Cytological studies on the Sino-Himalayan endemic Anisodus and four related genera from the tribe Hyoscyameae (Solanaceae) and their systematic and evolutionary implications
Tu, TY; Sun, H; Gu, ZJ; Yue, JP
2005-04-01
发表期刊BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
ISSN0024-4074
卷号147期号:4页码:457-468
摘要Cytological studies were carried out on eight species of five genera (Anisodus, Atropanthe, Hyoscyamus, Mandragora and Przewalskia) in the tribe Hyoscyameae (Solanaceae). First chromosome counts were reported in six species: Anisodus luridus, A. acutangulus, A. tanguticus, A. carniolicoides, Atropanthe sinensis and Mandragora caulescens, all with 2n = 8x = 48. Two records, for Hyoscyamus niger (2n = 2x = 34) and Przewalskia tangutica (2n = 4x = 44), were also confirmed. All species studied showed the proximal type of mitotic prophase chromosome condensation pattern. Three types of interphase nuclei were recognized: the round prochromosome type for Anisodus, Atropanthe and Mandragora, the rod prochromosome type for Przewalskia and the complex chromocentre type for Hyoscyamus. The cytological data supported the close relationship of all four species of Anisodus. Evidence from the interphase nuclei and chromosome base numbers supported the traditional classification of Hyoscyameae into two groups, i.e. Physochlaina praealta + Hyoscyamus (complex interphase type and x = 7, 14, 17) and Przewalskia + Atropanthe + Anisodus + Scopolia + Atropa + Mandragora (prochromosome type and x = 6, 11). Polyploidy is found in most species of the tribe in the Himalayan-Hengduan Mountains, as well as in the Mediterranean region, west-central Asia and eastern Asia. It seems that it probably occurred very early in Hyoscyameae evolution, before the uplift of the Himalayan-Hengduan Mountains. The Himalayan orogeny might have played a minor role in the polyploid evolution of plants in this tribe. (c) 2005 The Linnean Society of London. Botanical Journal of the Linnean Society.
关键词Chromosome Base Number Interphase Nuclei Karyotype Prophase Chromosome
学科领域Plant Sciences
收录类别SCI
语种英语
WOS研究方向Plant Sciences
WOS类目Plant Sciences
WOS记录号WOS:000228617000008
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/2765
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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GB/T 7714
Tu, TY,Sun, H,Gu, ZJ,et al. Cytological studies on the Sino-Himalayan endemic Anisodus and four related genera from the tribe Hyoscyameae (Solanaceae) and their systematic and evolutionary implications[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2005,147(4):457-468.
APA Tu, TY,Sun, H,Gu, ZJ,&Yue, JP.(2005).Cytological studies on the Sino-Himalayan endemic Anisodus and four related genera from the tribe Hyoscyameae (Solanaceae) and their systematic and evolutionary implications.BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,147(4),457-468.
MLA Tu, TY,et al."Cytological studies on the Sino-Himalayan endemic Anisodus and four related genera from the tribe Hyoscyameae (Solanaceae) and their systematic and evolutionary implications".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 147.4(2005):457-468.
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