CHANGES OF SÜPEROXIDE DİSMUTASE ACTIVITYIN WHEAT SEEDLİNGS EXPOSED TO NATURAL ENVİRONMENTAL STRESSES

Authors : Y KELEŞ

Pages : 0-0

View : 45 | Download : 14

Publication Date : 2000-01-01

Article Type : Research Paper

Abstract :The effects of natural environmental stresses on the superoxide dismutase insert ignore into journalissuearticles values(SOD); enzyme activity were investigated in Triticum aestivum L. insert ignore into journalissuearticles values(cv. Bezostaya-1, cv. Seri-82, cv. Kıraç-66); and Triticum durum Desf. insert ignore into journalissuearticles values(cv. Kızıltan-91, cv. Kunduru 414-44, cv. Ç.1252);. The seedlings that grovvn at normal insert ignore into journalissuearticles values(24/16°C);, low insert ignore into journalissuearticles values(5/-5°C); and high insert ignore into journalissuearticles values(40/30°C); temperature conditions were e.vposcd to waterlogging, drought and salinity insert ignore into journalissuearticles values(0.7 % NaCl); stresses. Changes of SOD activity in seedlings were investigated against to cross interactions between temperature and water-salt stresses. Activity of total SOD, Mn SOD and Cu/Zn SOD at low and hig);ı temperatures were slightly decreased. SOD activity was increased under drought conditions and salt stress. The highest activity of SOD was measured under isochronal effects of high temperature and drought-salinity stress. The results show that antioxidant defence system is impoıtant in plants that exposed toheavy water and salt stressses.
Keywords : Stress, wheat, cross tolerance

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