华南型黄瓜维生素C含量的遗传分析  

Genetic Analysis of VitaminC Content of The South China Type Cucumber

作　　者：许伟利[1] 司龙亭[1] 闵跃[1] 高平[1] 孟茜[1] 李坤 

机构地区：[1]沈阳农业大学园艺学院,辽宁沈阳110161 [2]黑龙江省农科院园艺分院,黑龙江哈尔滨150069

出　　处：《华北农学报》2012年第4期102-106,共5页Acta Agriculturae Boreali-Sinica

基　　金：辽宁省"十一五"重大科技攻关项目(2006215001)

摘　　要：探讨筛选组合(Ma7×W15)维生素C(Vc)含量的遗传机制。以相对低维生素C含量的自交系Ma7(p1)和相对高维生素C含量的自交系W15(p2)为亲本,构建6个世代群体材料,利用植物数量性状主基因+多基因混合遗传模型多世代联合分析方法分析华南型黄瓜中维生素C含量的遗传机制。结果表明,维生素C含量的最适遗传模型为一对加性主基因+加性-显性多基因混合遗传模型。在分离世代中主基因遗传率在B1、B2、和F2群体中分别为47.47%,36.34%,52.59%;多基因的遗传率分别为18.47%,0,21.63%;环境方差占表型方差的范围为25.78%～63.66%,环境对维生素C含量的遗传有较大的影响,说明在黄瓜维生素C含量的遗传体系中,微效多基因具有重要作用,这一性状适于高代选择。The research discussed the genetic mechanism of vitamin C （Vc） content in combination test Ma7 × W15. The materials were inbred lines（ Ma7 ,W15 ） ,in which Ma7 （P1）was relatively low levels of vitamin C line and W15 （P2） relatively high vitamin C content line,by applying the joint segregation analysis of a mixed genetic model of major gene plus poiy-gene in six generations to study the genetic mechanism of vitamin C content. The results of analysis suggested that the optimum model of vitamin C was a pair of additive major genes plus additive-dominant pol- ygenes mixed inheritance model,in B1, B2and F2populations,the estimated heritability of major genes was 47.47% , 36.34% ,52.59% , respectively. The heritability of poly-genes was 18.47% , 0 and 21.63% , respectively. The range of environmental variance in phenotypic variance was 25.78% - 63.66% , the environment factors had a greater role in genetic of vitamin C of cucumber. Results demonstrated that polygenes had played an important role in determining the vitamin C content in curcumber,and it would be more efficient to conduct selection in hight gen- eration for the trait.

关 键 词：黄瓜 维生素C 主基因-多基因 遗传 

分 类 号：S642.03[农业科学—蔬菜学]