秋水仙素对大蒜根尖细胞有丝分裂的影响
Journal of Beijing University of Agriculture(2009)
Abstract
用0.1%和0.01%浓度的秋水仙素溶液分别处理大蒜根尖6,12,24,48,72,96h,大蒜根尖细胞有丝分裂指数呈现上升趋势,以0.01%的秋水仙素处理大蒜根尖24h达到最高值14.29%,是对照的6.8倍,之后随处理时间延长,有丝分裂指数下降。0.1%浓度组数值一直低于0.01%浓度组。结果表明秋水仙素在一定浓度和一定时间范围内可以促进大蒜根尖细胞有丝分裂,而超过一定浓度或处理时间过长,将会抑制有丝分裂。
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Key words
mitotic index,root tips,Allium sativum,colchicines
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