Fig. 2

Ascorbate peroxidase (APX) (A) and catalase (CAT) (B) activity in Spadana cucumber leaves in response to Tetranychus urticae and different spermine concentrations (1, 2, and 3 mM) treatments. Mean (± SD) was calculated from three replicates for each treatment. Bars with different letters are significantly different at P ≤ 0.05 applying LSD test