| Ecotoxicity of Cadmium to Maize and Soybean Seedling in Black Soil |
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| 作者姓名： | CAO Huicong WANG Jinda ZHANG Xuelin |
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| 作者单位： | 1.Northeast Institute of Geography and Agroecology，Chinese Academy of Sciences，Changchun 130012，China;2.Graduate University of Chinese Academy of Sciences，Beijing 100049，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | Ecotoxicity and bioavailability of cadmium(Cd)to the maize(Zea mays L.)and the soybean(Glycine max(L.)Merr.)were investigated by acute toxicity experiment in the laboratory with black soil.Ecotoxicity and bioavailability of Cd were quantified by calculating the median effective concentration(EC50)and bioaccumulation factor(BAF).The measurement endpoints used were seed germination and seedling growth(shoot and root).The results showed that concentrations of Cd in the soil had adverse effect on the growth of roots and shoots.Seed germination was not the sensitive indicator for the ecotoxicity of Cd in the soil,while the growth of roots was the most sensitive measurement endpoint.Absorbability and transport of Cd in plants depended on the test crop species and Cd concentrations in the soil.The maize retains more Cd in its roots,while the soybean transports more Cd to the shoots from roots.
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| 关 键 词： | 大豆 镉 生物利用度 黑土 毒性 |
| 文章编号： | 10.1007/s11769-007-0270-Z |
| 收稿时间： | 5 June 2006 |
| 修稿时间： | 2006-06-05 |
Ecotoxicity of cadmium to maize and soybean seedling in black soil |
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| CAO Huicong,,WANG Jinda,ZHANG Xuelin.Ecotoxicity of Cadmium to Maize and Soybean Seedling in Black Soil[J].Chinese Geographical Science,2007,17(3):270-274. |
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| Authors: | Cao Huicong Wang Jinda Zhang Xuelin |
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| Institution: | 1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Ecotoxicity and bioavailability of cadmium(Cd)to the maize(Zea mays L.)and the soybean(Glycine max(L.)Merr.)were investigated by acute toxicity experiment in the laboratory with black soil.Ecotoxicity and bioavailability of Cd were quantified by calculating the median effective concentration(EC50)and bioaccumulation factor(BAF).The measurement endpoints used were seed germination and seedling growth(shoot and root).The results showed that concentrations of Cd in the soil had adverse effect on the growth of roots and shoots.Seed germination was not the sensitive indicator for the ecotoxicity of Cd in the soil,while the growth of roots was the most sensitive measurement endpoint.Absorbability and transport of Cd in plants depended on the test crop species and Cd concentrations in the soil.The maize retains more Cd in its roots,while the soybean transports more Cd to the shoots from roots. |
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| Keywords: | cadmium maize soybean ecotoxicity black soil |
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