Karyomorphology of Maianthemum sensu lato (Polygonatae, Ruscaceae)

doi:10.1007/s10265-005-0205-7

	Karyomorphology of Maianthemum sensu lato (Polygonatae, Ruscaceae)
	Meng, Y ; Nie, ZL ; Yang, YP; Gu, ZJ
通讯作者	guzhijian@mail.kib.ac.cn
	2005-04-01
发表期刊	JOURNAL OF PLANT RESEARCH
ISSN	0918-9440
卷号	118 期号:2 页码:155-162
摘要	We report results of karyotype analyses using nine species of Maianthemum from China. The species, except M. atropurpureum (with 2n = 72), had 2n = 36, and the results support the earlier suggestion that Maianthemum has x = 18 with 2n = 36 in most species. ne species examined, however, showed marked differences in karyotype, particularly in the numbers of metacentric, submetacentric, and acrocentric chromosomes as well as in the number of satellites. In addition, we distinguished three different modes based on the number of clear gaps in chromosome length variation: unimodal, bimodal, and trimodal. The unimodal variation (with no gap) was found in M. dahuricum and M. atropurpureum, the bimodal variation (with one gap) in M. tatsienense, and the trimodal variation (with two gaps) in M. bifolium, M. forrestii, M. japonicum, M. henryi, M. purpureum, and M. lichiangense. In the trimodal variation, the positions of the two gaps may differ from species to species. In addition, the frequency of acrocentric chromosomes per complement was generally higher in the trimodal variation than in the unimodal and bimodal variations. Results of our analyses, which had not been clearly presented prior to this, may provide a better understanding of species evolution in the tribe Polygonatae.
关键词	Chromosome Karyotype Maianthemum Polygonatae Ruscaceae
学科领域	Plant Sciences
DOI	10.1007/s10265-005-0205-7
收录类别	SCI
语种	英语
WOS记录号	WOS:000229458200010
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/2607
专题	中国科学院青藏高原研究所昆明部
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	Meng, Y,Nie, ZL,Yang, YP,et al. Karyomorphology of Maianthemum sensu lato (Polygonatae, Ruscaceae)[J]. JOURNAL OF PLANT RESEARCH,2005,118(2):155-162.
APA	Meng, Y,Nie, ZL,Yang, YP,&Gu, ZJ.(2005).Karyomorphology of Maianthemum sensu lato (Polygonatae, Ruscaceae).JOURNAL OF PLANT RESEARCH,118(2),155-162.
MLA	Meng, Y,et al."Karyomorphology of Maianthemum sensu lato (Polygonatae, Ruscaceae)".JOURNAL OF PLANT RESEARCH 118.2(2005):155-162.

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