| 镉对不同生态型水稻的毒性及其在水稻体内迁移转运 |
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| 引用本文： | 胡莹,黄益宗,段桂兰,刘云霞.镉对不同生态型水稻的毒性及其在水稻体内迁移转运[J].生态毒理学报,2012,7(6):664-670. |
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| 作者姓名： | 胡莹 黄益宗 段桂兰 刘云霞 |
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| 作者单位： | 中国科学院生态环境研究中心城市与区域生态国家重点实验室，北京 100085;中国科学院生态环境研究中心城市与区域生态国家重点实验室，北京 100085;中国科学院生态环境研究中心城市与区域生态国家重点实验室，北京 100085;中国科学院生态环境研究中心城市与区域生态国家重点实验室，北京 100085 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2009ZX07212\|001\|05) |
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| 摘 要： | 采用溶液培养方法研究镉(Cd)对两种不同生态型水稻的毒性影响以及Cd在水稻体内的转运.结果表明,粳稻品种杨辐粳7号比籼稻品种K优818对Cd毒害反应更敏感.两种生态型水稻品种的根系对Cd的吸收积累差异比较大,在10 μmol·L-1 Cd浓度下生长3～14 d,杨辐粳7号根系中Cd浓度比K优818高44.5％ ～ 99...
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| 关 键 词： | Cd 水稻 生态型 毒性 转运系数 |
| 收稿时间： | 4/9/2012 12:00:00 AM |
| 修稿时间： | 6/8/2012 12:00:00 AM |
Cadmium Toxicity and Its Translocation in Two Ecotype Rice Cultivars |
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| Hu Ying,Huang Yizong,Duan Guilan and Liu Yunxia.Cadmium Toxicity and Its Translocation in Two Ecotype Rice Cultivars[J].Asian Journal of Ecotoxicology,2012,7(6):664-670. |
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| Authors: | Hu Ying Huang Yizong Duan Guilan and Liu Yunxia |
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| Institution: | State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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| Abstract: | Cadmium (Cd) toxicity and its translocation in two different ecotype rice cultivars were investigated by using hydroponic experiment. The results showed that Yangdao 7 (Japonic rice) was more sensitive to Cd than that of KYou 818 (Indica rice). Cd concentration in roots of Yangdao 7 was 44.5%~99.5% higher than that of K You 818 after exposure to 10 mol·L-1 Cd for 3~14 days, while Cd quantity accumulation in shoots of K You 818 was 1.6 times of Yangdao 7 (P<0.05) after exposure to 10 mol·L-1 Cd for 14 days. Cd translocation factor for K You 818 was 1.3~2.3 times of Yangdao 7 (P<0.05). And Cd translocation factor for KYou 818 increased with exposure time increasing, while that for Yangdao 7 decreased. These results indicated that Cd retention in roots of Yangdao 7 was higher than that of K You 818. Therefore, the health risk of Cd uptake through rice food could be decreased through variety screening. |
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| Keywords: | cadmium rice ecotype toxicity translocation factor |
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