45A is a glutinous sorghum male sterile line with high starch and high combining ability bred by Rice and Sorghum Institute of Sichuan Academy of Agricultural Sciences in 1998, it is a coeno-species taking non-glutinous maintainer line TL169-239B which bred by Tieling Institute of Agricultural Sciences in 1991 as the female parent and glutinous maintainer line72B bred by the authors＇ institute as the male parent, then, based on the backcross breeding between glutinous single plant chosen from F2 segregation population and Tx623A. There are ten hybrid sorghum varieties which already have been examined and approved by national and above provincial（municipal） level units; the patent of this breeding method has been authorized （the patent number： ZL 2012 1 0129155.6）; 45A is protected by the Right of New Varieties of Plants, MOA, P.R. China （the variety right number： CNA20090576.1）. In this paper, the breeding process of 45A and the characteristics of 45A sterile line and its hybrid sorghum were summed up, what＇s more, the technical key points of high-yielding breed of 45A and the production of hybrid sorghum seeds were introduced, to provide data for further popularizing the sterile line.
