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Karyomorphology of Maianthemum sensu lato (Polygonatae, Ruscaceae)
Meng, Y; Nie, ZL; Yang, YP; Gu, ZJ
AbstractWe 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.
KeywordChromosome Karyotype Maianthemum Polygonatae Ruscaceae
Subject AreaPlant Sciences
Indexed BySCI
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000229458200010
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
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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