摘要
采用三倍体胚乳遗传模型，对一组５×４不完全双列杂交设计及其衍生世代的粒长、粒宽、粒厚和粒重４个籽粒性状进行了遗传分析。结果表明，多数性状同时受胚乳、母体和细胞质３套不同遗传体系的控制，且以母体遗传效应的控制为主；母体杂合显性效应对粒长、粒宽和粒重有较强的增值作用，母体杂种优势的利用是提高其基因型值得有效方法；现有的亲本中，多数细胞质效应与母体效应的作用方向相反，核质重组在遗传改良上有一定的应用潜力。
Based on a genetic model for triploid endosperm trait,a genetic analysis was performed for four kernel traits,kernel length,kernel width,kernel thickness,and grain weight,from a set of 54 incomplete diallel design and their derivative generationsResults showed that most of kernel traits under study were controlled by endospermic genetic effects,maternal genetic effects as well as cytoplasmic genetic effect,and maternal effects were principal;that maternal heterozygous dominant effect could largely increase kernel length,kernel width,and grain weight,and utilization of maternal heterosis was an effective way of improving these traits;that directions of maternal effects and cytoplasmic effect were opposite,and there was a potential application in breeding by the recombination between nuclear genes and cytoplasmic genes
出处
《浙江农业科学》
北大核心
1999年第4期171-174,共4页
Journal of Zhejiang Agricultural Sciences
基金
跨世纪优秀人才专项基金
关键词
玉米
籽粒性状
三倍体
胚乳遗传模型
遗传效应
kernel traits in maize
genetic model for triploid endosperm trait
endospermic genetic effects
maternal genetic effects
cytoplasmic genetic effect
