摘要
以9个淀粉含量不同的玉米自交系为亲本,按照GriffingⅠ双列杂交模式组配72个杂交组合,研究玉米籽粒淀粉含量的遗传效应。结果表明,淀粉含量遗传方式以加性效应为主,杂交组合的淀粉含量主要表现为正向杂种优势,并与母本和中亲值呈极显著相关。杂交组合淀粉含量的特殊配合力(SCA)与双亲的一般配合力(GCA)效应之间无相关性,不能简单地依据组合双亲的GCA效应来推断其后代的SCA效应,自交系陕814和Lx00-6的淀粉含量和GCA都较高,可以作为今后高淀粉育种的重要资源。
A set of 9x9 full diallel （Griffingl） crosses were made using nine inbred lines of maize （Zea mays L.） with different starch contents and genetic effects of starch contents in the 72 crosses were studied. The results showed that the heredity of starch content was mainly affected by the additive gene effect. A positive heterosis was observed for starch content of the crosses. The starch contents of crosses were significantly correlated with that of the middle-parent and the female parent. There were no significant relationship between specific combining ability （SCA） effects of the starch contents in hybrids and general combining ability （GCA） of their parents. Specific combining ability effects of offspring could not be simply inferred from general combining ability effects of their parents. Shan814 and Lx00-6 had high starch contents and high GCA, and could be used as breeding resources for breeding high starch content maize in the future.
出处
《东北农业大学学报》
CAS
CSCD
北大核心
2012年第10期115-119,共5页
Journal of Northeast Agricultural University
基金
青岛市农业科技支撑项目(09-1-1-70-nsh)
山东省农业良种工程
山东省农业科技成果转化资金项目
关键词
玉米
淀粉含量
配合力效应
杂种优势
遗传效应
maize
starch content
combining ability effect
heterosis
genetic effect
