大白菜(大白菜×紫色小白菜)叶片紫色性状的遗传分析  

Genetic Analysis of Leaf Color Characteristics with Purple Genes on Chinese Cabbage(Chinese Cabbage×Purple Pakchoi)

作　　者：张德双[1] 张凤兰[1] 赵岫云[1] 余阳俊[1] 徐家炳[1] 于拴仓[1] 汪维红[1] 

机构地区：[1]北京市农林科学院蔬菜研究中心,北京100097

出　　处：《中国蔬菜》2011年第2期36-38,共3页China Vegetables

基　　金：北京市自然科学基金项目(6092009);北京市农林科学院青年科研基金项目资助

摘　　要：以大白菜(叶片绿色)和紫色小白菜(叶片紫色)为亲本进行杂交、回交和自交,研究大白菜叶片紫色的遗传规律。结果表明,大白菜和紫色小白菜杂交F1的叶片均为紫色,但其叶片色泽较亲本紫色小白菜浅。在F2群体中,叶片颜色分离比例接近3紫色:1绿色,BC1群体为1紫色:1绿色,而BC2群体叶片全部为紫色。χ2检测结果进一步证明:大白菜和紫色小白菜杂交后代叶片紫色对绿色受1对遗传基因控制,紫色对绿色为显性,决定叶片紫色的基因具有累加效应。F1,F2,BC1 and BC2 generations were obtained through crossing,self-crossing and back-crossing by Chinese cabbage〔Brassica campestris L.ssp.pekinensis（Lour）Olsson〕of green leaves with purple pakchoi〔Brassica campestris L.ssp.chinensis（L.）Makino var.communis Tsen et Lee〕of purple leaves in order to study the genetic characteristics of leaf color.The results showed that leaf colors of F1 hybrid were purple,but its leaf colors were lighter than those of purple pakchoi.The ratios were close to 3 purple：1 green for F2 progenies,1 purple：1 green for BC1 progenies.For BC2 progenies,all plants owned purple colors.The results of χ2 test further proved that heredity of leaf color with purple genes on Chinese cabbage was controlled by one pair of gene.Purple genes were dominant genes compared with green genes and they showed addition effect.

关 键 词：大白菜(大白菜×紫色小白菜) 紫色 遗传分析 

分 类 号：S634.1[农业科学—蔬菜学]