7个籼型水稻细胞质雄性不育系异交习性的研究  

Studies on outcrossing habits of Indica cytoplasmic male sterile lines

作　　者：韩赞平[1] 汪旭东[1] 王彬[1] 牟春红[1] 吴先军[1] 

机构地区：[1]四川农业大学水稻研究所,四川温江611130

出　　处：《西南农业学报》2004年第4期413-417,共5页Southwest China Journal of Agricultural Sciences

基　　金：四川省育种攻关重点项目

摘　　要：以D型细胞质雄性不育系D62A、D63A、D64A、D23A,冈型细胞质雄性不育系G46A,和野败型细胞质雄性不育系珍汕97A、金23A等7个籼型细胞质雄性不育系为材料,视珍汕97A为对照,在海南对它们的异交性能进行了比较研究。结果表明:7个细胞质雄性不育系的颖花开花率从高到低依次为D23A、D63A、D62A、D64A、珍汕97A、金23A、G46A;D62A等6个细胞质雄性不育系的柱头外露率均高于对照珍汕97A;除G46A、金23A外,其余4个的午前花率均比对照珍汕97A高;D62A、D63A、D64A等3个细胞质雄性不育系的平均张颖时间均比对照珍汕97A长,其余三个短于珍汕97A。柱头活力的强弱顺序依次是:对照珍汕97A、D62A、金23A、D63A、D64A、G46A、D23A。异交结实率从高到低的顺序是D62A、D63A、D23A、金23A、D64A、G46A、珍汕97A。Outcrossing habits of 7 Indica cytoplasmic male sterile lines(CMS)(D62A,D63A,D64A,D23A,G46A,Jin23A,Zhenshan97A)were studied.Results showed:the spikelet flowering rate order of 7 CMS in the sequence of decending was:D23A,D63A,D62A,D64A,Zhenshan97A(CK),Jin23A,G46A.The stigma exsertion of 6 CMS were higher than that of Zhenshan97A.With the exception of G46A and Jin23A,percentage of spikelet flowering before noon of 4 CMS(D62A,D63A,D64A,D23A)were higher than that of Zhenshan97A.The average spikelet flowering time of 3 CMS(D23A,G46A,Jin23A)was shorter than that of Zhenshan97A.The stigma vigour order of 7 CMS in the sequence of decending was:Zhenshan97A,D62A,Jin23A,D63A,D64A,G46A,D23A.The seed-setting order by outcrossing of them in the sequence of decending was:D62A,D63A,D23A,Jin23A,D64A,G46A,Zhenshan97A.

关 键 词：籼型 水稻 细胞质雄性不育系 开花习性 异交结实率 柱头活力 

分 类 号：S511.210.3[农业科学—作物学]