Hoang Kim (1), Nguyen Phuong, Tran Cong Khanh, Nguyen Trong Hien, Hoang Long, Nguyen Van Bo, Hernan Ceballos, Reinhardt Howeler, Keith Fahrney, Rod Lefroy and Tin Maung Aye.
In 2008, cassava production in Vietnam was about 8.90 million tonnes, up from only 1.99 million tonnes in 2000. This was the result of both area expansion, from 237,600 ha to 556,000 ha, and marked increases in yield, from 8.36 t/ha in 2000 to 16.90 t/ha in 2008. Vietnam has made the fastest progress in application of new technologies in breeding and new varieties propagation in Asia. Such progress has been considered as a result of many factors, of which the success in breeding and application of new technologies were the main contributing factors. Cassava yields and production in several provinces have more than doubled due to the planting of new high-yielding cassava varieties in about 420,000 ha, mainly KM94, KM140, KM98-5, KM98-1, SM937-26, KM98-7 varieties, and the adoption of more sustainable production practices. Since 2001-2007, a total of 24,073 cassava sexual seeds from CIAT and 37,210 seeds from 9-15 cross combinations made in Vietnam, 38 breeding lines (mainly from Thailand), and 31 local farmer's varieties, have been planted. Of these, 98 of the best lines are now in the final stages of the selection process, and one of the most promising, KM140, has recently been released in 2007.
Key words: Cassava breeding and varietal adoption in Vietnam
(1) Paper presented at 8th Regional Cassava Workshop Vientiane, Lao PDR - October 20-24, 2008