1973年湖北省沔阳沙湖原种场技术员石明松从“农垦58”水稻品种中发现一个粳型不育株。一些单位经过多年试验研究后认为,其不育性受控于一对隐性基因,与细胞质无关。该隐性基因的表达受日照长度影响,日照长于13小时表现雄性不育,日照短于13小时则表现正常可育。对日照长度的敏感期是雌雄蕊形成到花粉母细胞减数分裂期。在武汉 In 1973, Shi Ming-song, a technician at Shahu original plant in Shenyang, Hubei province, discovered a japonica sterile plant from “Nongken 58” rice varieties. After years of experimental research, some units think that their sterility is controlled by a pair of recessive genes, which has nothing to do with the cytoplasm. The recessive gene expression is affected by the length of the sunshine, showing male sterility when the sunshine is longer than 13 hours and normal and fertile when the sunshine is shorter than 13 hours. Sensitive to the length of the sunshine period is the formation of pollen mother cells to the meiosis meiosis. In Wuhan