摘要
为探讨黄瓜瓜长的遗传机制,以2个性状稳定的华北型黄瓜自交系(Ma1×Mj-5)为亲本,构建6个世代(P1、P2、F1、B1、B2、F2)联合群体材料,采用植物数量性状主基因+多基因混合遗传模型对群体的瓜条长度进行多世代联合分析。结果表明,黄瓜瓜条长度遗传受1对加性-显性主基因+加性-显性-上位性多基因控制,在B1、B2和F2群体中主基因遗传率分别为52.28%、18.04%、67.20%,多基因遗传率分别为9.90%、35.93%和0;环境方差占表型方差的比例分别为37.82%、46.03%、32.80%。环境因素对黄瓜瓜条长度的影响较大,该性状适宜高代选择。
The research discussed the genetic mechanism of fruit length in cucumber.Using the model of the major gene plus polygene of quantitative traits,a joint analysis of six-generations（P1,P2,F1,B1,B2,and F2） from the cross of two North China cucumber lines was carried out to investigate the inheritance of the fruit length in cucumber.The results showed that the inheritance of the fruit length of North China cucumber was controlled by one major gene plus polygene（D model）,in B1,B2,and F2 populations the estimated heritability of major gene was 52.28%,18.04%,67.20%,respectively.The heritability of polygene was 9.90%,35.93% and 0,respectively.The proportion of environmental variance in phenotypic variance was 37.82%,46.03%,32.80%,respectively.The environmental factors had strong effects on fruit length in cucumber.The trait can be selected in the high generation selection.
出处
《西北农业学报》
CAS
CSCD
北大核心
2012年第3期114-117,147,共5页
Acta Agriculturae Boreali-occidentalis Sinica
基金
辽宁省"十一五"重大科技攻关项目(2006215001)
关键词
黄瓜
瓜长
主基因+多基因
遗传分析
Cucumber
Fruit length
Major gene plus polygene
Genetic analysis
