甜瓜F_2代群体果实性状的遗传分析  

Genetic Inheritance Analysis on Melon Fruit Mass in F_2 Generation

作　　者：盛云燕[1] 陈克农[2] 矫士琦 戴冬洋 

机构地区：[1]黑龙江八一农垦大学农学院,黑龙江大庆163319 [2]东北农业大学园艺学院,黑龙江哈尔滨150030

出　　处：《北方园艺》2016年第7期9-12,共4页Northern Horticulture

基　　金：国家自然基金资助项目(31401892);教育部归国留学科研资助项目;黑龙江八一农垦大学博士科研启动资助项目(2031011003)

摘　　要：以果实性状差异较大的来源于美国的厚皮甜瓜ms-5和黑龙江省薄皮甜瓜HM-1为亲本,构建P_1、P_2、F_1和F_2群体,采用植物数量性状主基因-多基因混合模型对甜瓜果实单果重、果肉厚度和果肉颜色进行遗传分析。结果表明:单果重受到2对加性-显性多基因模型控制;果肉厚度受到1对主基因控制;果肉颜色受到2对加性-显性-上位效应多基因控制。主基因在F_2代群体中遗传率分别为73.79%、73.90%、88.85%。控制这3个性状的遗传率在F_2代中表现较高,说明适合早代进行选择,受环境影响小。Two parental lines which were ms-5 from American thickness peel melon and Chinese thin peel melon HM-1were used to cross P_1,P_2,F_1 and F_2 generation.Using mixed major gene plus polygene inheritance model to investigate the inheritance of fruit mass.The results showed single fruit weight was controlled by two pairs of additive-dominant major gene model,fruit thickness was controlled by one major gene model and fruit color was controlled by two major additive-dominant-epistatic polygene model effect.And the habitability of major genes in F_2 population were estimated as73.79%,73.90%,88.85%,respectively.It indicated that fruit mass were more suitable to conduct selection in early generation as less influence by environment.

关 键 词：甜瓜 单果重 果肉厚度 果肉颜色 主-多基因 遗传分析 

分 类 号：S652.603.6[农业科学—果树学]