Fig. 10

The (A) soluble sugar, (B) protein contents, and (C) SOD activity under foliar application with ZnSO4 (50 mg/L) and ZnO NPs (30, 50 and 90 nm at 10, 50 and 100 mg/L) on days 2, 17, and 32. Data are shown as mean ± standard deviation of three replications. Significant differences (p < 0.05) are indicated by column lines labelled with different letters according to Duncan’s test.