FIGURE 1.

Influence of different drought stress levels on the production of (A) malenoaldehyde (MDA), (B) superoxide anion (O₂^.-), (C) hydrogen peroxide (H₂O₂), (D) thiobarbituric acid reactive substances (TBARS), (E) electrolyte leakage (EL), and (F) lipoxygenase (LOX) in three maize hybrids. Capped bars above means represent ±SE of three replicates. Small alphabetical letters above means denote the significant differences among treatment with in a maize hybrid at P ≤ 0.05. Ck, control (100% FC); LD, low drought (80% FC); MRD, moderate drought (60% FC); and SD, severe drought (40% FC); FC, Field capacity.