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题名: Chromosome variation in the genus Pinellia (Araceae) in China and Japan
作者: null(伊廷双); Li, H; null(李德铢)
刊名: BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
关键词: cytotaxonomy ; evolution ; polyploidy
英文摘要: The chromosome numbers of 23 populations belonging to seven species of Pinellia Tenore were counted. The basic chromosome number of all the species studied was x = 13, and the previously reported basic numbers x = 9 and x = 14 in P. ternata and P. cordata were not confirmed. Chromosome numbers of 2n = 26 in P. polyphylla and 2n = 78 in P. integrifolia are reported for the first time. Heptaploid (7x) and nonuploid (9x) are new ploidy levels reported for P. ternata, and hexaploid for P. cordata. Taxonomic, phylogenetic and phytogeographical inferences are made for the genus. Particular attention was given to P. ternata, the most widely distributed species in the genus, and considerable variation of chromosome number was found in its different populations. Based on chromosome studies of 11 populations of P. ternata, together with 12 populations reported in previous studies, the lower reaches of the Yangze River are identified as its centre of origin. From there it dispersed, with generation of hexaploid, heptaploid, octoploid and nonuploid forms. (c) 2005 The Linnean Society of London, Botanical Journal of the Linnean Society.
出版日期: 2005-04-01
卷号: 147, 期号:4, 页码:449-455
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/11205
Appears in Collections:中国西南野生生物种质资源库_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, Yunnan, Peoples R China

Recommended Citation:
Yi, TS; Li, H; Li, DZ.Chromosome variation in the genus Pinellia (Araceae) in China and Japan,BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2005,147(4):449-455
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