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题名: Infrageneric and sectional relationships in the genus Rhododendron (Ericaceae) inferred from ITS sequence data
作者: null(高连明); null(李德铢); Zhang, CQ; Yang, JB
刊名: ACTA BOTANICA SINICA
关键词: Rhododendron ; internal transcribed spacer (ITS) ; phylogeny ; infrageneric relationships
英文摘要: The internal transcribed spacer (ITS) regions of nuclear ribosomal DNA (including 5.8S rRNA) of 15 Rhododendron, species, representing most sections of the genus, one Ledum species and Cassiope fastigiata were sequenced. Together with the ITS sequences of 13 selected Rhododendron species and Bejaria racemosa downloaded from GenBank, we explored the infrageneric and sectional relationships of this important North Temperate genus by employing maximum-parsimony analysis using PAUP software. C. fastigiata and B. racemosa were designated as outgroups. The ITS-based tree inferred that: (1) Rhododendron was a well-supported monophyletic group, while subg. Therorhodion was basal to the rest of the genus; (2) Ledum was a member of Rhododendron, and its close relationship with the lepidote rhododendron was confirmed; (3) the lepidote rhododendron plus Ledum formed a strongly-supported monophyletic clade which was sister to the rest of the elepidote rhododendron; (4) the elepidote rhododendron formed a weakly-supported clade within which the monophyly of subg. Hynwrianthes and subg. Tsutsusi were strongly supported, while subg. Pentanthera and subg. Azaleastrum were polyphyletic; and (5) the monophyly of sect. Choniastnini, (subg. Azaleastrum) was strongly-supported, while subg. Tsutsusi could be sister to a weakly-supported clade composed of two sampled species of sect. Azaleastrum (subg. Azaleastrum) together with R. sentibarbatum, of subg. Mumeazalea.
出版日期: 2002-11-01
卷号: 44, 期号:11, 页码:1351-1356
语种: 英语
ISSN号: 0577-7496
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/3229
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Lab Plant Biodivers & Biogeog, Kunming 650204, Peoples R China

Recommended Citation:
Gao, LM; Li, DZ; Zhang, CQ; Yang, JB.Infrageneric and sectional relationships in the genus Rhododendron (Ericaceae) inferred from ITS sequence data,ACTA BOTANICA SINICA,2002,44(11):1351-1356
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