| 二乔刺槐染色体核型分析及有丝分裂过程观察 |
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| 引用本文： | 黄建全,朱延林,张娜.二乔刺槐染色体核型分析及有丝分裂过程观察[J].北方园艺,2009(9). |
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| 作者姓名： | 黄建全 朱延林 张娜 |
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| 作者单位： | 天津市林业果树研究所,天津,300112;河南省林业科学研究院,河南,郑州,450003 |
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| 基金项目： | 天津市农业科学院院长基金资助项目 |
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| 摘 要： | 利用茎尖压片法对二乔刺槐染色体的数目进行了统计,并进行了核型分析,观察了细胞有丝分裂过程.结果表明:二乔刺槐单倍体染色体数为2n=22,核型公式为2n=2x=22=4m+10sm+2st+6t;属于"3B"型;核型不对称系数为72.14%.二乔刺槐有丝分裂前期染色体逐渐浓缩变粗,中期染色体清晰可见,后期染色单体发生分离并向相反的两极移动,末期形成新的子核.
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| 关 键 词： | 二乔刺槐 染色体 核型 |
Karyotype Analysis and Mitotic Division of Robinia pseudonacacia |
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| HUANG Jian-quan,ZHU Yan-lin,ZHANG Na.Karyotype Analysis and Mitotic Division of Robinia pseudonacacia[J].Northern Horticulture,2009(9). |
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| Authors: | HUANG Jian-quan ZHU Yan-lin ZHANG Na |
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| Institution: | 1.Tianjin Research Institute of Forestry and Pomology;Tianjin 300112;China;2.Henan Academy of Forestry;Zhengzhou;Henan 450003;China |
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| Abstract: | The number of chromosome of the Robinia pseudonacacia was counted by stem tip squash method,and karyotype analysis of Robinia pseudonacacia was carried on,and observed the mitosis of Robinia Pseudonacacia.The results showed that the number of chromosome of the Robinia pseudonacacia was 2n=22,and its karyotype formula was 2n=2x=22=4m+10sm+2st+6t,belonging to 3B type,and ratio of asymmetric karyotype(As.K%) being 72.14%.The chromosomes gradually shortened and thickened during prophase,and at metaphase the chr... |
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| Keywords: | Robinia pseudonacacia Chromosome Analysis of karyotype |
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