自杂交稻大面积推广以后,国内一些科研育种单位就尝试应用常规稻育种方法,从杂交稻F1的后代F2群体中选择正常结实的优良单株,在F3及以后的各个世代里,继续鉴定选择,直到获得稳定不分离的新品系。由于这些新品系都继承了母本不育系的不育细胞质和父本细胞核中的恢复基因,本身育性正常,而且具有对雄性不育系的恢复能力,因而被俗称为同质恢复系。但当时 Since the popularization of hybrid rice, some domestic research and breeding units try to use conventional rice breeding methods to select good and normal fine plants from the F1 progenies of hybrid rice F1. In F3 and later generations, continue to identify selection Until a stable new line is obtained without separation. Because these new lines inherit the sterile cytoplasm of male sterile lines and restorer genes in the paternal nucleus, they are fertile and have the ability to restore male sterility lines. Therefore, they are commonly called homologous restorer lines. But at the time