粳稻光温敏感雄性核不育系育性研究  

Fertility Study on P(T) GMS Lines in Japonica Rice

作　　者：严志衡 顾韵莉 胡晓颖[1] 姚振福 顾庆华[1] 

机构地区：[1]上海市浦东新区农业技术推广中心,上海201201

出　　处：《上海农业学报》2005年第2期37-39,共3页Acta Agriculturae Shanghai

基　　金：上海市浦东新区农发资金资助

摘　　要：以粳型光温敏感雄性核不育系农垦58S转育的粳型光温敏感核不育系为试验材料,经人工气候箱不同光温反应测试证明:适应上海地区粳稻光敏感核不育系的育性转换临界光周期为日照长度13.5h,临界日平均温度为23.0℃。在自然环境下,通过观察不同时期抽穗扬花后不同不育系的结实率,提出了适合上海地区粳型不育系育性转换期与在本地制、繁种的时间与方法。The fertility performance of a new P(T) GMS line bred from japonica P(T) GMS Nongken 58S was tested in its responses to different photoperiod and temperature under phytotron. The results showed that in Shanghai area the critical photoperiod for inducing the fertility change was 13.5h length of day and the critical daily mean temperature is 20.3℃. Based on the investigation of the seed-setting of several GMS lines with different heading and flowering dates under the natural condition in Shanghai, the fertility change period of japonica rice GMS lines fitting in with Shanghai area and the seeding date and method of seed reproduction and hybrid seed production were put forward.

关 键 词：粳稻 光温敏感核不育系 育性转换 繁种 制种 上海 

分 类 号：S511.22[农业科学—作物学]