Fig. 4
Cucumber plant peroxidase, polyphenol oxidase, H2O2 and MDA contents after various treatments: sea water + ZnO@MgO NPs (200 mg/kg of soil), sea water + ZnO@MgO NPs (400 mg/kg of soil), control saline (irrigation with 35% of sea water), and control (using tap water). The standard deviation of the means plus the mean of three replicates make up each number. Values of the same letter in the same column do not differ significantly; nevertheless, post hoc Tukey’s test results at P < 0.05 show significant differences between distinct lower-case letters in the same column.
