| Hg2+对蒜鳞茎生长的毒害效应 |
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| 引用本文： | 尤文鹏,施国新,丁小余,杨顶田,解凯彬,常福辰,宋东杰,赵春.Hg2+对蒜鳞茎生长的毒害效应[J].南京师大学报,2000,23(2). |
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| 作者姓名： | 尤文鹏 施国新 丁小余 杨顶田 解凯彬 常福辰 宋东杰 赵春 |
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| 作者单位： | 南京师范大学生命科学学院!南京，210097，南京师范大学生命科学学院!南京，210097，南京师范大学生命科学学院!南京，210097，南京师范大学生命科学学院!南京，210097，南京师范大学生命科学学院!南京，210097，南京师范大学生命科学学院!南京，210097，南京师范大学生命科学学院!南京，210 |
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| 基金项目： | 国家自然科学基金! (39770 0 46 )，江苏省自然科学基金! (BK9710 7) |
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| 摘 要： | 蒜鳞茎在不同浓度 Hg2 的水溶液中培养 ,随着 Hg2 浓度升高或处理时间的延长 ,根的生长速率递减 ,30 0 mg/L组 4 d后几近停止 ;根尖细胞有丝分裂指数下降 ,分裂异常比率增高 ;可溶性糖和蛋白含量下降 ;叶绿素含量也出现明显下降趋势 ,叶绿素 a比叶绿素 b下降幅度更大 ;过氧化物酶活性在低浓度范围内 (50～ 2 0 0 mg/L )高于对照组 ,但高浓度 (30 0 mg/L )时或低浓度长时间处理时 ,其活性下降明显 .Hg2 对蒜瓣有极强的毒害效应 .
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| 关 键 词： | 蒜 Hg~(2 ) 有丝分裂 可溶性糖和蛋白 叶绿素 过氧化物酶 |
Toxication of Hg2+ Pollution on Garlic |
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| YOU Wen-peng,SHI Guo-xin,DING Xiao-yu,YANG Ding-tian,XIE Kai-bin,CHANG Fu-chen,SONG Dong-jie,ZHAO Chun.Toxication of Hg2+ Pollution on Garlic[J].Journal of Nanjing Normal University(Natural Science Edition),2000,23(2). |
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| Authors: | YOU Wen-peng SHI Guo-xin DING Xiao-yu YANG Ding-tian XIE Kai-bin CHANG Fu-chen SONG Dong-jie ZHAO Chun |
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| Abstract: | The effects of Hg 2 solution of different concentrations on garlic were studied.With the increase of Hg 2 concentration or treatment time,the rate of root growth decreased successively or stopped,the mitosis index of root tip cells reduced,the number of anomalous dividing cells rose, soluble protein and sugar decreased,the content of chlorophyll reduced too,what's more,the contents of chlorophyll a decreased faster than the content of chlorophyll b,the activity of peroxidase increased under the treatment with low concentration of Hg 2 in short peroid,but decreased with high concentration of Hg 2 or with time's going on..Hg 2 pollution had very toxic influence on garlic. |
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| Keywords: | garlic Hg 2 mitosis soluble protein and sugar chlorophyll peroxidase |
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