Circumscriptions and Phylogenetic Relationships of Primula Sects. Auganthus and Ranunculoides: Evidence from nrDNA ITS Sequences  

报春花属藏报春组、毛茛叶报春组的界定和系统发育关系 :核糖体DNAITS序列证据(英文)

作　　者：郝刚[1] 胡启明[1] 李南淑[2] 

机构地区：[1]中国科学院华南植物研究所系统演化植物学中心,广州510650 [2]Department of Biology,Ewha Womans University

出　　处：《Acta Botanica Sinica》2002年第1期72-75,共4页Acta Botanica Sinica（植物学报：英文版）

基　　金：国家自然科学基金 ( 39970 0 5 3);中国科学院基金 (KSCX2-1-0 6B);韩国研究基金 (KRF-1999-0 15-DI 0 0 85 )~~

摘　　要：The circumscriptions of sections Auganthus Pax ex Balf. f. and Ranunculoides Chen et C. M. Hu in the genus Primula L. have been controversial, due to the different treatments of P. filchnerae Knuth. We conducted a phylogenetic analysis using sequences from the ITS region of nuclear ribosomal DNA. All five species of these two sections and some representatives of other related sections were sampled. The ITS trees show that P. filchnerae could be convincingly placed in sect. Auganthus , together with P. sinensis Sabine ex Lindl. and P. rupestris Balf. f. et Farrer, whereas sect. Ranunculoides contains two species: P. cicutariifolia Pax and P. merrilliana Schltr. These two sections are distantly related and their association with other sections needs further studies. This study also demonstrated that ITS sequences would be a suitable marker for the reconstruction of Primula phylogeny.报春花属 (PrimulaL .)藏报春组 (sect.AuganthusPaxexBalf.f.)和毛茛叶报春组 (sect.RanunculoidesChenetC .M .Hu)的界定一直是没有解决的问题。应用核糖体DNAITS序列数据探讨其系统发育关系。取样包括藏报春组和毛茛叶报春组的全部 5个种以及其他一些相关组的代表种。ITS系统树表明 ,陕西羽叶报春 (P .filchneraeKnuth)应与藏报春 (P .sinensisSabineexLindl.)和野藏报春 (P .rupestrisBalf.f.etFarrer)一起置于藏报春组 ;毛茛叶报春组只含两种 :毛茛叶报春 (P .cicutariifoliaPax)和安徽羽叶报春 (P .merrillianaSchltr.)。这两组并不具密切亲缘关系 ,它们在报春花属中与其他组的关系还需进一步研究。

关 键 词：PRIMULA sect.   Auganthus sect.   Ranunculoides PHYLOGENY ITS PRIMULACEAE 

分 类 号：Q949.7[生物学—植物学] Q946.2