| 农作物对Cd毒害的耐性机理探讨 |
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| 引用本文： | 杨居荣,贺建群.农作物对Cd毒害的耐性机理探讨[J].应用生态学报,1995,6(1):87-91. |
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| 作者姓名： | 杨居荣 贺建群 |
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| 作者单位： | 北京师范大学环境科学研究所 |
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| 摘 要： | 对生长在Ｃｄ污染条件下的８种作物体内Ｃｄ的存在形态分析表明，作物的耐Ｃｄ性与Ｃｄ的形态分布密切相关，在耐性作物体内，蛋白质（多肽）结合Ｃｄ量的比例低于非耐性作物；有机酸盐和一代磷酸盐态Ｃｄ的比例增加；分离得到Ｃｄ诱导蛋白?其中束缚了一定量的Ｃｄ，限制了Ｃｄ以自由态存在，耐性较低的作物本内，大分子量的蛋白质中富Ｃｄ量较高。
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| 关 键 词： | 耐性机理 镉 作物 污染 |
Tolerance mechanism of crops to Cd pollution |
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| Yang Jurong, He Jianqun, Zhang Guoxiang and Mao Xianqiang.Tolerance mechanism of crops to Cd pollution[J].Chinese Journal of Applied Ecology,1995,6(1):87-91. |
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| Authors: | Yang Jurong He Jianqun Zhang Guoxiang and Mao Xianqiang |
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| Abstract: | Studies on Cd forms in 8 kinds of crops under Cd pollution show that the Cd tolerance ofcrops is closely related to the distribution of Cd forms. In Cd-tolerant crops, the percentage of Cd combined with protein (polypeptide) is higher, organic Cd and Cd hydrophos-phare are more, and Cd-induced protein contains definite amounts of bound Cd which limits the existence of free Cd. In crops with lower Cd tolerance, big molecular protein isrich in Cd. |
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| Keywords: | Cd Tolerance mechanism Crops |
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