Document Detail

Accumulation of copper in brown rice and effect of copper on rice growth and grain yield in different rice cultivars.
MedLine Citation:
PMID:  16844189     Owner:  NLM     Status:  MEDLINE    
A pot experiment with 38 commonly cultured rice cultivars showed that the effect of Cu (100 mg kg(-1)) on rice growth, grain yield and accumulation of Cu in brown rice varied greatly with different cultivars. Although the average Cu concentration in brown rice of the 38 cultivars was significantly increased (P<0.01) compared with the control, in none of the cultivars did Cu concentration in brown rice exceed the maximum permissible limit of 10 mg Cu kg(-1). This suggests that rice grown in Cu-contaminated paddy soil (100 mg Cu kg(-1)) will not adversely affect human health through the food chain. Because of the significant negative correlation between grain weight and Cu concentration in brown rice with the soil Cu treatment, screening for cultivars with low Cu accumulation in brown rice and high grain yield for Cu-contaminated areas is feasible. The present research led to the recommendation of three such cultivars: Jiahua, Zhenxian 866, Zhe 733. The average grain yield under Cu treatment (100 mg Cu kg(-1) soil) was significantly (P<0.01) reduced compared with the control. The decreases or increases of grain yields mainly resulted from the combined effects of the panicles per pot, spikelets per panicle and filled spikelets per panicle under the soil Cu treatment. Furthermore, there were significant (r=0.869, P<0.01) positive correlations between the RC (relative changes) of spikelets per panicle and filled spikelets per panicle under the soil Cu treatment.
Yu-Ping Yan; Jun-Yu He; Cheng Zhu; Chang Cheng; Xue-Bo Pan; Zhong-Yang Sun
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-07-17
Journal Detail:
Title:  Chemosphere     Volume:  65     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2006-10-20     Completed Date:  2007-04-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  1690-6     Citation Subset:  IM    
State Key Laboratory of Plant Physiology and Biochemistry, Zhejiang University, Hangzhou 310058, China.
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MeSH Terms
Copper / metabolism,  pharmacology*
Dose-Response Relationship, Drug
Food Contamination
Oryza sativa / drug effects*,  growth & development,  metabolism
Soil Pollutants / metabolism,  pharmacology*
Species Specificity
Reg. No./Substance:
0/Soil Pollutants; 7440-50-8/Copper

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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