3.2 Photosynthetic gas exchange parameters
In cucumber plant, an increase in stomatal conductance and a decrease in stomatal resistance and water use efficiency were detected which were statistically significant (p ≥ 0.01). In wheat plant, a significant decrease was observed in net assimilation rate, transpiration rate and stomatal conductance, while treatment with amaranth leachate led to significant increase (p ≥ 0.01) in stomatal resistance and water use efficiency in comparison to the control (Table 3).