex Marsh • Populus trichocarpa L. was explored under optimal and moderate water-deficit conditions. Saplings of the 33 genotypes were grown in a two-plot open field at INRA Orle´ ans (France) and coppiced every year. A moderate water deficit was induced during two successive years on one plot by withholding irrigation, while the second one remained irrigated (control). Stem biomass and leaf structure (e.g., specific leaf area and leaf area) were measured in 2004 and 2005 and functional leaf traits (e.g., carbon isotope discrimination, D) were measured only in 2004. Tolerance to water deficit was estimated at genotype level as the ability to limit losses in biomass production in water deficit versus control trees. Stem biomass, leaf structure and D displayed a significant genotypic variability whatever the irrigation regime. For all traits, genotype ranks remained stable across years for similar irrigation conditions. Carbon isotope discrimination scaled negatively with productivity and leaf nitrogen content in controls. The most productive genotypes were the least tolerant to moderate water deficit. No relationship was evidenced between D and the level of tolerance to water deficit. The relationships between traits evidenced in this collection of P. deltoides • P. trichocarpa F1 genotypes contrast with the ones that were previously detected in a collection of P. deltoides • Populus nigra L. cultivars tested in the same field trial.
- Subjects :
- 0106 biological sciences
Populus trichocarpa
arbre forestier
Physiology
croissance végétale
LEAF TRAIT
Plant Science
discrimination isotopique du carbone
01 natural sciences
Coppicing
DROUGHT TOLERANCE
HYBRID POPLAR
[SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry
Cultivar
CARBON ISOTOPE DISCRIMINATION
BROAD-SENSE HERITABILITY
0303 health sciences
biology
populus euramericana
food and beverages
CARACTERISTIQUE DE LA FEUILLE
EFFICIENCE D'UTILISATION DE L'EAU
Horticulture
Populus
OPEN FIELD
Woody plant
feuille
Irrigation
Genotype
Specific leaf area
Drought tolerance
AND LEAF TRAITS
PEUPLIER EURAMERICAIN
03 medical and health sciences
productivité
HYBRID POPLARS
Stress, Physiological
eau
Botany
biomasse
Water-use efficiency
isotope
GENOTYPIC VARIABILITY
030304 developmental biology
fungi
Genetic Variation
Water
biology.organism_classification
BROAD-SENSE HERITABILITY CARBON ISOTOPE DISCRIMINATION
hybride
Plant Leaves
Hybridization, Genetic
clonage
PEUPLIER NOIR
carbone
populus nigra
010606 plant biology & botany
Subjects
Details
- Language :
- English
- ISSN :
- 0829318X and 17584469
- Database :
- OpenAIRE
- Journal :
- Tree Physiology, Tree Physiology, Oxford University Press (OUP): Policy B-Oxford Open Option B, 2009, 29, pp.1329-1339, 21173, 2009, 29, pp.1329-1339, Tree Physiology (Oxford Academic) 11 (29), 1329-1339. (2009), Tree Physiology, Oxford University Press (OUP): Policy B-Oxford Open Option B, 2009, 29 (11), pp.1329-1339. ⟨10.1093/treephys/tpp075⟩
- Accession number :
- edsair.doi.dedup.....addd2487e6176a00abd6a570ee09433e