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题名: Molecular phylogeny of Incarvillea (Bignoniaceae) based on its and trnL-F sequences
作者: Chen, ST; null(管开云); null(周浙昆); Olmstead, R; Cronk, Q
刊名: AMERICAN JOURNAL OF BOTANY
关键词: Bignoniaceae ; classification ; Himalaya-Hengduan Mountains ; Incarvillea ; ITS ; phylogenetics ; radiation trnL-F
英文摘要: Incarvillea is a herbaceous and temperate member of Bignoniaceae, previously divided into four subgenera, Niedzuwedzzkio, Amphicome, Incarvillea, and Pteroscleris. Niedzwedzkia and Amphicome have in the past been treated as independent genera. Different relationships have been proposed for the four subgenera. Here, maximum parsimony analysis using ITS and trnL-F sequences resulted in similar trees and showed that the genus is monophyletic. Analysis of the combined data resulted in a single tree with five major clades highly supported and well resolved. The relationships of the five major clades are (subgenus Niedzwedzkia (Incarvillea olgae (subgenus Amphicome (subgenus Incarvillea, subgenus Pteroscleris)))). All four subgenera are well supported for monophyly, with the exception of subgenus Incarvillea, represented here by I. sinensis and I. olgae. Incarvillea olgae is not closely related to L sinensis, a conclusion supported by morphology. The two basal monotypic subgenera are found in Central Asia. The most species-rich subgenus, Pteroscleris, has 10 species in the Himalaya-Hengduan Mountains and may have dispersed early from central Asia to eastern Asia. Short branch lengths on the molecular trees within Pteroscleris suggest a recent and rapid radiation of this rosette-forming subgenus, perhaps connected with the uplift of the Himalaya-Hengduan massif.
出版日期: 2005-04-01
卷号: 92, 期号:4, 页码:625-633
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0002-9122
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/3249
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, Kunming 650204, Yunnan, Peoples R China
2.Univ Washington, Dept Biol, Seattle, WA 98195 USA
3.Univ British Columbia, Fac Agr Sci, Bot Gardens, Vancouver, BC V6T 1Z4, Canada
4.Univ British Columbia, Fac Agr Sci, Ctr Plant Res, Vancouver, BC V6T 1Z4, Canada

Recommended Citation:
Chen, ST; Guan, KY; Zhou, ZK; Olmstead, R; Cronk, Q.Molecular phylogeny of Incarvillea (Bignoniaceae) based on its and trnL-F sequences,AMERICAN JOURNAL OF BOTANY,2005,92(4):625-633
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