A male sterile mutant named 39I3-2 was selected from the M3 generation of Nongda 108 (a maize variety) which dry seeds were irradiated with 30Gy ^7 Li, and combinations between male sterile plants and other fertile plants were also obtained through bagging cross. The characteristics of the male sterile mutant and its fertilities of combinations were studied, and the fertilities of the F2 generation were surveyed. The results showed that the sterile material was thoroughly abortive, and the sterile trail was stable, which indicated a genetic f...