一、选育经过与结果玉米属只有玉米一个独种,利用远缘杂交选育不育系难以奏效.目前,国外主要利用自然变异选育玉米不育系.我国内蒙古农牧研究所曾用辐射引变方法育成了比较稳定的双26不育系.七十年代初开始,我们曾用不同地理来源的自交系杂交,恢复系与不育系杂交,恢复系与恢复系杂交等方法来选育不育系,均未见成效. First, the breeding and the results of maize is only a single species of corn, the use of distant hybridization breeding sterile CMS is currently difficult to use natural variation of male sterile lines in Inner Mongolia, In the early 1970s, we used methods of hybridization between inbred lines of different geographic origins, hybridization of restorer lines and sterile lines, and hybridization between restorer lines and restorer lines Male sterile line, no results were seen.