两系杂交粳稻主要性状的配合力分析  

Analysis on Combining Ability of Main Characters in Two-line Japonica Hybrid Rice

作　　者：朱镇[1] 赵凌[1] 宗寿余[1] 张亚东[1] 王才林[1] 

机构地区：[1]江苏省农业科学院粮食作物研究所,江苏南京210014

出　　处：《江西农业学报》2006年第1期11-14,共4页Acta Agriculturae Jiangxi

基　　金：国家"863"项目(2003AA207020);农业结构调整重大技术研究专项(05-01-05B);江苏省高技术研究项目(BG2004304;BG2005301)

摘　　要：以4个粳型光敏核不育系和8个恢复系为亲本,采用p×q不完全双列杂交(NCⅡ)设计对8个主要性状的配合力进行了分析。结果表明:所有测定性状的一般配合力和特殊配合力均达到了显著或极显著水平,所测性状主要受亲本一般配合力的制约,每穗实粒数和单株粒重受组合特殊配合力的影响相对较大;父本一般配合力的作用明显大于母本一般配合力的作用,不育系“S23”和恢复系“选二”、“C418”等亲本多数性状的一般配合力效应和特殊配合力方差较高。Four japonica PGMS lines and 8 restoring lines of two - line japonica hybrid rice were selected as parents to analyze the combining ability of 8 characters by p × q incomplete diallele cross （ NC Ⅱ ） design. The results showed that both general combining ability （GCA） and specific combining ability （SCA） of all the characters were significant at 1% level. The role of GCA was more important than that of SCA for all characters. The role of SCA for filled grains and grain yield per plant was greater than that for other characters, and the role of GCA for restoring lines was greater than that for PGMS lines. PGMS line ＂S23＂ and restoring line ＂Xuan 2＂ and ＂C418＂, showed greater GCA and SCA variance for main characters.

关 键 词：粳型杂交水稻 主要性状 配合力 

分 类 号：S511.032[农业科学—作物学]