Anti-transpiration agents affected the leaf chemical constituents, that is, soluble proteins. No protein bands of high and lower molecular weights were detected in untreated leaves, but appear only after treatment with the three used agents at different concentrations. These results may be due to the effect of different anti-transpiration treatment on induction or inhibition or both on gene expression which led to absence, presence or increase/ decrease of protein bands intensity. These results could be explained by Taravati et al. (2007) who mentioned that, hydroxyl groups in polyols are thought to form a hydration sphere around macromolecules, thus protecting cells against stress by stabilizing the quaternary structure of proteins such as membranes and enzymes.