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通过分期播种试验,对3个野败型新型水稻不育系华川4A、华 J2A、华 S40A 的生育期、叶龄、柱头外露率、开花习性、农艺性状等进行了观察。结果表明:3个不育系在不育期内的育性稳定,可育期内不育系具有较高的结实率;3个不育系的生育期在60～70d 之间,主茎叶片数为13～14片,张颖角度一般在30～40°之间,柱头外露率在39.1%～46.8%之间,花时较为集中,且农艺性状均比较稳定。
Through the sowing experiment, the growth stages, leaf ages, stigma exsertion rates, flowering habits and agronomic traits of three wild type CMS lines, Huachuan 4A, HuaJ2A and Hua40A, were observed. The results showed that the fertility of three CMS lines was stable during the sterile period and the CMS lines had high seed setting rate. The growth period of the three CMS lines was between 60 and 70 days. The number of leaves is 13-14, and the angle of Zhangying is generally between 30 and 40 °. The stigma exsertion rate is between 39.1% and 46.8%. The flowers are more concentrated and the agronomic characters are relatively stable.