Chromosome counts and karyotypes in Chaetoseris and Stenoseris (Asteraceae-Cichorieae) from the Hengduan Mountains of SW China
Deng, Tao1; Meng, Ying1,2; Sun, Hang1; Nie, Ze-Long1
Corresponding Authorniezl@mail.kib.ac.cn
2011-07-01
Source PublicationJOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN1674-4918
Volume49Issue:4Pages:339-346
Abstract

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.

KeywordAsteraceae Chaetoseris Cichorieae Hengduan Mountains Karyotype Stenoseris
Subject AreaPlant Sciences
DOI10.1111/j.1759-6831.2011.00114.x
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000293273200004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/3910
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Affiliation1.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
GB/T 7714
Deng, Tao,Meng, Ying,Sun, Hang,et al. Chromosome counts and karyotypes in Chaetoseris and Stenoseris (Asteraceae-Cichorieae) from the Hengduan Mountains of SW China[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2011,49(4):339-346.
APA Deng, Tao,Meng, Ying,Sun, Hang,&Nie, Ze-Long.(2011).Chromosome counts and karyotypes in Chaetoseris and Stenoseris (Asteraceae-Cichorieae) from the Hengduan Mountains of SW China.JOURNAL OF SYSTEMATICS AND EVOLUTION,49(4),339-346.
MLA Deng, Tao,et al."Chromosome counts and karyotypes in Chaetoseris and Stenoseris (Asteraceae-Cichorieae) from the Hengduan Mountains of SW China".JOURNAL OF SYSTEMATICS AND EVOLUTION 49.4(2011):339-346.
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