Figure 2: Effect of different concentrations of lead (Pb) (0, 50 and 100 μM) and silicon (0 and 1 mM) on leaf fresh weight (A) stem fresh weight (B), root fresh weight (C), leaf dry weight (D), stem dry weight (E) and root dry weight (F) in cotton plant. Values show the means of three replicate ± SE. Means followed by same small letters are not significant different at P ≤ 0.05 by using the Tukey test.