| 药蒲公英减数分裂异常行为探讨 |
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| 引用本文： | 吴玉香,高建平,赵晓明. 药蒲公英减数分裂异常行为探讨[J]. 生物学杂志, 2004, 21(4): 29-30 |
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| 作者姓名： | 吴玉香 高建平 赵晓明 |
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| 作者单位： | 山西农业大学农学院,山西,太谷,030801 |
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| 摘 要： | 对药蒲公英减数分裂各期进行了观察，研究得出药蒲公英花蕾直径大小与花粉母细胞减数分裂各期之间的关系(花蕾直径在2-7mm时为减数分裂期)。并发现药蒲公英减数分裂中出现许多异常行为。如后期桥和落后染色体；药蒲公英花粉粒空瘪，这些异常行为的原因是减数分裂过程中有倒位和重复缺失等染色体结构变异出现以至形成双着丝点染色体。减数分裂过程的异常行为也说明药蒲公英是多倍体。
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| 关 键 词： | 药蒲公英 减数分裂 异常行为 |
| 文章编号： | 1008-9632(2004)04-0029-02 |
| 修稿时间： | 2004-02-03 |
Discussions of abnormal behavior for meiosis of T.Officinale F.H.Wigg |
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| WU Yu-xiang,GAO Jian-ping,ZHAO Xiao-ming. Discussions of abnormal behavior for meiosis of T.Officinale F.H.Wigg[J]. Journal of Biology, 2004, 21(4): 29-30 |
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| Authors: | WU Yu-xiang GAO Jian-ping ZHAO Xiao-ming |
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| Abstract: | The meiosis period and meiotic chromosome behavior of pollen mother cells of T.Officinale F.H.Wigg were studied and the relation ship between several period of meiosis and diameter of floral bud was described.The period of meiosis was happened between 2mm and 7mm of diameter of floral bud by observation.The meiosis of pollen mother cells of T.Officinale F.H.Wigg was abnormal.In anaphase of meiosis,many lagging chromosomes,bridges and double-bridges were formed.The reason for these abnormal behavior might be that the structure variance of chromosome such as inversion,deficiency and duplication were happened and dicentric chromosome was appeared.This also showed that T.OfficinaleF.H.Wigg was polyploid. |
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| Keywords: | T.OfficinaleF.H.Wigg meiosis abnormal behavior |
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