Figure 7

Effect of Si, As(III), and As(III) + Si on (A) SOD (B) CAT (C) GPX and (D) GST activity in shoot and roots of Oryza sativa var. IR64 at 7 and 15 d. All values are means of three replicates (n = 3, ±SD) and repeated twice. Different letters indicate the significant mean difference (p < 0.05) between each treatment. The small latter (i.e. a, b, c and d) indicates the significant difference between treatment in same tissue type while capital latter (i.e. A and B) indicates the significant difference between duration among the same treatment in same tissue type.