| 紫茉莉染色体数目及核型分析 |
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| 引用本文： | 时丽冉,高汝勇,李会芬,李慧凝. 紫茉莉染色体数目及核型分析[J]. 草业科学, 2010, 27(1): 52-55. DOI: 10.3969/j.issn.1001-0629.2010.01.011 |
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| 作者姓名： | 时丽冉 高汝勇 李会芬 李慧凝 |
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| 作者单位： | 衡水学院生命科学系,河北,衡水,053000;衡水学院生命科学系,河北,衡水,053000;衡水学院生命科学系,河北,衡水,053000;衡水学院生命科学系,河北,衡水,053000 |
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| 摘 要： | 紫茉莉Mirabilis jalapa为多年生草本花卉,繁殖能力强,被确定为外来入侵植物。用低温处理法处理紫茉莉根尖12h,经卡诺氏液固定、酸解去壁、改良品红染色等步骤,对紫茉莉进行了染色体数目的确定,对其核型进行了分析。试验结果表明,紫茉莉体细胞染色体数目为2n=56,核型公式为K=2n=2x=28m+22sm+4st+2m(sat),核型分类属于"2B"型。染色体长度变异范围为2.33～0.78μm,属小型染色体,不对称系数63.8%,属于较不对称类型。这为紫茉莉的防控提供了细胞学依据。
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| 关 键 词： | 紫茉莉 入侵植物 染色体数目 核型 |
The chromosome number and karyotype analysis of Mirabilis jalapa |
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| SHI Li-ran,GAO Ru-yong,LI Hui-fen,LI Hui-ning. The chromosome number and karyotype analysis of Mirabilis jalapa[J]. Pratacultural Science, 2010, 27(1): 52-55. DOI: 10.3969/j.issn.1001-0629.2010.01.011 |
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| Authors: | SHI Li-ran GAO Ru-yong LI Hui-fen LI Hui-ning |
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| Affiliation: | Life Science Department;Hengshui College;Hebei;Hengshui 053000;China |
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| Abstract: | Mirabilis jalapa was perennial herbal flower with powerful capacity of reproduction as a invasive plant. This paper analyzed the chromosome number and karyotype of M. jalapa with treatments such as 12 h low temperature pretreatment of root tip,fixation with Carnoys solution,cell wall acid hydrolysis and staining. The results showed that the somatic chromosome number of the M. jalapa was 2n=56,and karyotype formula was K=2n=2x=28m+22sm+4st+2m(sat),which belonged to 2B type. The variation range of the chromos... |
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| Keywords: | Mirabilis jalapa invasive plant chromosome number karyotype |
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