Screening wheat for Bipolaris sorokiniana resistance in Vietnam
1998
Minh, T.D. | Long, T.D. | Ngu, T.T. (Vietnam Agricultural Science Institute (VASI), Van Dien, Thanh tri, Hanoi (Vietnam))
Spot blotch, caused by Bipolaris sorokiniana (Helminthosporium sativa syn. Cochliobolus sativus), is one of the most important diseases of wheat in northern Vietnam, particularly in the Red River Plains (lowlands). In 1987 and 1988, early maturing and spot blotch resistant wheat lines (Long 83- 3393, Yiu 83N-6148, Yiu83-5069, and Vee/Buc) were selected from CIMMYT, Thailand, sources. New sources were received from CIMMYT, Mexico. Of 1751 lines introduced between 1991-1995,198 were selected for spot blotch resistance. Lines showing the best resistance and good agronomic type were: Chyria-1, Chyria-3, SHA3//BUC/ FLK, Yang Mai 6, Mayoor, and Chyria-1. They produced yields of up to 5 t ha-1. Most are mid- maturing lines with moderate susceptibility to powdery mildew.
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