Fig. 3. The effect of sodium chloride (NaCl) salinity stress and silicon (Si) and nonsilicon (N-Si) on transpiration rate of tomato plants. Bars with different letters are
significantly different according to LSD test at P < 0.05. 1 mM Si (Si1), 2 mM Si (Si2),
1 mM N-Si (N-Si1), and 2 mM N-Si (N-Si2), and NSc without Si and N-Si were considered as control (nutrient solution without Si or NaCl).