Document Detail


Effects of elevated O(3) concentration on winter wheat and rice yields in the Yangtze River Delta, China.
MedLine Citation:
PMID:  22892574     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The effects of a continuing rise of ambient ozone on crop yield will seriously threaten food security in China. In the Yangtze River Delta, a rapidly developing and seriously air polluted region in China, innovative open-top chambers have been established to fumigate winter wheat and rice in situ with elevated O(3). Five years of study have shown that the yields of wheat and rice decreased with increasing O(3) concentration. There were significant relationships between the relative yield and AOT40 (accumulated hourly O(3) concentration over 40 ppb) for both winter wheat and rice. Winter wheat was more sensitive to O(3) than rice. O(3)-induced yield declines were attributed primarily to 1000-grain weight and harvest index for winter wheat, and attributed primarily to grain number per panicle and harvest index for rice. Control of ambient O(3) pollution and breeding of O(3) tolerant crops are urgent to guarantee food security in China.
Authors:
Xiaoke Wang; Qianqian Zhang; Feixiang Zheng; Qiwei Zheng; Fangfang Yao; Zhan Chen; Weiwei Zhang; Peiqiang Hou; Zhaozhong Feng; Wenzhi Song; Zongwei Feng; Fei Lu
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-11
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  171C     ISSN:  1873-6424     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  -    
Other Details:
Languages:  ENG     Pagination:  118-125     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
State Key Lab of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Shuangqinglu 18, Beijing 100085, China.
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