| 野桑蚕减数分裂的染色体研究 |
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| 引用本文： | 常平安,宋方洲,刘运强.野桑蚕减数分裂的染色体研究[J].蚕业科学,2001,27(3):181-184. |
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| 作者姓名： | 常平安 宋方洲 刘运强 |
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| 作者单位： | 西南农业大学蚕桑丝绸学院农业部蚕桑学重点开放实验室, |
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| 基金项目： | 国家自然科学基金资助项目 ( 39770 5 74),教育部留学回国人员科研启动基金资助项目,教育部高校骨干教师计划项目 |
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| 摘 要： | 对中国和日本野桑蚕染色体进行了观察、研究 ,比较了中国野桑蚕卵母细胞和精母细胞减数分裂前期Ⅰ染色体的形态行为 ,发现这些差异与雌雄蚕染色体是否发生交叉是一致的 ;同时在两个地区的雌蚕粗线期均发现了末端分开呈不对称的“Y”字二价体或提前分离的二价染色体 ,对其形成机理进行了探讨
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| 关 键 词： | 野桑蚕 染色体 减数分裂 |
| 修稿时间： | 2000年12月4日 |
Studies on the Meiotic Chromosomes of Mulberry Wild Silkworm(Bombyx mandarina) |
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| Chang Ping''''an,Song Fangzhou,Liu Yunqiang.Studies on the Meiotic Chromosomes of Mulberry Wild Silkworm(Bombyx mandarina)[J].Acta Sericologica Sinica,2001,27(3):181-184. |
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| Authors: | Chang Ping'an Song Fangzhou Liu Yunqiang |
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| Abstract: | Chromosomes of mulberry wild silkworm( Bombyx mandarina )from China and Japan were studied.Comparison of chromosomal morphological characters and behaviors of Bombyx mandarina in China during the meiotic metaphage Ⅰ between oocytes and spermatocytes was made.The findings proved that the difference between oocytes and spermatocytes is consistent with happening of chiasma in female and not in male."Y" bifurcated ZW bivalent or advanced segregated bivalents was observed at pachytene stage in occytes of the mulberry wild silkworm from two countries.The mechanism was discussed too. |
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| Keywords: | Mulberry wild silkworm(Bombyx mandarina) Chromosome Meiosis |
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