粉蕉、大蕉和龙牙蕉的AFLP分类研究  

Studies on the Certification of Musa ABB group Dajiao, M. AAB group Fenjiao and M.AAB group Longyajiao by AFLP

作　　者：易干军[1] 余晓英[2] 霍合强[1] 谭卫萍[2] 黄自然[3] 陈大成[3] 黄秉智[1] 

机构地区：[1]广东省农业科学院果树研究所,广州510640 [2]湖南农业大学,长沙410128 [3]华南农业大学,广州510640

出　　处：《园艺学报》2002年第5期413-417,共5页Acta Horticulturae Sinica

基　　金：国家自然科学基金资助项目(30170657);广东省自然科学基金资助项目(990511)

摘　　要：应用AFLP技术 ,对 32个粉蕉、大蕉、龙牙蕉品种进行了遗传多样性分析及分类研究。在分子水平上 ,可将供试品种聚为 6个独立群体 ,其中包括 3个分别由单一品种组成的群体 (群体Ⅳ :酸大蕉 ;群体Ⅴ :孟变 ;群体Ⅵ :千旁培 ) ;可以将群体Ⅰ (大蕉 )和群体Ⅱ (粉蕉 )分别划分为 3个品种群 ,将群体Ⅲ (龙牙蕉 )划分为 2个品种群。参照Simmonds的形态学分类方法 ,研究结果显示粉蕉、大蕉以及龙牙蕉各个品种之间存在丰富的遗传多样性 ,将其划分为AAB或ABB等类型 ,不能反映品种间的亲缘关系 ;粉蕉与大蕉两个类群之间遗传距离差异明显 ,将其简单的归为ABB类型是不妥当的。AFLP analysis revealed that an abundant genetic diversity existed among Musa ABB group Fenjiao, Musa ABB group Dajiao and Musa AAB group Longyajiao. UPGMA analysis showed that 32 Fenjiao, Dajiao and Longyajiao cultivars were divided into 6 groups including 3 groups made of single cultivar. Group Ⅰ(Musa ABB group Dajiao) were divided into three subgroups. Group Ⅱ(Musa ABB group Fenjiao)included three subgroups. Musa AAB group Longyajiao(Group Ⅲ) were divided into two subgroups. The results showed that Fenjiao,Dajiao,and Longyajiao can not be divided into AAB or ABB group simply because of the abundant genetic diversity existed among them. It will not be able to reflect the genetic relationships among Fenjiao, Dajiao and Longyajiao. There was very significant difference between Fenjiao and Dajiao.It is inappropriate to set Fenjiao and Dajiao into the same ABB group according to Simmonds' system.

关 键 词：粉蕉 大蕉 龙牙蕉 AFLP分类 香蕉 遗传多样性 

分 类 号：S668.1[农业科学—果树学]