| 基于ITS序列对中国簇毛黄耆亚属（黄耆属）系统学问题的初步研究 |
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| 引用本文： | 康云,张明理,等.基于ITS序列对中国簇毛黄耆亚属（黄耆属）系统学问题的初步研究[J].Acta Botanica Sinica,2003,45(2):140-145. |
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| 作者姓名： | 康云 张明理 |
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| 作者单位： | 中国科学院植物研究所系统与进化重点实验室与标本馆 北京100093
(康云，张明理)，中国科学院植物研究所系统与进化重点实验室与标本馆 北京100093(陈之端) |
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| 基金项目： | 国家自然科学基金 (3 9870 0 5 4，3 993 0 0 2 0 )，中国科学院知识创新工程 (KSCX2_1_0 6B)~~ |
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| 摘 要： | 测定了簇毛黄耆亚属（Pogonophace)4组8种和外类群Caragana roborovskyi的ITS序列，从GenBank中调出相关12属47种的ITS序列，组成数据距阵，应用PAUP程序中的最大简约法构建了系统发育树状图。扁荚组（Sect.Sesbanella)与亚属其余类群在系统树上处于不同的分支，亲缘关系较远这个亚属不是一个单系类群；膨果组（Sect.Bibracteola)。背扁组（Sect.Phyllolobium)和袋果组（Sect.Trichostylus)作为一个单系类群能得到ITS序列的支持，但与分组以及膨果组下系的划分都得不到ITS序列分析的支持。
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| 关 键 词： | 簇毛黄耆亚属 黄耆属 鱼鳔槐亚族 ITS序列 系统发育 |
A Preliminary Phylogenetic Study of the Subgenus Pogonophace ( Astragalus ) in China Based on ITS Sequence Data |
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| Authors: | KANG Yun ZHANG Ming_Li CHEN Zhi_Duan |
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| Institution: | KANG Yun,ZHANG Ming_Li *,CHEN Zhi_Duan |
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| Abstract: | The internal transcribed spacers (ITS) (including ITS1, 5.8S rRNA gene and ITS2) of Caragana roborovskyi and eight species of subgenus Pogonophace ( Astragalus ) were sequenced, and analyzed together with other ITS data (from GenBank) of 48 species representing Astragalus and 12 related genera. The results of phylogenetic analyses suggest that the subgenus Pogonophace is not a monophyletic group. Sect. Sesbanella ( Astragalus hoantchy and A. dshimensis ) and other species of Pogonophace are nested within different major clades in the phylogenetic tree. The species of sections Bibracteola , Phyllolobium and Trichostylus compose a monophyletic group with a close relationship to subtribe Coluteinae instead of Astragalus . Astragalus tribulifolius and A. tanguticus might be a vicariant species pair as inferred by the ITS data. |
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| Keywords: | Pogonophace Astragalus Coluteinae ITS phylogeny |
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