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题名: Chromosome numbers of 13 species in the genus Dryopteris (Dryopteridaceae) from Yunnan, China
作者: Xiang, JY; Cheng, X; Wu, SG
刊名: ACTA PHYTOTAXONOMICA SINICA
关键词: Dryopteris ; chromosome number ; cytotype ; cytotaxonomy
英文摘要: Chromosomes of 13 species in the genus Dryopteris Adanson (Dryopteridaceae) from Yunnan, China have been counted. The numbers in four species, D. alpestris Tagawa (2n=82), D. habaensis Ching (2n=82), D. lachoongensis (Bedd.) Nayar & Kaur (2n=82), and D. yungtzeensis Ching (2n=82), were reported for the first time. The triploid apomict D. rosthornii (Diels) C. Chr. (2n=123), the tetraploid apomict D. wallichiana (Spreng.) Hylander ('n'=164, 2n=164) and the diploid apomict D. yoroii Serizawa (2n=82) represent three new cytotypes. Our results support the establishment of the section Caespitosae S. G. Lu, and indicate a high percentage of the diploid apomict cytotype in Dryopteris from the Himalayan region of China. The phenomenon of the presence of different cytotypes in a same plant of fern species is discussed.
出版日期: 2006-05-01
卷号: 44, 期号:3, 页码:304-319
语种: 英语
ISSN号: 0529-1526
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/13497
Appears in Collections:离退休_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:
Xiang, JY; Cheng, X; Wu, SG.Chromosome numbers of 13 species in the genus Dryopteris (Dryopteridaceae) from Yunnan, China,ACTA PHYTOTAXONOMICA SINICA,2006,44(3):304-319
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