Karyological studies on the Sino-Himalayan endemic Soroseris and two related genera of tribe Lactuceae (Asteraceae)
Zhang, Jian-Wen; Sun, Hang; Nie, Ze-Long
Corresponding Authorhsun@mail.kib.ac.cn
2007-05-01
Source PublicationBOTANICAL JOURNAL OF THE LINNEAN SOCIETY
ISSN0024-4074
Volume154Issue:1Pages:79-87
Abstract

Karyological studies were carried out on ten populations comprising six species of Soroseris in the tribe Lactuceae (Asteraceae), all endemic to the alpine Sino-Himalayan region and poorly known cytogenetically. The single species of Stebbinsia (one population) and two species of Syncalathium (three populations) were also examined for the first time. The basic chromosome number for the three genera is x = 8. Stebbinsia and most species of Soroseris are diploids with 2n = 2x = 16 = 14m + 2sm and have a karyotype asymmetry type 1A. Three species of Soroseris are tetraploid (2n = 4x = 32 = 28m + 4sm). A karyotype of 2n = 2x = 16 = 14m(2SAT) + 2sm with type 1A asymmetry was found in Syncalathium kawaguchii, and of 2n = 2x = 16 = 6m + 10sm with type 2A asymmetry for two populations of Syncalathium souliei. The relationships between Soroseris and the other two genera are discussed. Our cytological results suggest that polyploidy plays a minor role in the chromosome evolution of plants from the Himalayan mountains and adjacent regions. (C) 2007 The Linnean Society of London.

KeywordChromosome Number Karyotype Stebbinsia Syncalathium
Subject AreaPlant Sciences
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000246577000007
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/2779
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, Yunnan, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Jian-Wen,Sun, Hang,Nie, Ze-Long. Karyological studies on the Sino-Himalayan endemic Soroseris and two related genera of tribe Lactuceae (Asteraceae)[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2007,154(1):79-87.
APA Zhang, Jian-Wen,Sun, Hang,&Nie, Ze-Long.(2007).Karyological studies on the Sino-Himalayan endemic Soroseris and two related genera of tribe Lactuceae (Asteraceae).BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,154(1),79-87.
MLA Zhang, Jian-Wen,et al."Karyological studies on the Sino-Himalayan endemic Soroseris and two related genera of tribe Lactuceae (Asteraceae)".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 154.1(2007):79-87.
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