Hoang Kim¹, Tran Ngoc Ngoan², Nguyen Thi Truc Mai⁴, Nguyen Bach Mai⁵, Vo Van Quang³,Nguyen Phuong¹, Hoang Long³, Nguyen Minh Cuong¹, Dao Trọng Tuan¹, Nguyen Thi LeDung¹, Tran Cong Khanh³, Nguyen Minh Hieu², Nguyen Van Bo⁶,  Nguyen Thị Cach⁴, Nguyen Trong Hien⁶, Le Huy Ham⁷, Hernan Ceballos⁸, Manabu Ishitani⁸

1)  Nong Lam University  (NLU); 2) Thai Nguyen University of Agriculture and Forestry (TUAF); 3) Institute of Agricultural Science for Southern Vietnam (IAS); 4) Hue University of Agriculture and Forestry (HUAF); 5) Tay Nguyen University (TNU); 6) Vietnam Academy of Agricultural Sciences (VAAS); 7) Agricutural Genetics Institute (AGI); 8) Centro Internacional de Agricultura Tropical (CIAT)

Summary

The cassava variety KM 419 was developed from the cross combination BKA900 x KM 98-5.  KM 419 has the advantage of short duration  with fresh root yield 34.9 – 54.9  ton/ ha (higher than KM 94 about 27.7- 29.6% ), good root shape with white flesh, high adaptability to various production conditions, starch content 27,8 - 30,7%, starch yield about 10,1 -15,8 ton/ha and root dry matter content about 15,6-21,6 ton/ha for 7-10 months after planting ( KM94 starch content 26,0-28,3 %, starch yield about 6,4- 9,5 ton/ha and root dry matter content about 9,0- 13,2 ton/ha for 9-11 months after planting). KM419 was moderately susceptible to cassava bacterial blight. Production area of KM419 in the Tây Ninh, Dong Nai, Dak Lak, Phu Yen in 2013 was up to more than 50,000 ha. KM419 was proposed by the Nong Lam University in Ho Chi Minh city (NLU) and Thai Nguyen University of Agriculture and Forestry to be main production in the Southeast, Central Highland, North and South Central Coast and Northeast & Northwest of Vietnam.

Key words: Cassava  KM419, high starch yield, cassava breeding, Vietnam.

 

Kết quả chọn tạo và phát triển giống sắn KM419