Cytological studies on the Sino-Himalayan endemic Anisodus and four related genera from the tribe Hyoscyameae (Solanaceae) and their systematic and evolutionary implications

	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
通讯作者	hsun@mail.kib.ac.cn
	2005-04-01
发表期刊	BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
ISSN	0024-4074
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记录号	WOS:000228617000008
引用统计
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
推荐引用方式 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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