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La diversité génétique pour l’adaptation des prairies au changement climatique

Abstract : Climate change is leading to more intense and more frequent water stress. Since existing forage varieties tend to do best under favourable conditions, new forage varieties are needed. A better understanding of a) the natural diversity of forage species within their distribution ranges and b) the genetics underlying different adaptation strategies could facilitate the creation of a range of varieties that combine sufficient yield with different levels of water stress resistance (growth maintenance) or tolerance (arrested growth and survival). It appears especially important to select for phenological traits (and therefore seasonal growth rates) that better correspond to climatic constraints. In an increasingly changing environment, species mixtures often allow for greater production stability. The attributes of the varieties in the mixture play an essential role in maintaining the balance among species. That said, it is still early days for methods that improve plant varieties with a view to increasing blend performance while maintaining species balance.
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https://hal.inrae.fr/hal-03274073
Contributor : Dominique Fournier <>
Submitted on : Tuesday, June 29, 2021 - 5:09:29 PM
Last modification on : Tuesday, August 3, 2021 - 1:52:03 PM

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Philippe Barre, Romain Barillot, Thierry Bourgoin, Didier Combes, Jean-Louis Durand, et al.. La diversité génétique pour l’adaptation des prairies au changement climatique. Fourrages, Association Française pour la Production Fourragère, 2020, 244, pp.47-53. ⟨hal-03274073⟩

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