Bilan du programme d'amélioration en riziculture d'altitude au Burundi (1300-1700 m)

• Main Authors: Tilquin, JP., Detry, JF., Nizigiyimana, A., Boels, C., Ndayiragije, A.
• Format: Article
• Language: English
• Published: Presses Agronomiques de Gembloux 1996-01-01
• Series: Tropicultura
• Subjects: High Altitude Rice Growing; Cold Temperatures; Pseudomonas fuscovaginae; Blast; Natural Selection
• Online Access: http://www.tropicultura.org/text/v14n4/141.pdf
• ISSN: 0771-3312

The Point of a Breeding Programme for High Altitude Rice Growing in Burundi (1, 300-1, 700m). The constraints of the rice growing of altitude between the tropics are specifie : a permanent cold temperature stress, a bacteriose caused by Pseudomonas fuscovaginae and a blast which is epidemie. The two first constraints can be solved by the bulk method with 3 rapid advanced generations al low altitude (800 m) before to be submitted at the natural selection at 1550 m. The efficiency of natural selection is high against low temperature stress and against the bacterial sheath rot induced by the Pseudomonas. Actually the main problem is the pyriculariose. Which strategy to use ? Gene rotation is not practicable in Burundi. Only mixtures of varieties are recommended.