Figure 4.

Effects of different levels of drought stress on (A) superoxide dismutase (SOD), (B) catalase (CAT) and (C) peroxidase (POD) for the non-transgenic control (CK), and the transgenic lines with “Very high” (T6 and T7) and “High” (Tl and TS) expressions (as ranked in Table 2). Significant differences among means over the drought-stress treatments were determined according to Tukey's HSD test at P < 0.05. The line bars are standard errors (n = 9, i.e., 3 replicates × 3 runs of the experiment).