title: Effects of elevated O₃ exposure on nutrient elements and quality of winter wheat and rice grain in Yangtze River Delta, China.
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.
authors: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
authors: Feixiang
authors: F
authors: Zheng
authors: Xiaoke
authors: X
authors: Wang
authors: Weiwei
authors: W
authors: Zhang
authors: Peiqiang
authors: P
authors: Hou
authors: Fei
authors: F
authors: Lu
authors: Keming
authors: K
authors: Du
authors: Zhongfu
authors: Z
authors: Sun
mesh_terms: D000393:Air Pollutants / Q000633:toxicity*; D002681:China; D004784:Environmental Monitoring; D009753:Nutritive Value; D012275:Oryza / Q000187:drug effects* / Q000502:physiology; D010126:Ozone / Q000633:toxicity*; D012621:Seasons; D014908:Triticum / Q000187:drug effects* / Q000502:physiology
chemical_list: D000393:Air Pollutants; D010126:Ozone