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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (18): 74-79.doi: 10.11924/j.issn.1000-6850.casb14120134

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Effects of Low Temperature Stress on the Content of MDA, SOD and POD Activity in Sorghum Seedlings

Shi Hongmei, Zhang Haiyan, Yang Bin, Zhang Guixiang   

  1. (Sorghum Institute, Shanxi Academy of Agricultural Sciences, Jinzhong Shanxi 030600)
  • Received:2014-12-19 Revised:2015-06-05 Accepted:2015-01-23 Online:2015-07-27 Published:2015-07-27

Abstract: In order to understand the chilling tolerance physiological mechanisms of sorghum seedling, the author analyzed the malondialdehyde (MDA) content, superoxide dismutase (SOD) activity and peroxidase (POD) activity under the condition of low temperature and room temperature with a chilling tolerant variety and a chilling susceptible variety as the test materials. The results showed that MDA content, SOD activity and POD activity of two types of materials showed an increasing trend after low temperature stress. The increase of the MDA of chilling tolerant variety was below that of the chilling susceptible variety, while the increases of SOD activity and POD activity of chilling tolerant variety were above that of the chilling susceptible variety. It proved that whether variety was resistant to cold or not was related to the increase of MDA content, SOD activity and POD activity. Smaller increase of MDA content in material could result in more tolerance to cold; while larger increase of SOD activity and POD activity could result in more tolerance to cold.