*2.7. Measurement of Physiological Indicators*

REL was estimated using the thiobarbituric acid reaction [43]. Total chlorophyll content was determined in the leaves according to methods previously described by Arkus et al [44]. Lipid peroxidation was determined by measuring the MDA content following the method of Campos et al [45]. POD and SOD activity levels were measured following the methods of Guo et al [46]. APX activity was measured using the methods of Nakano and Asada [47]. CAT activity was determined following AebiH [48].
