Observation on meiotic behavior in three Mahonia species, with special reference to the intergeneric relationship of Mahonia and Berberis

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	Observation on meiotic behavior in three Mahonia species, with special reference to the intergeneric relationship of Mahonia and Berberis
	Dang, Hai-Shan ; Zhang Yan-Jun ; Meng, Ai-Ping ; Li, Jian-Qiang ; Li, Xin-Wei
刊名	CARYOLOGIA
	2006-10-01
卷号	59 期号:4 页码:305-311
关键词	abnormality rate of cells Berberis chromosome configuration Mahonia meiotic behavior phylogeny pollen fertility rate
ISSN号	0008-7114
英文摘要	Cytological characters in meiosis of three Mahonia species-Mahonia fortunei, M. bealei and M. polydonta were investigated using the method of wall degradation and hypotonic treatment for chromosomal preparations. Chromosome numbers of the three species were all 2n = 2x = 28; those of M. fortunei and M. polydonta represent the first report. The three species at metaphase I possessed the same configuration of 14II, however, the secondary association was also observed. During anaphase I, 1.5% of the cells of M. fortunei had lagging chromosomes and chromosome bridges. During anaphase II, lagging chromosomes, chromosome bridges and asynchronism in second division were observed, with abnormality rate in M. fortunei being about 9.5%. The rate of fertile pollen grains of the three species amounted to more than 90%, which was consistent with the cell abnormality rate at anaphase II. The results indicate that, overall, meiotic process of the three species is normal, which is in line with the high pollen fertility rate and high seed yield of the three species. Our results support the view that Mahonia and Berberis represent a sister group in phylogenetic evolution, and that they should be treated as two distinct genera.
WOS研究方向	Plant Sciences ; Genetics & Heredity
语种	英语
出版者	UNIV FLORENCE BOTANY INST
WOS记录号	WOS:000244626300002
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/1165]
专题	中国科学院武汉植物园
通讯作者	Li, Jian-Qiang
作者单位	1.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Dept Taxon & Systemat, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Dang, Hai-Shan,Zhang Yan-Jun,Meng, Ai-Ping,et al. Observation on meiotic behavior in three Mahonia species, with special reference to the intergeneric relationship of Mahonia and Berberis[J]. CARYOLOGIA,2006,59(4):305-311.
APA	Dang, Hai-Shan,Zhang Yan-Jun,Meng, Ai-Ping,Li, Jian-Qiang,&Li, Xin-Wei.(2006).Observation on meiotic behavior in three Mahonia species, with special reference to the intergeneric relationship of Mahonia and Berberis.CARYOLOGIA,59(4),305-311.
MLA	Dang, Hai-Shan,et al."Observation on meiotic behavior in three Mahonia species, with special reference to the intergeneric relationship of Mahonia and Berberis".CARYOLOGIA 59.4(2006):305-311.