西双版纳黄瓜RIL群体叶绿素含量的遗传分析  

Genetic Analysis of Chlorophyll Content in A RIL Population Derived from Xishuangbanna Cucumber

作　　者：马政[1] 薄凯亮[1] 冀刚[1] 钱春桃[1] 陈劲枫[1] 

机构地区：[1]作物遗传与种质创新国家重点实验室.南京农业大学,南京210095

出　　处：《中国瓜菜》2011年第6期11-13,共3页China Cucurbits And Vegetables

摘　　要：西双版纳黄瓜(Cucumis sativus L.var.xishuangbananesis Qi et Yuan)是我国特有的一个黄瓜变种。以其与北京截头黄瓜为亲本构建的重组自交系群体(RIL)为材料,通过测定RIL群体中叶绿素a、叶绿素b、叶绿素总量含量以及叶绿素a/b值,分析其叶绿素含量的遗传规律。结果表明:在RIL群体中,叶绿素a、叶绿素b以及叶绿素总量含量均为连续变异,而且分布频率符合正态分布,存在明显的双向超亲分离现象。此外,对RIL群体与亲本进行叶绿素含量分析比较,选出了6个叶绿素b含量和叶绿素a/b值均优于亲本的株系,为进一步研究黄瓜耐弱光机制奠定了一定的基础。Xishuangbanna cucumber（Cucumis sativus L .var.xishuangbananesis Qi et Yuan） is an unique variety of cucumber.In this experiment,chlorophyll a,chlorophyll b,chlorophyll a/b and total chlorophyll content were measured to study inheritance of chlorophyll content in the recombinant inbred lines（RIL） derived from Beijingjietou crossed with Xishuangbanna cucumber.Continuous variation in the RIL population was observed for chlorophyll a,chlorophyll b,chlorophyll a/b and total chlorophyll content.The frequency of chlorophyll content was normal distributed with apparent transgressive segregation.Six lines with higher chlorophyll b and a/b than their parents were selected.These researches laid the foundation for further investigating genetics of low light tolerance in cucumber.

关 键 词：西双版纳黄瓜 叶绿素 重组自交系 

分 类 号：S642.2[农业科学—蔬菜学]