对滇一型水稻不育系中可育株的育性、出现频率及其对不育系恢复能力的研究结果表明 :滇一型水稻不育系中存在少数可育株 ,依据对不育系恢复能力的不同 ,可育株分为无恢复力和有恢复力两种类型 ,前者来源于保持系混杂 ,后者可能是由于雄性不育系不育基因的回复突变所致 The results showed that fertility and frequency of fertile plants and their ability to restore fertility in Dian-1 type CMS lines indicated that there were a few fertile plants in Dian-type rice CMS lines, In terms of resilience, fertile plants were divided into two types: non-restoring force and restoring force. The former was derived from maintainer lines mixed with the latter due to the back-mutation of male sterility lines