Different avenues for progress apply to drought tolerance, water use efficiency and yield in dry areas - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
Journal Articles Current Opinion in Biotechnology Year : 2022

Different avenues for progress apply to drought tolerance, water use efficiency and yield in dry areas

Abstract

Drought tolerance, water use efficiency (WUE) and yield in dry areas are often considered as synonyms. However, they correspond to markedly different suites of physiological mechanisms, based on combinations of alleles constrained by evolution into consistent strategies. Improving (i) drought tolerance, sensu stricto, involves extreme conservative strategy with protection and repair mechanisms; (ii) WUE most often results in small plants but avenues exist with lower penalties for growth, that is, by reducing night transpiration; (iii) yield for drought prone areas involves both constititutive traits (e.g. phenology or plant architecture), favourable for most environmental scenarios, and adaptive physiological traits whose effects suited to a given scenario. Genetic improvement of the latter would requires identification of scenario-dependent combinations of alleles, involving phenomics, modelling and genomic prediction.
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hal-03342431 , version 1 (22-08-2023)

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Francois Tardieu. Different avenues for progress apply to drought tolerance, water use efficiency and yield in dry areas. Current Opinion in Biotechnology, 2022, 73, pp.128-134. ⟨10.1016/j.copbio.2021.07.019⟩. ⟨hal-03342431⟩
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