中国油料作物学报2018，Vol.40Issue(1)：10-17,8.DOI:10.7505/j.issn.1007-9084.2018.01.002
甘蓝型油菜茎秆强度性状的主基因+多基因遗传分析
Genetics of stem strength in Brassica napus in mixed model of major gene and polygene
摘要
Abstract
To understand the genetic control of stem strength in Brassica napus,the'major gene and polygene mixed genetic model'was used to analyze the stem strength trait of 6 generations(P1,P2,F1,B1: 2,B2: 2and F2: 3) in both MB and ZB hybrid combinations. Results indicated that stem strength genetic was fitted in MX2-ADI-ADI model,i.e.,'2 pairs of additive-dominant-epistatic major gene plus additive-dominant-epistatic poly-gene'model. Stem strength was mainly controlled by 2 major genes and the average heritability of major gene were 19.46% and 69.93% in MB and ZB combinations respectively. The additive effects and dominant effects of the 2 major genes were in opposite direction in MB combination,but in same direction in ZB combination. Moreover, multiple epistatic effects influenced the 2 major genes. Proportion of environmental variance to phenotypic variance in these 2 combinations were 54.68% and 13.23% respectively,meaning that environment factors had strong im-pact on stem strength in rapeseed.关键词
甘蓝型油菜/抗倒伏/茎秆强度/主基因+多基因/遗传分析Key words
Brassica napus L./lodging resistance/stem strength/major gene plus polygene model/genetic a-nalysis分类
农业科技引用本文复制引用
李洪戈,张丽萍,伍晓明..甘蓝型油菜茎秆强度性状的主基因+多基因遗传分析[J].中国油料作物学报,2018,40(1):10-17,8.基金项目
国家重点研发计划(2016YFD0100200) （2016YFD0100200）
