Impact of Drought on Productivity and Water Use Efficiency in 29 Genotypes of Populus Deltoides×Populus Nigra. Monclus, R., Dreyer, E., Villar, M., Delmotte, F. M., Delay, D., Petit, J., Barbaroux, C., Le Thiec, D., Bréchet, C., & Brignolas, F. 169(4):765–777. Paper doi abstract bibtex [::] We examined the relationships among productivity, water use efficiency (WUE) and drought tolerance in 29 genotypes of Populus~×~euramericana (Populus deltoides×Populus nigra), and investigated whether some leaf traits could be used as predictors for productivity, WUE and drought tolerance. [::] At Orléans, France, drought was induced on one field plot by withholding water, while a second plot remained irrigated and was used as a control. Recorded variables included stem traits (e.g. biomass) and leaf structural (e.g. leaf area) and functional traits [e.g. intrinsic water use efficiency (Wi) and carbon isotope discrimination (Δ)]. [::] Productivity and Δ displayed large genotypic variability and were not correlated. Δ scaled negatively with Wi and positively with stomatal conductance under moderate drought, suggesting that the diversity for Δ was mainly driven by stomatal conductance. [::] Most of the productive genotypes displayed a low level of drought tolerance (i.e. a large reduction of biomass), while the less productive genotypes presented a large range of drought tolerance. The ability to increase WUE in response to water deficit was necessary but not sufficient to explain the genotypic diversity of drought tolerance.
@article{monclusImpactDroughtProductivity2006,
title = {Impact of Drought on Productivity and Water Use Efficiency in 29 Genotypes of {{Populus}} Deltoides×{{Populus}} Nigra},
author = {Monclus, Romain and Dreyer, Erwin and Villar, Marc and Delmotte, Francis M. and Delay, Didier and Petit, Jean-Michel and Barbaroux, Cécile and Le Thiec, Didier and Bréchet, Claude and Brignolas, Franck},
date = {2006},
journaltitle = {New Phytologist},
volume = {169},
pages = {765--777},
issn = {1469-8137},
doi = {10.1111/j.1469-8137.2005.01630.x},
url = {https://doi.org/10.1111/j.1469-8137.2005.01630.x},
abstract = {[::]\hspace{0.6em}We examined the relationships among productivity, water use efficiency (WUE) and drought tolerance in 29 genotypes of Populus~×~euramericana (Populus deltoides×Populus nigra), and investigated whether some leaf traits could be used as predictors for productivity, WUE and drought tolerance. [::]\hspace{0.6em}At Orléans, France, drought was induced on one field plot by withholding water, while a second plot remained irrigated and was used as a control. Recorded variables included stem traits (e.g. biomass) and leaf structural (e.g. leaf area) and functional traits [e.g. intrinsic water use efficiency (Wi) and carbon isotope discrimination (Δ)]. [::]\hspace{0.6em}Productivity and Δ displayed large genotypic variability and were not correlated. Δ scaled negatively with Wi and positively with stomatal conductance under moderate drought, suggesting that the diversity for Δ was mainly driven by stomatal conductance. [::]\hspace{0.6em}\hspace{0.6em}Most of the productive genotypes displayed a low level of drought tolerance (i.e. a large reduction of biomass), while the less productive genotypes presented a large range of drought tolerance. The ability to increase WUE in response to water deficit was necessary but not sufficient to explain the genotypic diversity of drought tolerance.},
keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13522883,~to-add-doi-URL,carbon-isotope-discrimination,drought-tolerance,genotypic-diversity,hybrid-poplars,leaf-traits,open-field,populus-spp,productivity,water-use-efficiency},
number = {4}
}
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[::] At Orléans, France, drought was induced on one field plot by withholding water, while a second plot remained irrigated and was used as a control. Recorded variables included stem traits (e.g. biomass) and leaf structural (e.g. leaf area) and functional traits [e.g. intrinsic water use efficiency (Wi) and carbon isotope discrimination (Δ)]. [::] Productivity and Δ displayed large genotypic variability and were not correlated. Δ scaled negatively with Wi and positively with stomatal conductance under moderate drought, suggesting that the diversity for Δ was mainly driven by stomatal conductance. [::] Most of the productive genotypes displayed a low level of drought tolerance (i.e. a large reduction of biomass), while the less productive genotypes presented a large range of drought tolerance. 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