ĐÁNH GIÁ KHẢ NĂNG CHỊU HẠN CỦA CÁC TỔ HỢP LAI LUÂN PHIÊN TỪ 8 DÒNG NGÔ THUẦN Ở GIAI ĐOẠN CÂY CON VÀ TRONG THÍ NGHIỆM CÓ ĐIỀU KHIỂN TƯỚI

The drought tolerance ability of 28 diallel crosses was researched at Song Boi Maize Research and Seed Production Center on the seedling stage and in controlled irrigation condition. The results showed that: V7 xV3, V5  V2, V6  V5, V6  V3 crosses presented high potential for drought tolerance with good restore when supply water again after drought condition; V5  V2, V8  V4 had high germination percentage and good vigor after treated in PEG 20% concentration; based on Zadok (1974) method identified V5  V2, V6  V2, V7  V4, V8  V4 presented better drought tolerance to other crosses; on the controlled irrigation trial, V5  V2 cross has high yield in both seasons, which produced the yield higher than other in the drought condition.