Studies on F_1 seed production for Chuanyou 15 using genetic 3-lines

The 8702A,a heterogeneous dominant male sterile line,and its derivatives homogeneous male sterile line 38AB and complete sterile line 38AC had similar growth habit,identical development phase and restoration.There were no significant morphological differences on plant type and flowers.The heterogeneous 8702AB and its homogeneous 38AB produced around 50% of plants with male sterility,and complete sterile line 38AC produced 100% of plants with male sterility.The restorer T1082 was combined with 8702AB and 38AC,respectively,and their F_1 hybrids showed no statistically morphological differences for plant type,flowers,fertility percentage,major agronomical characters as well as yield.However,seed yield using 38AC was significantly 76.18% higher than that using 8702AB.