青花菜花球‘荚叶’性状主基因+多基因遗传分析  

Genetic Analysis of Head-leaf Traits Using Mixed Major Gene Plus Polygene Inheritance Model in Brassica oleracea L. var. italica Planch

作　　者：刘二艳[1] 刘玉梅[1] 方智远[1] 杨丽梅[1] 庄木[1] 张扬勇[1] 袁素霞[1] 孙继峰[1] 李占省[1] 孙培田[1] 

机构地区：[1]中国农业科学院蔬菜花卉研究所,北京100081

出　　处：《园艺学报》2009年第11期1611-1618,共8页Acta Horticulturae Sinica

基　　金：国家‘十一五’科技支撑计划项目(2006BAD13B06);农业部‘948’项目(2006-G-13A);国家大宗蔬菜技术体系;农业部园艺作物遗传改良重点开放实验室项目;浙江省重大科技专项农业项目(2008C12004-1)

摘　　要：以青花菜86101×90196组合获得的DH群体和配制的6个联合世代(P1、P2、F1、B1、B2和F2)群体为试材,采用主基因+多基因混合遗传模型对花球‘荚叶’性状进行了遗传分析。DH群体分析结果表明,花球荚叶性状的遗传受到2对连锁并具有加性—加性×加性—上位性作用主基因+多基因(E-2-0模型)的控制;经6个世代联合分析结果表明,花球荚叶性状的遗传受到2对加性—显性—上位性主基因+加性—显性—上位性多基因(E模型)的控制,DH群体的主基因遗传率为70.80%,B1、B2和F2世代主基因遗传率分别为73.59%、57.70%和87.07%。上述结果表明:青花菜花球荚叶性状的遗传受到2对主基因+多基因的控制,主基因遗传率相对较高。A double haploid （DH） population and six generations （P1、P2、F1、B1、B2 and F2） derived from a broccoli combination of 86101 and 90196 were used to investigate the inheritance of head-leaf trait in the Brassica oleracea L. var. italica Planch by using mixed major gene plus polygene inheritance model. The results showed that the head-leaf trait was controlled by linked two additive-additive additive-epitasis major genes plus polygene （E-2-0 model） in DH population and by two additive-dominant-epitasis major genes plus additive-dominant-epitasis polygene （E model） in the joint analysis of the six generations,and the major gene heritability were 70.80%,73.59%,57.70% and 87.07% in the DH,B1,B2 and F2 populations,respectively. The above results showed that the head-leaf trait was controlled by two major genes plus polygene,and the major gene heritability was relatively high.

关 键 词：青花菜 花球荚叶 主基因+多基因 遗传分析 

分 类 号：S635[农业科学—蔬菜学]