Effects of elevated O3 exposure on nutrient elements and quality of winter wheat and rice grain in Yangtze River Delta, China.
Environ Pollut
; 179: 19-26, 2013 Aug.
Article
em En
| MEDLINE
| ID: mdl-23639743
ABSTRACT
With the open-top chambers (OTCs) in situ in Yangtze River Delta, China in 2007 and 2008, the effects of elevated O3 exposure on nutrient elements and quality of winter wheat and rice grain were investigated. Grain yield per plant of winter wheat and rice declined in both years. The N and S concentrations increased under elevated O3 exposure in both years and C-N ratios decreased significantly. The concentrations of K, Ca, Mg, P, Mn, Cu and Zn in winter wheat and the concentrations of Mg, K, Mn and Cu in rice increased. The concentrations of protein, amino acid and lysine in winter wheat and rice increased and the concentration of amylose decreased. The increase in the nutrient concentration was less than the reduction of grain yield in both winter wheat and rice, and, hence, the absolute amount of the nutrients was reduced by elevated O3.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Ozônio
/
Oryza
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Triticum
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Poluentes Atmosféricos
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Valor Nutritivo
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article