Crop mixtures: does niche complementarity hold for belowground resources? An experimental test using rice genotypic pairs

Germain Montazeaud (1, 2) , Cyrille Violle (2) , Hélène Fréville (1) , Delphine Luquet (1) , Nourollah Ahmadi (1) , Brigitte Courtois (1) , Ilyas Bouhaba (2) , Florian Fort (2)

1 UMR AGAP - Amélioration génétique et adaptation des plantes méditerranéennes et tropicales
2 CEFE - Centre d’Ecologie Fonctionnelle et Evolutive

Aims Genotypic mixtures have been receiving a growing interest as genetic diversity could increase crop productivity. Resource-use complementarity is an expected key underlying mechanism, provided that varieties in the mixture differ in resource-related traits, notably root traits. We aimed at examining how trait differences and resource-use complementarity drive biomass production of genotypic mixtures.

Mots clés: functional diversity; near-isogenic lines; resource-use complementarity; selection effect

Mots clés: crop mixture; rice; root traits

Domaines: Biologie végétale; Sciences agricoles

Germain Montazeaud, Cyrille Violle, Hélène Fréville, Delphine Luquet, Nourollah Ahmadi, et al.. Crop mixtures: does niche complementarity hold for belowground resources? An experimental test using rice genotypic pairs. Functional Ecology Conference / Journées d'Ecologie Fonctionnelle AnaEE France, Mar 2017, La Grande Motte, France. ⟨hal-02785122⟩