| 3种果树幼苗对镉胁迫的响应 |
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| 引用本文： | 唐雪东,刘晓嘉,窦森,李亚东.3种果树幼苗对镉胁迫的响应[J].东北林业大学学报,2009,37(9). |
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| 作者姓名： | 唐雪东 刘晓嘉 窦森 李亚东 |
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| 作者单位： | 吉林农业大学,长春,130118 |
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| 基金项目： | 吉林省科技厅重点项目，农业部"九四八"重点项目，国家自然科学基金，高校博士点基金(20040193002)项目 |
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| 摘 要： | 采用盆栽法系统地研究了梨(Pyrus ussuriensis Max.)、李(Prunus salicina Lindl.)、杏(Armeniaca vulgaris Lam.)幼苗在土壤重金属镉胁迫下的生理生化反应.结果表明:3个树种随着重金属质量分数和胁迫时间的增加,各树种叶片的叶绿素质量分数降低,其中杏树的降幅最大,李树居中,梨树最小;相对电导率有逐渐升高的趋势;叶片MDA质量摩尔浓度均出现先降低后升高的趋势;POD活性随土壤中镉质量分数的增加先升高后降低;脯氨酸质量分数随着重金属胁迫时间的延长有不断积累的趋势.综合评定3树种对土壤镉的抗性为梨树>李树>杏树.
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| 关 键 词： | 观赏果树 镉胁迫 生理响应 |
Responses of Three Species of Fruit Tree Seedlings to Cadmium Stress |
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| Tang Xuedong,Liu Xiaojia,Dou Sen,Li Yadong.Responses of Three Species of Fruit Tree Seedlings to Cadmium Stress[J].Journal of Northeast Forestry University,2009,37(9). |
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| Authors: | Tang Xuedong Liu Xiaojia Dou Sen Li Yadong |
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| Institution: | Tang Xuedong,Liu Xiaojia,Dou Sen,Li Yadong(College of Horticulture,Jilin Agricultural University,Changchun 130118,P.R.China) |
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| Abstract: | The physiological and biochemical responses of pear(Pyrus ussuriensis Max.),plum(Prunus salicina Lindl.)and apricot(Armeniaca vulgaris Lam.)potted seedlings were studied under cadmium stress in a greenhouse.Results showed that,with cadmium concentration and stress time increasing,the chlorophyll content in the leaves of the three fruit tree species declined,and the decreasing range was in the order of apricot,plum,and pear from high to low;relative conductivity of the leaves showed an increasing tendency;MD... |
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| Keywords: | Ornamental fruit trees Cadmium stress Physiological responses |
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