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Improvement of cropping systems by integration of rice breeding: A novel genetic improvement strategy

Vales M., Séguy L., Bouzinac S., Taillebois J.E.. 2009. Euphytica, 167 (2) : p. 161-164.

Rice improvement is based to an increasing extent on ever-sharper genetic analysis to the detriment of classical breeding, which is disappearing. Analytical genetics are very promising, but they cannot replace integrated and Wnalized breeding. Little attention has been paid to improving participatory rice breeding methods for subsequent integration into sustainable cropping systems. Special methodological initiatives are required to ensure the success of this breeding-agronomy integration. This integration of inexpensive breeding methods has increased the biodiversity of rice: low temperature and drought tolerant upland rice varieties for mountain areas, and polyvalent varieties, which have the ability to grow in both rainfed or irrigated conditions, they are perfectly adapted to improved cropping systems and to beneWciaries' needs and preferences. These preliminary results on this integration demonstrate that the present approach is relevant. (Résumé d'auteur)

Mots-clés : système de culture; amélioration des plantes; riz pluvial; oryza; brésil

Thématique : Génétique et amélioration des plantes; Systèmes et modes de culture; Méthodes de recherche

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