黄瓜株高性状遗传模型分析  

Genetic model analysis of plant height in Cucumis sativus L

作　　者：嵇怡[1] 徐强[1] 陈学好[1] 

机构地区：[1]扬州大学园艺与植物保护学院,江苏扬州225009

出　　处：《扬州大学学报（农业与生命科学版）》2009年第3期75-79,共5页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：江苏省农业高技术研究计划项目(BG2004313)

摘　　要：以矮生黄瓜D8和蔓生黄瓜JIN5杂交并自交及回交所获得的6个世代(P1、P2、F1、BC1、BC2和F2)为材料,利用主基因+多基因混合数量性状遗传模型对黄瓜株高性状进行遗传分析。黄瓜株高性状的遗传模型适合D-1模型。主基因的加性效应值为31.06,显性效应值为正向5.76,显性度为0.19,主基因的遗传率变化较大,在BC1、BC2和F23个世代的估计值分别为36.88%、61.89%和70.03%,其中以F2的主基因遗传率最高,BC1的主基因遗传率最低;多基因的遗传率分别为9.85%、12.37%和30.61%,F2的多基因遗传率最低,BC1的多基因遗传率最高。黄瓜株高性状由主基因和多基因的共同作用决定,其中以主基因遗传为主;在黄瓜育种实践中在早世代对株高选择有效。The method of quantitative traits heredity model was used in the analysis of the genetic effects of cucumber plant height.Six generations of P1,P2,F1,BC1,BC2 and F2 derived from the cross of dwarf line D8 and long vine line JIN5 of cucumber were obtained.The genetic effects of plant height based on the major gene and polygene mixed genetic model were analyzed.The results showed that the heredity of plant height could be explained by D-1 genetic model,which was an additive-dominance major and additive-domina...

关 键 词：矮生黄瓜 株高 主基因+多基因 遗传模型 

分 类 号：S642.2[农业科学—蔬菜学]