大粒突变体浙恢7954-BG3的表型、遗传及配组特性  

The Phenotypic Traits,Genetic and Combination Characteristics of A Big Grain Mutant Zhenhui7954-Bg3

作　　者：孙出[1] 童川[1] 李梅[1] 施聪 徐林峰 沈圣泉[1] 

机构地区：[1]浙江大学原子核农业科学研究所,浙江杭州310029 [2]浙江勿忘农种业,浙江杭州310005

出　　处：《核农学报》2013年第5期557-561,共5页Journal of Nuclear Agricultural Sciences

基　　金：浙江省"8812"计划专项(2011C12020-3);农业部公益性行业(农业)科技专项(2011030007);浙江省公益性技术应用研究农业项目(2011C22028)

摘　　要：用350Gy60Coγ射线辐照浙恢7954干种子,在诱变后代中筛选到大粒型突变体浙恢7954-BG3。研究表明,浙恢7954-BG3的谷粒明显变大,粒重显著增加,其它主要农艺性状和稻米品质性状均与原浙恢7954较为相似;遗传分析表明,浙恢7954-BG3的大粒突变性状受显性单基因控制;与3份骨干不育系所配组合的特征特性及其大区多点产量鉴定结果表明,浙恢7954-BG3既保持了原浙恢7954的高配合力,同时通过增加粒重而显著提高杂交稻产量。A big grain mutant, Zhehui7954-BG3, was isolated from Zhehui7954 which is a restorer line of three- line hybrid rice irradiated by 350Gy^60Coγ-ray. It was investigated that Zhehui7954-BG3 had a bigger grain and heavier grain weight than Zhehui7954, but all other agronomic and quality traits were similar to the Zhehui7954. Genetic analysis indicated that the big grain trait was controlled by a dominant single gene. The characters and multiple regional test of yield of the hybrid rice derived from three elite sterility lines and Zhehui7954-BG indicated that Zhehui7954-BG3 maintained the high combination ability as Zhehui7954, and improved the yield of hybrid rice by increasing the grain weight.

关 键 词：杂交水稻 诱变育种 大粒突变体 浙恢7954-BG3 

分 类 号：S511[农业科学—作物学]