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La7001S是安徽省农科院水稻研究所用HPGMR农垦58经一次杂交多代选育而成的粳型光敏核不育系。1988年田间调查1102株,不育株率100％,不育度99.7％,农艺性状整齐。为探明该不育系在合肥地区的育性转换及繁殖制种适宜播期,于1987、1988年作了两年分期播种试验,生育期间记载穗期,以花粉败育率、套袋结实率及自然结实率为指标进行育性鉴定,同时与湖北粳型光敏核不育系NS5047和NS5088进行了育性转换期比较,获初步结果。
La7001S is a japonica-type photoperiod-sensitive male sterile line derived from HPGMR Nongken 58 at one cross in the Institute of Rice Research, Anhui Academy of Agricultural Sciences. In 1988, there were 1,102 field surveys, the rate of sterile plants was 100%, the fertility was 99.7%, and the agronomic traits were neat. In order to find out the fertile transformation of this CMS line in Hefei and its suitable seeding date, two-year sowing experiment was conducted in 1987 and 1988, and the ear stage was recorded during the birth. The pollen abortion rate, bagging and fruiting Rate and natural seed rate as fertility identification index, at the same time with Hubei japonica photo-sensitive genic male sterile line NS5047 and NS5088 fertility conversion period, preliminary results were obtained.