作　　者： ; ; ; ; ;

机构地区： 韶关学院英东生物工程学院

出　　处： 《园艺学报》 2007年第6期 1569-1574,共6页

摘　　要： 采用AFLP技术对我国38种石斛属植物进行亲缘关系分析，从64对选择性引物中筛选出8对引物组合，共扩增出1644个位点，其中多态性位点1639，占总扩增位点的99．7％，说明我国石斛属植物遗传多态性水平很高。聚类分析结果表明，石斛组和黑毛组并没有形成独立的分支；剑叶组和圆柱叶组植物共同构成一个分支，并与其它组之间的相似度较低，说明该两组与其它组之间的亲缘关系较远；禾叶组、草叶组和叉唇组均形成独立的分支，有向各自的演化方向发展的趋势。国产石斛属植物亲缘关系比较复杂，并非是一个单系类群，可能存在一些并系类群或多系类群。 Thirty-eight species of Denclrobium were analyzed phylogenetically using AFLP technique. Eight pairs of primers combination were screened from 64 pairs of primers combination and generated 1 644 amplified loci, 1 639 of which were polymorphic loci which accounted for 99. 7 % in the total amplified loci. It showed that the generation diversity standard of Dendrobium was very high in our country. Cluster analysis showed that Sect. Dendrobium and Sect. Formosae did not form an independent branch, Sect. Aporum and Sect. Strongyle were consisted of a common branch. They had a lower similarity with another section. Sect. Grastidium, Sect. Stachyobium and Sect. Stuposa formed an independent branch. They had a different evolution direction. Genetic relationship in domestic Dendrobium was much more complicated, and they were not a monophyletic group in nature, but a paraphyletic or polyphyletic group.

关 键 词： 石斛属 亲缘关系

分 类 号： [S682.31]

领　　域： [农业科学] [农业科学]