利用湖北农科院等单位提供的籼型光敏核不育系６１５４等５份，粳型光敏核不育系５０４７等８份，进行盆栽和大田栽培，Ａ做透光１１、１３、１３．５、１４小时及自然光照处理，结合温度自然分布，使２次枝梗分化至出穗期处于不同的光温组合中，探讨光敏核不育系在沈阳市（４２°Ｎ）的育性转换规律。结果表明，粳型与籼型光敏核不育系其基因表达条件差异很大，前者主要受光照因子控制，后者则受光温配合作用制约且温度尤为主导因素。在沈阳整个８月份为光敏核不育系的不育期，可以杂交制种。 Using Hubei Academy of Agricultural Sciences and other units of indica-type photo-sensitive male sterile line 6154 and other 5 copies of japonica-type photosensitive male sterile line 5047 and other 8, potted and field cultivation, A transparent 11,13,13.5 , 14 hours and natural light treatment, combined with the natural distribution of temperature, the differentiation of the second branch to the heading stage was in different light-temperature combinations, and the fertility transformation of the photoperiod-sensitive male sterile lines in Shenyang city (42 ° N) . The results showed that the gene expression conditions of Japonica and Indica-sensitive genic male sterile lines differed greatly. The former was mainly controlled by the light factor, the latter by the light-temperature combination and the temperature was the dominant factor. During the whole of August in Shenyang, the sterile CMS line can be hybridized.