Fig. 2. Effects of the combined drought and heat stress on the activities of superoxide dismutase (SOD) and catalase (CAT), and malondialdehyde (MDA) content for ‘Midnight’ and ‘Brilliant’. Vertical bars on the top indicate LSD values (P = 0.05) for the comparison between cultivars at the given day of treatment. Vertical bars on the right are the LSD values for the comparisons over time of treatment for each cultivar.