The study of physiological and biochemical processes involved in cold tolerance can help breeders to produce tolerant varieties. In this study, H2O2, carotenoid, chlorophyll and ascorbic acid contents and antioxidative activity of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and guaiacol peroxidase (GPX), and some their isozymic patterns in ...