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《Journal of Beijing University of Agriculture》 2013-02
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Dynamic changes of antioxidant enzymes activity in Primula vulgaris Huds.'LIRA' under heat stress

YANG Wenli,GUAN Xuelian,ZHANG Ruili*,LENG Pingsheng(College of Landscape Architecture,Beijing University of Agriculture,Beijing 102206,China)  
To study the changes of Primula antioxidant system under high temperature stress,the activitis of superoxide dismutase(SOD),peroxidase(POD),catalase(CAT) were measured at 42 ℃ at vegetative growing stage and flowering stage of Primula vulgaris Huds.'LIRA' leaves.The results showed that the activities of three antioxidant enzymes firstly increased and then lessened,and then kept in lower level after 8~10 h at 42 ℃.The change trend of SOD and POD activitis at vegetative growing stage was almost same as that at flowering stage,but the range of former is larger than that of the latter.These results demonstrated that leaves at vegetative growing stage of Primula vulgaris LIRA' had higher heat-resistance than that at flowering stage,and the continuous stress is most likely to cause irreversible injury on leaves of this plant at 42 ℃ for 8~10 h.
【Fund】: 北京市自然科学基金项目(6122008);; 北京市属高等学校人才强教计划资助项目(PXM2012-014207)
【CateGory Index】: S682.15
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