Cytotaxonomy of Allium (Amaryllidaceae) subgenera Cyathophora and Amerallium sect. Bromatorrhiza

doi:10.11646/phytotaxa.331.2.3

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	Cytotaxonomy of Allium (Amaryllidaceae) subgenera Cyathophora and Amerallium sect. Bromatorrhiza
	Li, Min-Jie 1,2; Guo, Xian-Lin 2; Li, Juan 2; Zhou, Song-Dong 2; Liu, Qing 1; He, Xing-Jin 2
刊名	PHYTOTAXA
	2017-12-12
卷号	331 期号:2 页码:185-198
关键词	karyotype evolutionary history polyploidy Qinghai-Tibetan Plateau
ISSN号	1179-3155
DOI	10.11646/phytotaxa.331.2.3
产权排序	2
文献子类	Article
英文摘要	In the present study, we examined the karyotype data of subg. Cyathophora and sect. Bromatorrhiza, to determine some disputed karyotypes (e.g., A. spicatum and A. fasciculatum), and further to estimate the karyotype evolution along their phylogenetic frameworks. Our results revealed a fairly stable basic chromosome number (x = 8) in subg. Cyathophora, and we therefore revised x = 8 as the basic chromosome number of A. spicatum, rather than x = 10 mostly due to misidentifications concerning A. fasciculatum. The karyotype asymmetry analyses for subg. Cyathophora indicated that, the karyotype evolution for diploid species showing a high karyotype similarity was mainly due to intrachromosomal changes, while the interchromosomal changes were linked to the evolution of tetraploid populations. However, indeed different dysploid basic chromosome numbers (x = 7, 10, 11) and greatly different karyotype patterns occurred in sect. Bromatorrhiza, corresponding to the subsections revealed by molecular evidence. The combined evidence suggested that species with x = 11 compose a segmental allotriploid complex. It was also indicated that karyotype pattern of polyploids usually is closely related with their diploid progenitors.
学科主题	Plant Sciences
URL标识	查看原文
WOS关键词	QINGHAI-TIBETAN PLATEAU ; B-CHROMOSOMES ; SEED-SIZE ; POLYPLOIDY ; EVOLUTION ; PLANTS ; TAXA ; MECHANISMS ; PHYLOGENY ; DIVERSITY
WOS研究方向	Plant Sciences
语种	英语
出版者	MAGNOLIA PRESS
WOS记录号	WOS:000417750200003
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29891]
专题	生物多样性与生态系统服务领域_生态研究
通讯作者	He, Xing-Jin
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China 2.Sichuan Univ, Coll Life Sci, Minist Educ, Key Lab Bioresources & Ecoenvironm, Chengdu 610065, Sichuan, Peoples R China;
推荐引用方式 GB/T 7714	Li, Min-Jie,Guo, Xian-Lin,Li, Juan,et al. Cytotaxonomy of Allium (Amaryllidaceae) subgenera Cyathophora and Amerallium sect. Bromatorrhiza[J]. PHYTOTAXA,2017,331(2):185-198.
APA	Li, Min-Jie,Guo, Xian-Lin,Li, Juan,Zhou, Song-Dong,Liu, Qing,&He, Xing-Jin.(2017).Cytotaxonomy of Allium (Amaryllidaceae) subgenera Cyathophora and Amerallium sect. Bromatorrhiza.PHYTOTAXA,331(2),185-198.
MLA	Li, Min-Jie,et al."Cytotaxonomy of Allium (Amaryllidaceae) subgenera Cyathophora and Amerallium sect. Bromatorrhiza".PHYTOTAXA 331.2(2017):185-198.