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题名: Cytological studies on the Sino-Himalayan endemic Solms-laubachia (Brassicaceae) and two related genera
作者: Yue, JP; Gu, ZJ; Al-Shehbaz, IA; Sun Hang(孙航)
刊名: BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
关键词: Desideria ; Himalayan-Hengduan Mountains ; karyotypes ; Parrya ; speciation
英文摘要: The karyotypes of six species of Solms-laubachia and one each of Parrya and Desideria (Brassicaceae) from the Himalayan-Hengduan Mountains (Tibet, Sichuan and Yunnan provinces) were investigated. Chromosome counts of S. xerophyta, S. lanata, S. platycarpa and D. baiogoinensis are reported for the first time and found to be diploid with 2n = 14. Diploid counts were also made of S. retropilosa, a species previously known to be a tetraploid. The karyotype formulae of D. baiogoinensis, S. eurycarpa, S. pulcherrima, S. retropilosa, S. xerophyta and S. platycarpa are 2n = 14 = 6 m + 6sm + 2st, whereas those of S. lanata and P. nudicaulis are 2n = 14 = 6 in + 2sm + 6st and 2n = 14 = 8 in + 4sm + 2st, respectively. Karyotypes and counts of S. eurycarpa and S. pulcherrima are in agreement with prior studies. The relationships within Solms-laubachia and among the three genera are discussed. Speciation within Solms-laubachia may have been the result of primarily intrachromosomal variation at the diploid level, and the genus probably evolved within the Himalayan-Hengduan Mountains instead of migrating from other regions. (C) 2004 The Linnean Society of London.
出版日期: 2004-05-01
卷号: 145, 期号:1, 页码:77-86
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0024-4074
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2757
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, Kunming Inst sBot, Kunming 650204, Yunnan, Peoples R China
2.Missouri Bot Garden, St Louis, MO 63166 USA

Recommended Citation:
JIPEI YUE;ZHIJIAN GU;IHSAN A. AL-SHEHBAZ;HANG SUN.Cytological studies on the Sino-Himalayan endemic Solms-laubachia (Brassicaceae) and two related genera,BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2004,145():77-86
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