Plants frequently interact with various environmental factors during their life time. These environmental factors may sometimes become harsher to plants and act as stress factor which negatively influence to plant growth and reproduction. Among the major abiotic stresses viz. drought, flood, extreme heat or cold, high salinity or light, nutrient deficiency etc., drought stress is chief factor that can control the yield of several economically important crops. Drought stress cause in many physiological and biochemical changes and result in crop loss. Thus act as major food limiting factor of...