Publications des agents du Cirad


Food security through translational biology between wheat and rice

Valluru R., Reynolds M.P., Lafarge T.. 2015. Food and Energy Security, 4 (8) : p. 203-218.

Wheat and rice are the most important food crops in agriculture providing around 50% of all calories consumed in the human diet. While both are C3 species, the evolution and domestication of wheat and rice occurred in very different environments, resulting in diverse anatomical and metabolic adaptation. This review focuses on the current understanding of their adaptation in an agronomic context. The similarities and differences between wheat and rice are discussed, focusing on traits related to phenology, photosynthesis, assimilate partitioning, and lodging resistance, these being the main abiotic drivers of yield expression in most agro-ecosystems. Currently, there are significant knowledge gaps in the major biological processes that account not only for differential adaption among cultivars within each species, but even between the two species. By addressing what is known as well as where gaps exist in a comparative context, this review aims to highlight translational research approaches that could provide insights into the genetic improvement of both crops. (Résumé d'auteur)

Mots-clés : amélioration des plantes; photosynthèse; phénologie; recherche; méthodologie; sécurité alimentaire; biologie; physiologie végétale; rendement des cultures; facteur du milieu; adaptation physiologique; adaptation; blé; riz; triticum; oryza sativa

Thématique : Physiologie et biochimie végétales; Méthodes de recherche; Génétique et amélioration des plantes

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