CIAT cassava germplasm and its role in cassava varietal improvement in Asia.
1992
Kawano K.
The CIAT Cassava Breeding Program was established in 1973 with the major objective of supplying advanced breeding materials based on world-wide germplasm variability to national breeding programs in the world. During the first ten years of activity, significant upgrading of the breeding population took place with respect to harvest index, resistances to major diseases and pests and tolerance to acid soils. However, this was not necessarily accompanied by simultaneous improvement in total biological yield, root dry matter content, plant type, adaptation to seasonally dry lowland climate, low root cyanide content, and eating quality during the same period. While efforts to further improve in these areas continue at headquarters in CIAT/Colombia, the Thai-CIAT breeding program, established in 1983 as a cooperation among the Department of Agriculture, Kasetsart University and CIAT, with the dual functions of varietal development for Thailand and generating breeding materials for other Asian programs, concentrates on improvement of these traits based on crosses between local cultivars and CIAT parents. Significant progress has been made without losing the improvement previously obtained in CIAT/Colombia or the adaptation of local cultivars to the seasonally dry climate. The resulting materials appear highly promising in the hot, dry, lowland tropics of Thailand and south Vietnam as well as in the wet, lowland tropics of Indonesia. A systematic transfer of elite clones and selected hybrid seeds from the Thai-CIAT program to many cassava breeding programs in Asia was initiated.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
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