Effect of High Temperature Stress on Cell Membrane in Celery Seedlings(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of High Temperature Stress on Cell Membrane in Celery Seedlings

Author(s):: ZHU Xin¹; 2; SHEN Huo-lin²; 1.Collage of Agronomy and Biotechnology,China Agricultural University,Beijing 100094；
2.Tianjin Agricultural Demonstrated Center,Tianjin 300192

Keywords:: celery; high temperature stress; membrane stability; MDA; protective enzyme system

Abstract:: Taking 8 lines of celery with different heat resistance that screened out according to the observation of many years in the natural high temperature in summer of Tianjin and Beijing as materials,membrane stability,MDA content and protective enzyme activity were studied under high temperature stress.The results showed that the membrane stability of heat resistant lines were higher than heat sensitive lines,while MDA content was negatively correlated with heat resistance.Changes of each protective enzyme were not identical.CAT activity was positively associated with heat resistance.With the increase of heat treatment temperature,POD activity decreased,but the heat resistant lines increased less than heat sensitive lines in the same high temperature.There was significant difference in SOD activity between the lines,but no significant correlation between different lines.

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Last Update: 2014-08-12