| 麦蓝菜的花粉母细胞减数分裂及核型分析 |
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| 引用本文： | 王俊杰,马玉涛,惠荣奎,刘天雄,刘焰.麦蓝菜的花粉母细胞减数分裂及核型分析[J].中国野生植物资源,2011,30(4):53-56,69. |
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| 作者姓名： | 王俊杰 马玉涛 惠荣奎 刘天雄 刘焰 |
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| 作者单位： | 华中农业大学药用植物研究所,湖北武汉,430070 |
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| 基金项目： | 华中农业大学校基金项目资助(52207-01026) |
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| 摘 要： | 采用压片法,对麦蓝菜的花粉母细胞减数分裂及体细胞核型进行了研究。结果表明,麦蓝菜的绝大多数花粉母细胞减数分裂中染色体的行为正常,在终变期同源染色体配对后可形成15个二价体;在少数花粉母细胞减数分裂中观察到落后染色体、染色体桥等异常行为;其减数分裂为同时型,其花粉粒育性为88.04%。麦蓝菜的染色体数目为2n=2X=30,核型公式为K(2n)=2X=30=22m(2SAT)+8 sm,染色体相对长度组成为2n=16M2+14M1,其核型为"1A"型。
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| 关 键 词： | 麦蓝菜 减数分裂 核型 |
Karyotype Analysis and Meiotic Observations of Pollen Mother Cells in Vaccaria segetalis(Neck.) Garcke |
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| Wang Junjie
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Ma Yutao
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Hui Rongkui
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Liu Tianxiong
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Liu Yan.Karyotype Analysis and Meiotic Observations of Pollen Mother Cells in Vaccaria segetalis(Neck.) Garcke[J].Chinese Wild Plant Resources,2011,30(4):53-56,69. |
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| Authors: | Wang Junjie Ma Yutao Hui Rongkui Liu Tianxiong Liu Yan |
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| Institution: | Wang Junjie,Ma Yutao,Hui Rongkui,Liu Tianxiong,Liu Yan(Institute of Medicinal Plant,Huazhong Agricultural University,Wuhan 430070,China) |
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| Abstract: | The meiosis of pollen mother cells and karyotype analyzed for the Vaccaria segetalis(Neck.) Garcke by applying squash method.The result showed that chromosomes of most pollen mother cells were paired as 15 bivalents at diakinesis.In a few(minority)pollen mother cells Lagging chromosome and chromosomal bridge were founded during meiosis.The meiotic division belongs to the simultaneous type,and the stainability of the pollen grains was 88.04%.The chromosome number was 2n=30 and karyotype formula was K(2n)=2X=... |
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| Keywords: | Vaccaria segetalis(Neck ) Garcke meiosis karyotype |
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