| 低温预处理对大蒜根尖细胞有丝分裂的影响 |
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| 引用本文： | 高汝勇.低温预处理对大蒜根尖细胞有丝分裂的影响[J].农业机械化与电气化,2009(1):3-5. |
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| 作者姓名： | 高汝勇 |
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| 作者单位： | 河北省衡水学院生命科学系; |
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| 摘 要： | 以大蒜根尖为材料，用常规压片方法制备染色体标本，研究不同低温预处理时间对根尖细胞有丝分裂的影响。结果表明：低温预处理12—42h能提高有丝分裂指数和中期分裂指数；6h和48h低温预处理会降低有丝分裂指数和中期分裂指数；低温预处理24～30h有利于根尖细胞的有丝分裂。
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| 关 键 词： | 低温预处理 有丝分裂 试验 大蒜 分裂指数 中期分裂指数 |
Effects of Low-temperature Pretreatment on Mitosis of Garlic Root-tip Cells |
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| Authors: | GAO Ruyong |
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| Institution: | Department of Life Sciences;Hebei Hengshui College;Hengshui Hebei 053000;China |
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| Abstract: | The chromosome specimens of garlic root-tip were made with traditional squashing method. The effects of different low-temperature pretreatment time on mitosis of root-tip cells were studied. The results showed that： the mitotic index and metaphase index increased with 12~42 hours of low-temperature pretreatment and decreased with 6 hours and 48 hours of that. Pretreatment for 24~30 hours was optimum for mitosis of root-tip cells. |
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| Keywords: | low-temperature pretreatment mitosis test garlic mitotic index metaphase index |
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