大白菜雄性核不育复等位基因的鉴定

为了摸清大白菜核不育复等位基因在3种生态型大白菜品系中的分布特性.利用基因型为MsMs的大白菜纯合显性雄性不育株为母本.与68个正常可育的直筒、卵圆和平头型大白菜可育品系杂交.统计后代育性分离比例,鉴定各品系基因型,计算不同生态型可育品系在核不育位点上的基因频率和基因型频率.结果表明:直筒型大白菜可育品系以纯合隐性基因型msms为主,占71.43%:可育基因ms频率为76.79%,恢复基Ms频率为23.21%.卵圆型大白菜可育品系3种基因型Ms/MsfMsfms和msms分别占42.42%.39.40%和18.18%;Msf基冈频率为62.12%,ms基因频率为37.88%.平头型大白菜可育品系以纯合隐性基因型msms为主,占57.14%:Msf基因频率为33.33%,ms基因频率为66.67%.直简型和平头型大白菜可育品系的核不育复等位基因位点上以ms基因为主.而卵圆型大白菜可育品系的核不育复等位基因位点上以Msf基因为主.

Identification of Multiple Male Sterile Allele in Chinese Cabbage

The objective of this experiment was to investigate the characteristic distribution of nuclear sterile multiple allele genes of Chinese cabbage in 3 ecotype cabbage lines.A dominant male sterile Chinese cabbage MsMs was applied as test cross parent to make hybridizations with 68 male fertile cabbage lines belonging to Straight-tubbish,Ovate,or Level-head ecotypes.Through calculating the fertility segregation ratio of the progenies,and identifying the genotype of each male fertile lines,the gene and genotype...