Effects of elevated O₃ exposure on nutrient elements and quality of winter wheat and rice grain in Yangtze River Delta, China.
Effects of elevated O₃ exposure on nutrient elements and quality of winter wheat and rice grain in Yangtze River Delta, China.
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DOI：
10.1016/j.envpol.2013.03.051
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发表时间：
2013-08
影响因子：
8.9
通讯作者：
Feixiang Zheng;Xiaoke Wang;Weiwei Zhang;Peiqiang Hou;F. Lu;K. Du;Zhongfu Sun
中科院分区：
文献类型：
--
作者：
Feixiang Zheng;Xiaoke Wang;Weiwei Zhang;Peiqiang Hou;F. Lu;K. Du;Zhongfu Sun
2007年和2008年，在长江三角洲地区采用开顶式气室（OTCs）原位试验，研究了O3暴露浓度升高对冬小麦和水稻籽粒营养元素和品质的影响。冬小麦和水稻的单株籽粒产量两年都呈下降趋势。N、S浓度随O3浓度升高而升高，C-N比值显著降低。冬小麦中K、Ca、Mg、P、Mn、Cu、Zn的含量和水稻中Mg、K、Mn、Cu的含量增加。冬小麦和水稻蛋白质、氨基酸和赖氨酸含量增加，直链淀粉含量降低。养分浓度的增加小于小麦和水稻籽粒产量的减少，因此，养分的绝对量减少了升高O3。
With the open-top chambers (OTCs) in situ in Yangtze River Delta, China in 2007 and 2008, the effects of elevated O3exposure 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 O3exposure 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.