Spraying silicon and/or cerium sols favorably mediated enhancement of Cd/Pb tolerance in Lettuce grown in combined Cd/Pb contaminated soil

文献类型: 外文期刊

第一作者: Li, Shuyi

作者: Li, Shuyi;Zhang, Shirong;Ding, Xiaodong;Liao, Xinrong;Wang, Rongping

作者机构:

关键词: Lettuce;silicon/cerium sol;Cd/Pb accumulation;antioxidant enzyme activity

期刊名称:2013 INTERNATIONAL SYMPOSIUM ON ENVIRONMENTAL SCIENCE AND TECHNOLOGY (2013 ISEST)

ISSN: 1878-0296

年卷期: 2013 年 18 卷

页码:

收录情况: SCI

摘要: A field experiment of foliar application of silicon sol, cerium sol and silicon-cerium composite sol of different concentrations on Lettuce in field mildly combined Cd/Pb contaminated soil, was conducted to study effects of the application on yield, quality, antioxidant enzymes (SOD, POD) activities and Cd/Pb absorption, and hence to determine optimum concentration of the silicon sols and cerium sols to be sprayed for relieving toxicity of Cd/Pb. Results showed that spraying silicon and cerium sols could promote growth of Lettuce, increase contents of vitamin C and soluble sugar, and reduce nitrite content, enhance activities of SOD and POD, and inhibit the absorption of Cd/Pb and decrease the content and accumulation of Cd/Pb in shoots and roots, and reduce the risk of Cd/Pb to human body through food chain, while spraying silicon-cerium composite sol of 0.50 g.kg(-1) silicon sols (SiO2) and 0.20 g.kg(-1) cerium sols (CeO2) was the most significant in effect. (C) 2013 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license

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