Preliminary Discussion on Stigma Vitality of Sterile Line Rong 18A and Its Application in Seed Production  

抗病优质杂交水稻三系不育系蓉18A不育系柱头活力初探（英文）

作　　者：蔡良俊[1] 徐敬洪[1] 沈超[1] 袁亚章[1] 张帆[1] 王富全[1] 杨震[1] 赵永康[1] 李治义[1] 

机构地区：[1]成都市农林科学院作物所,四川温江611130

出　　处：《Agricultural Science & Technology》2016年第8期1820-1822,1920,共4页农业科学与技术（英文版）

基　　金：四川省水稻育种攻关项目;国家现代农业产业技术体系四川创新团队建设项目~~

摘　　要：Rong 18A is an Indica three-line sterile line bred with M5B×D Xing B, and has the characteristics of stable sterility, high outcrossing rate, good combining ability and good quality. With Rong 18A as an experimental material and Ⅱ-32A, Jin 23A and Gang46 A as the CK materials, a seed setting rate estimation method by daily pollination was used for measuring its stigma vigor, to comparatively analyze the decreasing rates and lasting time of stigma vigor of various materials under natural condition. According to experimental results and combining with field breeding practice, the application of stigma vigor of sterile lines on hybrid rice seed production was discussed.蓉18A是我所用M5B×D香B选育的籼型杂交水稻三系不育系,具有不育性稳定、异交结实率高、配合力好、米质较优、抗病性较强等突出特点。以蓉18A为试验材料,以Ⅱ-32A、金23A、冈46A为对照,利用逐日受粉结实率估算法测定其柱头活力,比较分析各参试材料在自然条件下柱头活力衰减状况及维持时间。依据试验结果,并结合田间繁殖制种实践,探讨了不育系柱头活力在杂交水稻制种上的应用。

关 键 词：Hybrid rice Sterile lines Rong 18A Stigma vigor Seed production 

分 类 号：S511[农业科学—作物学]