Hernaiz Santiago Ignacio, Alvarado José Roberto, Châtel Marc, Borrero Jaime.
2000. Desarrollo de poblaciones japonica de arroz para Chile.
In : Avances en el mejaromiento poblacional en arroz. Guimaraes Elcio Perpetuo (ed.). EMBRAPA, CIRAD-CA
Autre titre : Développement du riz japonica pour le Chili
Résumé : Sterile plants of the rice gene pool GPIRAT-10, comprising cold-tolerant japonica varieties and lines originally developed in France, Italy, USA, and Chile, were manually crossed with genotypes developed by the Rice Breeding Program of the Instituto de Investigaciones Agropecuarias (INIA), Chile. Population PQUI-1 was developed from GPIRAT-10 (50%), Brillante-INIA (16.22%), Buli-INIA (13.3%), Diamante-INIA (10.3%), CINIA 606 (5.09%), and CINIA 609 (5.09%). Population PQUI-1, characteristically early maturing and cold tolerant, was planted in two ecosystems (Colchagua, 34°38'S and 71°24'W; and Chillan 36°34'S and 72°02'W). Male-sterile plants were selected on the basis of climatic adaptation and other agronomic traits of interest to the Rice Program. As a result, two new populations were developed: PQUI-1/CO/O/ 1 and PQUI-1/CH/0/1. Fertile S. plants were also selected for developing fixed lines. These populations were subjected to two recombination cycles, and population improvement by recurrent selection was initiated to develop cold-tolerant germplasm with the grain quality required by the domestic market.
Mots-clés Agrovoc : Oryza, amélioration des plantes, pool de gènes, tolérance au froid, sélection récurrente, recombinaison
Mots-clés géographiques Agrovoc : Chili
Classification Agris : F30 - Génétique et amélioration des plantes
Auteurs et affiliations
- Hernaiz Santiago Ignacio, INIA (CHL)
- Alvarado José Roberto, INIA (CHL)
- Châtel Marc, CIRAD-CA-CALIM (COL)
- Borrero Jaime, CIAT (COL)
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/476930/)
[ Page générée et mise en cache le 2024-01-28 ]
