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题名: Chromosome counts and karyotypes in Chaetoseris and Stenoseris (Asteraceae-Cichorieae) from the Hengduan Mountains of SW China
作者: Deng, Tao1; Meng, Ying1, 2; Sun Hang(孙航)1; Nie, Ze-Long1
刊名: JOURNAL OF SYSTEMATICS AND EVOLUTION
关键词: Asteraceae ; Chaetoseris ; Cichorieae ; Hengduan Mountains ; karyotype ; Stenoseris
英文摘要: Chaetoseris and Stenoseris are two morphologically close genera from the tribe Cichorieae of the sunflower family and they are endemic in alpine eastern Himalayas to the Hengduan Mountains of SW China. Mitotic chromosome numbers and karyotypes are reported for 12 populations representing eight species of Chaetoseris and two species of Stenoseris from the Hengduan Mountains region. Eight species are new and the other two provide confirmation of previous reference. All Chaetoseris and Stenoseris taxa are diploidy with 2n = 16 and their basic number is tentatively suggested as x = 8. Karyotypes of Chaetoseris and Stenoseris are similar to each other with 2A and 2B for the former and 2A for the latter. Cytological data of chromosomal numbers and karyotypes support a close relationship of the two genera. Currently no polyploids are found for these two genera and it seems that polyploidization has played a minor role in their evolutionary speciation in the Hengduan Mountains region.
出版日期: 2011-07-01
卷号: 49, 期号:4, 页码:339-346
DOI标识: 10.1111/j.1759-6831.2011.00114.x
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 1674-4918
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/3910
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, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Inst Tibetan Plateau Res Kunming, Kunming 650204, Peoples R China

Recommended Citation:
Deng, Tao; Meng, Ying; Sun, Hang; Nie, Ze-Long.Chromosome counts and karyotypes in Chaetoseris and Stenoseris (Asteraceae-Cichorieae) from the Hengduan Mountains of SW China,JOURNAL OF SYSTEMATICS AND EVOLUTION,2011,49(4):339-346
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