| 不同基因型水稻吸镉差异及其与根表铁氧化物胶膜的关系 |
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| 引用本文： | 刘敏超,李花粉,夏立江,杨林书.不同基因型水稻吸镉差异及其与根表铁氧化物胶膜的关系[J].环境科学学报,2000,20(5):592-596. |
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| 作者姓名： | 刘敏超 李花粉 夏立江 杨林书 |
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| 作者单位： | 中国农业大学农业生态与环境科学系!北京100094 |
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| 基金项目： | 国家自然科学基金!项目 (编号 3960 0 0 2 2 )资助 |
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| 摘 要： | 采用琼脂培养方法，模拟铁在不同基因型水稻根表的氧化与淀积，研究了不央水稻吸镉的差异及其有表铁氧化物胶膜的关系，结果表明不同水稻基因型其根表淀积换的氧化物数量存在显著性差异，根表富集的镉量及根部，地上部合镉量均存在显著性差差，且镉在不同水稻植株体内转移运输能力不同；不同水稻基因型根膜中的含铁量与根表铁氧化物富集的镉量、根部的含镉量、地上部的含量存在显著性年线相关。
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| 关 键 词： | 水稻 基因型 铁氧化物胶膜 镉 吸附 根表 |
| 收稿时间： | 1999/6/28 0:00:00 |
| 修稿时间： | 1999-06-28 |
Differences of cadmium uptake by rice genotypes and relationship between the iron oxide plaque and cadmium uptake |
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| LIU Minchao,LI Huafen,XIA Lijiang and YANG Linshu.Differences of cadmium uptake by rice genotypes and relationship between the iron oxide plaque and cadmium uptake[J].Acta Scientiae Circumstantiae,2000,20(5):592-596. |
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| Authors: | LIU Minchao LI Huafen XIA Lijiang and YANG Linshu |
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| Affiliation: | Dept. of Agroecology and Environmental Science, China Agricultural University, Beijing 100094,Dept. of Agroecology and Environmental Science, China Agricultural University, Beijing 100094,Dept. of Agroecology and Environmental Science, China Agricultural University, Beijing 100094 and Dept. of Agroecology and Environmental Science, China Agricultural University, Beijing 100094 |
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| Abstract: | Differences of cadmium uptake by plants of rice genotypes and relationships between the concentration of Fe deposited on root surface and the concentration of cadmium in plants were studied in agar culture under controlled conditions. The results showed that there were differences in cadmium taken up by root and shoot, cadmium accumulated on root surface of different rice genotypes, the transportation of cadmium from root to shoot in different rice genotypes, and the amount of iron oxides deposited on the root surface of different rice genotypes. There was a significant correlation between the concentration of Fe deposited on root surface and the Cd accumulated on root surface, root and shoot of rice. |
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| Keywords: | rice genotype cadmium iron oxide plaque |
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