Fig. 3.

Histochemical detection (a) and accumulation of H₂O₂ (b) and MDA content (c) in roots of faba bean seedlings, pretreated with 2% CaCl₂ (P) or with H₂O (NP) for 6 h, and germinated for 7 days under 0 or 50 µM Cd. Values are the means of at least 10 replications ± SE. The data followed by different letters are significantly different at P ≤ 0.05