水稻光温敏核不育系761S的选育与应用  

Breeding and Application of PTGMS Line 761S in Rice

作　　者：向太双 丁天宇 尹建英 郭国强 肖建平[1] XIANG Taishuang;DING Tianyu;YIN Jianying;GUO Guoqiang;XIAO Jjianping(Huaihua Vocational&Technical College,Huaihua,Hunan 418000,China;Hubei Gushen Technology Co.,Ltd.,Wuhan,Hubei 430070,China;Hengyang Academy of Agricultural Sciences,Hengyang,Hunan 421101,China)

机构地区：[1]怀化职业技术学院,湖南怀化418000 [2]湖北谷神科技有限责任公司,湖北武汉430070 [3]衡阳市农业科学院,湖南衡阳421101

出　　处：《杂交水稻》2024年第4期47-50,共4页Hybrid Rice

基　　金：2022年度湖北省现代种业“揭榜挂帅”项目;2021年湖南省教育厅科学研究项目青年项目(21B0916);2021年怀化职业技术学院科技创新一般资助课题(KJ202106)。

摘　　要：761S是用Y58S作母本、陆两优996作父本进行杂交,后代不育材料利用人工低温冷灌和海南自然低温对育性进行筛选,经4 a 8代的定向选择培育而成的光温敏核不育系。该不育系具有农艺性状优良、不育起点温度低、柱头外露率高、异交性好、繁殖产量高及米质优等特性。2023年8月761S及所配组合谷两优99(761S/R2099)均通过湖北省农作物品种审定委员会审定。761S,derived from the cross of Y58S(as female parent)and Luliangyou 996(as male parent),is a photoperiod-thermo-sensitive genic male sterile(PTGMS)line in rice developed by directional selection in male sterility under the natural low temperature conditions in Hainan or with the treatments of artificial low temperature water irrigation over eight generations of four years.It is characteristic of desirable agronomic characters,low critical sterility-inducing temperature,high outcrossing rate,high seed yield in multiplication,and fine grain quality.In August 2023,761S and its hybrid combination Guliangyou 99(761S/R2099)were both approved by Hubei Crop Variety Appraisal Committee.

关 键 词：杂交水稻 光温敏核不育系 761S 选育 

分 类 号：S511.01[农业科学—作物学] S334