优质籼型不育系D702A的选育与应用  

Breeding of Fine Quality Indica CMS Line D702A and Its Application

作　　者：马玉清[1] 李仕贵[1] 黎汉云[1] 王玉平[1] 高克铭[1] 

机构地区：[1]四川农业大学水稻研究所,四川温江611130

出　　处：《杂交水稻》2002年第2期1-2,共2页Hybrid Rice

基　　金：四川省水稻育种攻关项目

摘　　要：D70 2A是用优ⅠB与D2 97B杂交后以D2 97A为母本回交转育而成的不育系 ,具有米质优、花时集中、柱头外露率高、配合力强、繁殖制种产量高等特点。其所配组合具有优质、高产的特点 ,其中D优多系 1号已于2 0 0 0年通过四川省农作物品种审定 ,D70 2A/蜀恢 5 2 7于 2 0 0 1年分别通过四川省和全国审定 ,正在大面积生产上推广应用。D702A is a new indica CMS line with fine grain quality. Its maintainer line is derived from the cross of You ⅠB and D297B. D702A was characteristic of fine grain quality, centralized anthesis time, high stigma exsertion rate, good combining ability and high seed production yield. The F 1 hybrids of D702A showed fine grain quality and high yielding ability. Among them, D You Duoxi 1 was certified in Sichuan in 2000; D702A/Shuhui 527 was certified in Sichuan and nationwide in 2001, respectively.

关 键 词：籼型不育系 D702A 选育 水稻 特征特性 

分 类 号：S511.21[农业科学—作物学]