ACTA AGRICULTURAE BOREALI-SINICA ›› 2012, Vol. 27 ›› Issue (5): 213-217. doi: 10.3969/j.issn.1000-7091.2012.05.040

Special Issue: Oil crops

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Effects of Enhanced UV-B Radiation on Grain Yield and Reactive Oxygen Species Metabolism in Soybean Leaves

ZHAO Tian-hong, DAI Zhen, ZHAO Yi-xin, CAO Yan-hong, LIU Bo, LIU Yi-ou   

  1. College of Agronomy Shenyang Agricultural University Shenyang 110866 China
  • Received:2012-05-12 Published:2012-10-28

Abstract: In recent years,depletion of earth′s stratosphere ozone layer is one of the most serious environmental problems.The enhanced Ultraviolet-B radiation due to the destruction of ozone layer has greatly affects plant growth and development.The response of grain yield and reactive oxygen species metabolism in soybean leaves to enhanced UV-B radiation was investigated in this paper.The results showed that grains per plant,number of pods per plant and 100-seed weight decreased.Compared to the CK treatment,enhanced UV-B treatment significantly increased MDA and H2O2 content(P0.05),relative electrical conductivity and O-·2 production rate(P0.05).Activity of POD increased at branching and flowering stage,then it decreased at podding and filling stage,which was higher than the CK treatment at all of growing stages.Activity of CAT was lower than the CK treatment at flowering stage but higher at the other stages.SOD activity was higher than the CK treatment at branching stage but lower than the CK treatment at the other stages.It can be concluded that UV-B radiation stress has negative effects on soybean leaves on account of oxidative damage,which restrains soybean development and results in decreasing of yield.

Key words: Enhanced, UV-B radiation, Grain yield, Soybean, Reactive oxygen species metabolism

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Cite this article

ZHAO Tian-hong, DAI Zhen, ZHAO Yi-xin, CAO Yan-hong, LIU Bo, LIU Yi-ou. Effects of Enhanced UV-B Radiation on Grain Yield and Reactive Oxygen Species Metabolism in Soybean Leaves[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(5): 213-217. doi: 10.3969/j.issn.1000-7091.2012.05.040.

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