Abstract: Gene recombination was conducted in initial stocks of male sterile sesame (Sesamum indicum L.) by population approvement. Many excellent variants appeared in the population. A male sterile line(ms86-1), which have good synthetical agronomic characteristics, 100per cent of sterility and 50 per cent of the frequency of the male sterile plant was bred through successive sibcrossing and back crossing. The male sterile line can be used in hybrid seed production. Studies on morphology proved that the male abortion is complete and the female fertility is normal. The microspore of GMS aborted at the early nonvacuolate microspore stage. The male sterility is very stable in environments. According to the primary hereditary analysis, the sterility may be controlled by two gene allels. The segregating ratio of male sterile plant increased by successive sib-crossing. The hybrid Yuzhi 9(ms86-1 ×Danbackggae) has already been used in production.

Key words: Sesame, Genetic male sterile, Microspore abortion, Male sterility percentage, Percentage of male sterile plant, Heterosis

CLC Number: 

• S565.301