STUDIES ON PHOTO-THERMO-SENSITIVE MALE GENIC STERILE WHEAT AND ITS HYBRID

was an ecological-genetical male sterile wheat,and 924030-1×Fuben3 was one of its hybrids.Fertility alteration traits,agronomic characteristics and crossing-pollination biological traits of 924030-1,performances of the hybrid,and hybrid seed production techniques were reported.924030-1 showed male sterile under short-daylight and low-temperature conditions,while male fertile under long-daylight and high-temperature conditions.It was a semi-winter variety which possessed ideal plant height and plant-leaf type,and good multi-resistances. 924030-1 also showed an ideal cross-pollination biological traits under sterility conditions, which mainly supported by the long flowering span,large open angle between pelea and lemma(maximized at 30 0),and long stigma lifespan(over 10 days).A high yield of 0.243 7 kg/m 2 was achieved in the hybrid seed production assay.The F1 of 924030-1×Fuben3 showed a high yield of 0.3881 kg/m 2 which was 14.05% higher than that of the control Xiangmai 13 (reached the 1% differential level).The hybrid also showed a satisfactory multi-resistances.