%0 Journal Article
%T Does copper reduce cadmium uptake by di erent rice genotypes?<br>Does copper reduce cadmium uptake by different rice genotypes
%A CUI Yujing
%A ZHANG Xuhong
%A ZHU Yongguan
%A <br>CUI Yujing
%A ZHANG Xuhong
%A ZHU Yongguan
%J 环境科学学报(英文版)
%D 2008
%I 
%X A hydroponics experiment was conducted to investigate the effect of copper (Cu) on cadmium (Cd),calcium (Ca),iron (Fe),and zinc (Zn) uptake by several rice genotypes.The experiment was carried out as a 2×2×4 factorial with four rice genotypes and two levels of Cu and Cd in nutrient solution.Plants were grown in a growth chamber with controlled environment.The results showed a significant difference between the biomass of different rice genotypes (P＜0.001).The Cd and Cu concentration in the solution had no significant effect on the biomass.The addition of Cu significantly decreased Cd uptake by shoots and roots of rice (P＜0.001).The Cd concentration did not significantly influence Ca uptake by plants,whereas the Cu concentration did (P=0.034).There was a significant influence of Cd on Fe uptake by shoots and roots (P＜0.001,P=0.003,respectively).Zn uptake decreased significantly as the addition of Cd and Cu increased in shoots.We concluded that Cu had significant influence on Cd uptake.The possible mechanisms were discussed.
%K cadmium
%K calcium
%K copper
%K food chain
%K genotypes
%K zinc<br>镉元素
%K 钙元素
%K 铜元素
%K 食物链
%K 锌
%K 基因型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=D390F8D5ECBBEC0C2C74133A6F641C94&yid=67289AFF6305E306&vid=A04140E723CB732E&iid=38B194292C032A66&sid=2E01F39B6CBD53DE&eid=302684F6FB4B24FF&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=1&reference_num=40