| 中国鹤虱属(Lappula Moench)分子系统学研究 |
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| 引用本文： | 黄建峰,张明理. 中国鹤虱属(Lappula Moench)分子系统学研究[J]. 干旱区研究, 2012, 29(5): 811-815 |
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| 作者姓名： | 黄建峰 张明理 |
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| 作者单位： | 1. 中国科学院新疆生态与地理研究所干旱区生物地理与生物资源重点实验室，新疆 乌鲁木齐 830011；;2. 中国科学院研究生院，北京 100049； 3. 中国科学院植物研究所，北京 100093 |
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| 基金项目： | 中国科学院新疆生态与地理研究所百人计划支持项目，干旱区生物地理与生物资源重点实验室资助 |
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| 摘 要： | 以黄花软紫草(Arnebia guttata Bunge)和双柱紫草(Coldenia procumbens L.)为外类群，用PAUP*4.0 对鹤虱属(Lappula Moench)13个代表种的核糖体ITS和叶绿体rpS16序列进行分子系统发育分析。采用最大简约法和最大似然法对获得的序列矩阵进行分析，得到一致性进化树。拓扑结构显示，Lappula为单系类群，前人对该属属下阶元的划分带有一定的人为主观性，不能完全真实反映其系统发育关系。结合形态学特征，得出该属植物大致沿着花由小型到大型，果实由同型到异型，小坚果边缘有瘤或刺到具翅这样的路线演化的。
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| 关 键 词： | 鹤虱属（Lappula ITS序列 rpS16序列 系统发育 |
| 收稿时间： | 2011-10-26; |
Study on Molecular Systematics of Genus Lappula Moench in China |
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| HUANG Jian-feng,ZHANG Ming-li. Study on Molecular Systematics of Genus Lappula Moench in China[J]. Arid Zone Research, 2012, 29(5): 811-815 |
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| Authors: | HUANG Jian-feng ZHANG Ming-li |
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| Affiliation: | 1. Key Laboratory of Biogeography and Biological Resources in Arid Land, Xinjiang Institute of Ecology and Geography, ;Chinese Academy of Sciences, Urumqi 830011, China;;2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China;;3. Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China |
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| Abstract: | In this paper,the molecular phylogeny of the sequences of nrDNA ITS and rpS16 regions of 13 species representing Lappula Moench was studied by taking Arnebia guttata and Coldenia procumbens as the outgroups and by using PAUP* 4.0.Consistent phylogenetic trees were obtained with the maximum likelihood and the maximum parsimony methods based on DNA sequence datasets.The topologies of gene trees revealed that the Lappula was monophyly,and the previous studies failed to avoid the subjectivity in the taxonomic categories and identified characters of the genus,making it unable to reflect the actual phylogenetic relationships of Lappula.Combining with morphology characteristics,this study concluded that the corollas of Lappula evolved from small form to large form,fruits from homotype to heterotype,and nutlet fringes from tuberculate or prickly one to winged one. |
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| Keywords: | Lappula ITS sequence rpS16 sequence phylogeny |
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