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作 者 ：廖文芳 夏念和 邓云飞 郑庆衍

期 刊 ：云南植物研究 2004年 26卷 01期 页码：1-3

关键词：华木莲；木莲属；遗传多样性；ISSRPCR；

Keywords:Iris subdichotoma；Flower morphology；Taxonomic position,

摘 要 ：利用ISSR标记对中国特有植物华木莲(Manglietia decidua Q.Y.Zheng)的遗传多样性进行了研究，从90个引物中筛选出10个引物用于正式扩增，共扩增出81条DNA带，其中多态性DNA带14条，占17.28%，平均每个引物扩增的DNA带8.1条，多态性条带1.4条。结果表明：华木莲的遗传多样性水平较低(种水平的遗传多样性HT为0.0649，居群水平的遗传多样性HS为0.0515，多态位点百分率P为17.28%)。与物种的遗传多样性平均水平、同科的其它种类以及其它特有植物相比，华木莲的遗传多样性极低。

Abstract:First,Iris subdichotoma Y.T.Zhao was put in SubgenPardanthopsis (Hance) Baker in 1985 as its appearance is similar to Idichotoma Pall.,and then it was moved into SubgenCrossiris Spach by Dong et al.in 1999,when a clear crested appendage on outer perianth was noticed from other materials.But we prefer to regard it as a member of SubgenNepalensis (Dykes) Lawr.by reasons of possessing slender residues of withered leaves at its base,short rhizome,scape arising beyond basic leaves,blooming habit,sculpture of pollens.In addition,a white flower form of Isubdichotoma was found in wild.

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