Figure 3: The level of lipid peroxidation (A) and H2O2 production (B), determined in terms of the TBA-reactive compounds (nmol MDA g-1 FW) in the leaves of tomato plants fed with nitrate (black symbol) or ammonium (white symbol) as nitrogen source and treated with different doses of CdCl2. Each point represents the mean ± SD of triplicates from five independent experiments.