The plant cuticle and waxes have many important functions. They reduce the loss of water, reflect or attenuate radiation, form the basis of phyllosphere, protect plant tissues against penetration by fungi, bacteria and insects, as well as from mechanical damage (by wind, rain, soil particles etc.), reduce water retention on the plant surface, and provide a self-cleaning surface. The plant cuticle plays an important role in protecting plants against water losss. The outermost layer is epicuticular wax, which may be amorphous in form or possess a semi crystalline or crystalline structure [Jenks and Ashworth, 1999]. The cuticle plays a fundamental protective role against water loss, particularly when stomata are closed [92]. Shivasankar et al. [1993] reported that the level of ECW was higher in stress condition. When drought progressesed, stomata get closed and water loss occured through the leaf cuticle without CO2 fixation. Higher deposition of ECW decreased cuticular permeability of water loss and increases the crop albedo [28].