| 桔梗染色体数目与减数分裂的细胞遗传学观察 |
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| 引用本文： | 杨福红,鲍国军,周海燕,张岩竹. 桔梗染色体数目与减数分裂的细胞遗传学观察[J]. 甘肃农业科技, 2016, 0(10): 14-16. DOI: 10.3969/j.issn.1001-1463.2016.10.005 |
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| 作者姓名： | 杨福红 鲍国军 周海燕 张岩竹 |
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| 作者单位： | 甘肃省平凉市农业科学院,甘肃 平凉,744000 |
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| 基金项目： | 山西省科技攻关项目(20130311004-1)。 |
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| 摘 要： | 分别以桔梗根尖和花粉为材料,通过压片法确定桔梗的染色体数目,观察花粉母细胞减数分裂行为。结果表明,桔梗的染色体数目为2n=18,染色体基数x=9。桔梗花粉母细胞减数分裂过程中,绝大多数细胞分裂正常,极个别细胞在后期Ⅰ出现染色体桥,后期Ⅱ出现不均等分离等现象。
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| 关 键 词： | 桔梗 染色体 减数分裂 花粉母细胞 |
| 收稿时间： | 2016-05-24 |
Observation of Chromosome Number and Cytology Observation on Meiosis of Platycodon grandiflorum |
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| YANG Fuhong,BAO Guojun,ZHOU Haiyan,ZHANG Yanzhu. Observation of Chromosome Number and Cytology Observation on Meiosis of Platycodon grandiflorum[J]. Gansu Agricultural Science and Technology, 2016, 0(10): 14-16. DOI: 10.3969/j.issn.1001-1463.2016.10.005 |
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| Authors: | YANG Fuhong BAO Guojun ZHOU Haiyan ZHANG Yanzhu |
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| Abstract: | In this paper,The chromosome number ofPlatycodongrandiflorumare investigated with conventional plant root tip squashing method and studied on its meiosis course of pollen mother cell. The result shows that the chromosome number is 18 and its basic chromosome number is 9. In the meiosis course of pollen mother cell onPlatycodongrandiflorum,the most of cell division is normal,but we found some special Phenomenon in a small number of cells,such as chromosome bridge in anaphaseⅠand unequal separation of chromosome in metaphaseⅡ,and so on. |
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| Keywords: | Platycodon grandiflorum A.DC. Chromosome Meiosis Pollen mother cell |
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