玉米Suwan-Lancaster和Tuxpeno-Reid改良系的产量及相关性状配合力分析  

Combining Ability of Suwan-Lancaster and Tuxpeno-Reid Improved Maize Inbreds for Grain Yield and Its Components

作　　者：郭向阳 邬成 陈泽辉 祝云芳 王安贵 陈建军[3] 刘鹏飞[3] 

机构地区：[1]贵州省旱粮研究所,贵州贵阳550006 [2]湖南省长沙县江北镇农业综合服务中心,湖南长沙410136 [3]贵州大学农学院,贵州贵阳550025

出　　处：《西南农业学报》2016年第12期2796-2799,共4页Southwest China Journal of Agricultural Sciences

基　　金：贵州省科技厅农业攻关项目"优良热带玉米Suwan群体遗传潜势及种质改良创新研究"[黔科合NZ(2013)3004];贵州省农业科学院自主创新专项"贵州玉米育种核心种质的改良与创制"[黔农科院自主创新科研专项字(2014)006]

摘　　要：为改良玉米Suwan和Tuxpeno种质,并为早代测配选择提供理论依据;采用NCⅡ遗传交配设计和部分平衡格子方设计法,以Suwan-Lancaster、Tuxpeno-Reid改良系及测验种等14份玉米自交系为供试材料,组配成49个杂交组合,通过田间组合鉴定研究玉米自交系产量与穗长、百粒重等9个农艺性状的配合力。结果表明:Suwan-Lancaster和Tuxpeno-Reid改良系产量一般配合力较高,两大类群改良系间产量特殊配合力较大,相互杂交能够产生较强的杂种优势;两改良系各性状的加性方差均大于非加性方差,占总体基因型方差比例均大于60%。In order to improve the germplasms of Suwan and Tuxpeno, the North Carolina Ⅱ design was adopted to cross 49 varieties with Suwan-Lancaster, Tuxpeno-Reid improved lines and testers. Partially Balanced Lattice Design was employed in the field experiment which evaluated 49 test crosses. The combining and hereditary parameters of improved liens for agronomic characters were analyzed. The results showed that the improved lines have higher general combining ability. There are higher specific combining between those lines and heterosis. The variance of additive effect was higher than that of non-additive effect, the ratio of additive variance to genetic variance all reached 60 %.

关 键 词：玉米 Suwan—Lancaster Tuxpeno.Reid 改良系 配合力 

分 类 号：S513.03[农业科学—作物学]