| Systematic position of Myrtama Ovcz. ＆ Kinz. based on morphological and nrDNA ITS sequence evidence |
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| 作者姓名： | ZHANG Daoyuan ZHANG Yuan GASKIN J. F. CHEN Zhiduan |
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| 作者单位： | [1]Turpan Eremophytes Botanical Garden, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ururaqi 830011, China [2]Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China [3]USDA-ARS-NPARL, PO Box 463, Sidney, MT 59270, USA |
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| 基金项目： | Acknowledgements The work was supported by the Key Knowledge Innovation Project of the Chinese Academy of Sciences （Grant No. KZCX3-SW-343）. |
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| 摘 要： | Myrtama is a genus named from Myricaria elegans Royle in the 1970＇s in terms of its morphological peculiarities. The establishment of this genus and its systematic position have been disputed since its inception. ITS sequences from 10 species of Tamaricaceae are reported, and analyzed by PAUP 4.0b8 and Bayesian Inference to reconstruct the phylogenies. A single ITS tree is generated from maximum parsimony and MrBayes analyses, respectively. The molecular data set shows strong support for Tamarix and Myricaria as monophyletic genera, and Myrtama as a sister group to the genus Myricaria. Based on morphological differences, a single morphological tree is also generated, in which two major lineages existed but Myrtama is a sister group to Tamarix, rather than Myricaria. The evidence from DNA sequences and morphological characters supports that Myicaria elegans should be put into neither Myricaria nor Tamarix, but kept in its own monotypic genus.
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| 关 键 词： | ITS序列 形态特征 系统位置 DNA测序 |
| 收稿时间： | 2005-07-20 |
| 修稿时间： | 2005-07-202006-01-16 |
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