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Bulletin of Botanical Research ›› 2015, Vol. 35 ›› Issue (6): 860-865.doi: 10.7525/j.issn.1673-5102.2015.06.012

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Effect of Low Temperature Stress on Physiological Changes in Oil Palm(Elaesis guineensis Jacg.) Seedling under Different Time

LIU Yan-Ju1,2;CAO Hong-Xing1,2*;ZHANG Ru-Lian3   

  1. 1.Coconut Research Institute,CATAS,Wenchang 571339;
    2.Hainan Key Biological Laboratory of Tropical Oil Crops,Wenchang 571339;
    3.Tropical Crops Genetic Resources Research Institute,Danzhou 571737
  • Online:2015-11-20 Published:2016-01-18
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We used eight months of oil palm seedlings as materials to study the effect of different time of low temperature stress on physiological and biochemical changes of oil palm seedling, and according to the temperature variation in Hainan, set up four different minimum temperature treatments including CK(natural temperature treatment), 18℃(T1 treatment), 12℃(T2 treatment) and 6℃(T3 treatment) after 0, 7, 14, 21 d sampling, respectively. With the decreasing of temperature and the increasing of time, the oil palm seedling leaf water content and SOD activity continued to decrease, the soluble protein, sugar content, H2O2 and MDA content continued to increase, and POD, CAT, APX activity first increased and then decreased. Under T2, T3 the seedling leaf became brown and oil palm seedling growth slowed down significantly after twoweek treatment. Low temperature caused obviously oxidative damage, but oil palm seedlings used adaptation mechanisms by increasing the contents of soluble protein, sugar and antioxidant enzyme activity to resist oxidative damage caused by low temperature for normal growth.

Key words: oil palm, low temperature, MDA, antioxidase

CLC Number: