| 基于5.8SrDNA序列论三白草科的系统发育 |
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| 引用本文： | 孟少武,李德铢.基于5.8SrDNA序列论三白草科的系统发育[J].云南植物研究,2001,23(3):309-312. |
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| 作者姓名： | 孟少武 李德铢 |
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| 作者单位： | 中国科学院昆明植物研究所植物分类学研究室 |
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| 基金项目： | 国家杰出青年基金NSFC
39725001及中科院百人计划CAS [1998] 0054 等项目的资助 |
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| 摘 要： | 三白草科（Saururaceae)是古草本的一个核心类群，它的研究对被子植物起源和早期演化具有重要意义，本文采用最大简约法（maximum parsimony method)和邻接法（neighbor-joining method)等不同的分析方法，对三白草科及其外类群齐头绒（Zippelia begoniaefolia Blume)的5.85rDNA序列进行分析，得到一致的结论：Anemopsis最早从三白草科中分离出来，Saururus chinensis和S.cernuus是一对姐群，由于5.85rDNA序列的变异位点和信息位点相对比较少，Gymnotheca chinensis-G.involucrata-Houttuynia-Saururus之间难以通过5.8SrDNA序列的比较进行分辨。
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| 关 键 词： | 5.8SrDNA序列 三白草科 系统发育 |
| 文章编号： | 0253-2700(2001)03-0309-04 |
The Phylogeny of Saururaceae Based on 5.8S rDNA Sequences |
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| MENG Shao-Wu,LI De-Zhu,LIANG Han-Xing.The Phylogeny of Saururaceae Based on 5.8S rDNA Sequences[J].Acta Botanica Yunnanica,2001,23(3):309-312. |
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| Authors: | MENG Shao-Wu LI De-Zhu LIANG Han-Xing |
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| Abstract: | Saururaceae is a core component of paleoherbs, and is very important for studying the origin and development of early angiosperms. By using different analysis method, such as the maximum parsimony method and the neighbor-joining method, we analyzed the 5 8S rDNA sequences of Saururaceae and the outgroup Zippelia begoniaefolia Blume. The conclusions are the similar, that is, Anemopsis departs from Saururaceae at first, Saururus chinensis is the sister to S. cernuus . However, it is difficult to differt the Gymno theca chinensis - G. involucrata - Houttuynia - Saururus clade by using 5 8S rDNA sequences. |
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| Keywords: | S rDNA sequences Saururaceae Phylogeny |
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