Progress in breeding rice for medium deep water rainfed lowland areas in Vietnam
1986
Pham Van Ro | Vu Tuyen Hoang
Medium deep water rainfed lowland areas occupy about one-tenth of the total rice hectarage in Vietnam. Two main constraints of rice production in these areas are uncertain rainfall-both amount and frequency - and temperature differences in the Red River and Mekong River Deltas. Suitable varieties should have the following characteristics: appropriate seedling height at the transplanting and tillering stages, medium to late maturity, and resistance to major pests. To improve yields, scientists have been screening newly introduced promising lines and varieties, and simultaneously selecting segregating materials from their own breeding programs. Several well-adapted varieties have been identified.
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