| 不同品种大白菜苗期吸收积累镉的差异研究 |
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| 引用本文： | 刘志华,伊晓云,王火焰,沈仁芳.不同品种大白菜苗期吸收积累镉的差异研究[J].土壤学报,2008,45(5):987-993. |
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| 作者姓名： | 刘志华 伊晓云 王火焰 沈仁芳 |
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| 作者单位： | 1. 土壤与农业可持续发展国家重点实验室,中国科学科院南京土壤研究所,南京,210008;中国科学院研究生院,北京,100049
2. 土壤与农业可持续发展国家重点实验室,中国科学科院南京土壤研究所,南京,210008 |
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| 基金项目： | 中国科学院知识创新工程项目，国家重点基础研究发展计划(973计划) |
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| 摘 要： | 利用实验室水培模拟轻度镉污染土壤研究了13个大白菜品种苗期吸收积累镉的差异。结果表明,不同品种大白菜地上部和根部的镉含量存在显著差异,其中,603大白菜地上部镉含量较低(104.7 mg kg-1),耐性指数较高,在轻度镉污染土壤上种植603大白菜有利于降低镉污染的人类健康风险。不同大白菜品种在受到Cd胁迫时,其叶绿素含量和组成均有显著差异,为耐性机理研究提供了理论依据。
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| 关 键 词： | 大白菜 苗期 镉 耐性 |
| 收稿时间： | 2007/5/14 0:00:00 |
| 修稿时间： | 2007/11/28 0:00:00 |
Cd ACCUMULATION IN DIFFERENT CHINESE CABBAGE SEEDLINGS UNDER Cd STRESS |
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| Liu Zhihu,Yi Xiaoyun,Wang Huoyan and Shen Renfang.Cd ACCUMULATION IN DIFFERENT CHINESE CABBAGE SEEDLINGS UNDER Cd STRESS[J].Acta Pedologica Sinica,2008,45(5):987-993. |
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| Authors: | Liu Zhihu Yi Xiaoyun Wang Huoyan and Shen Renfang |
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| Institution: | Liu Zhihua1,2 Yi Xiaoyun1,2 Wang Huoyan1 Shen Renfang1 (1State Key Laboratory of Soil , Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China) (2 Graduate University of the Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | A hydroponic experiment was conducted to investigate differences in Cd accumulation in shoots of Chinese cabbage at the seedling stage between 13 cultivars.Results indicate that Cd contents in shoot and root varied sharply with the cultivars,among which,Cabbage 603 had a lower Cd content in shoots(104.7 mg kg-1) and showed a higher Cd tolerance index,suggesting that this cultivar grown in slightly polluted soil posed less risk to food chain.It was also found that contents and composition of chlorophyll also... |
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| Keywords: | Chinese cabbage Seedling stage Cd Tolerance |
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