| 加拿大一枝黄花的核型分析及B染色体初报 |
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| 引用本文： | 蔡华,王荣富.加拿大一枝黄花的核型分析及B染色体初报[J].激光生物学报,2006,15(3):245-248. |
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| 作者姓名： | 蔡华 王荣富 |
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| 作者单位： | 1. 安徽农业大学生命科学学院,安徽,合肥,230036;安徽科技学院生命科学学院,安徽,凤阳,233100
2. 安徽农业大学生命科学学院,安徽,合肥,230036 |
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| 基金项目： | 安徽省自然科学基金;安徽省教育厅自然科学基金;安徽科技学院校科研和教改项目 |
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| 摘 要： | 对安徽蚌埠地区外来植物加拿大一枝黄花的染色体核型进行了分析。结果如下:该入侵种的染色体数为2n=50,各染色体间形态差异不明显,均为中着丝粒或近中着丝粒染色体,最长与最短染色体相对长度比为1.72,全套染色体未见随体,核型公式为2 n=50=38 m 12 sm 6 B s,核型类型为较对称的2A型。首次报道了存在于体细胞中的异于常染色体的6个B染色体,这些B染色体在不同细胞中保持恒定的数目,并讨论了B染色体的存在与加拿大一枝黄花在新生境中具有入侵性之间的关系。
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| 关 键 词： | 加拿大一枝黄花 入侵性 核型分析 B染色体 |
| 文章编号： | 1007-7146（2006）03-0245-04 |
| 收稿时间： | 2006-02-11 |
| 修稿时间： | 2006-03-20 |
Karyotype Analysis of Solidago canadensis L. and Preliminary Study on its B-chromosomes |
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| CAI Hua,WANG Rong-fu.Karyotype Analysis of Solidago canadensis L. and Preliminary Study on its B-chromosomes[J].ACTA Laser Biology Sinica,2006,15(3):245-248. |
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| Authors: | CAI Hua WANG Rong-fu |
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| Institution: | 1. Life Science College, Anhui Agricultural University, Hefei 230036, Anhui, China; 2. Life Science College, Anhui Science and Technology University, Fengyang 233100, Anhui, China |
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| Abstract: | The karyotype analysis of exotic plant Solidago canadensis L.in Bangbu,Anhui province was reported.The results are as follows :the number of chromosomes is 2 n = 50,morphological variations is not obvious to the 25 pairs of chromosomes,with all of them are median and submedian centromeric chromosomes,relative length ratio between the longest chromosome and the shortest one is 1.72,there is no SAT in 50 chromosomes,the karyotype formula is 2 n = 50 = 38 m 12 sm 6 Bs,the karyotype type is 2 A.6 B-chromosomes in somatic cells of Solidago canadensis L.were firstly reported in this study,the number of B-chromosomes is the same in different cells,the relation between B-chromosome and invisibility of Solidago canadensis L.in the new habitat was discussed too. |
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| Keywords: | Solidago canadensis L invisibility karyotype analysis B-chromosome |
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