Genetic Expression of Rice Male Sterility in the Allocytoplasmic Background

By using F 1 generation of the natural male sterile Jinzao 6/normal fertile Jinzao 6 as male parent, and the same nucleus alien cytoplasmic line developed by hybridization and numerous backcrosses of nine rice germplasms /Zhenshan 97 as female parent, the genetic expression of male sterility was observed. The nine alien cytoplasms included O.barthii,O.glaberrima, Indian T141, African cultivated rice Gambiaka Kokum, Chinese indica rice Zhenshan 97, Indonesian javanica rice Boak and Gannal, Chinese japonica rice Huakenuo and Japanese japonica rice Nanjing 56.Results from F 2 generation showed that male sterility of Jinzao 6 segregated and male sterile plants were obtained under all the backgrounds of the nine alien cytoplasms, and no fertile cytoplasmic type caused by interactive inheritance with the male sterile gene of Jinzao 6 was found.