Effect of Arbuscular Mycorrhizal Fungi colonization on Growth and Physiology of Calotropis Procera Seedlings desert species under irrigation period

Present study aimed to enhance resistance to drought stress Calotrope Seedlings Using AMF is conducted under greenhouse conditions for six months. So an experiment with two levels of inoculum (Control and AMF) and six levels of water stress (3, 6, 9, 12, 15 and 18 days irrigation interval) as a factorial experiment in a completely randomized design with three replications was formed. The highest percentage of mycorrhizal colonization in seedlings under drought 3 days was showed at a rate of 43 percent. The rate of photosynthesis and transpiration in plants 9.06 and 0.35 respectively that with increasing intensity of drought has resulted in a reduction parameters. N concentration in leaves and roots of the seedlings were inoculated and control showed significant differences in stress levels. Water use efficiency amount is 0.55 under drought stress 6-day mycorrhizal fungi inoculation was observed. Results of this study indicated that, with regard to the role of Arbuscular mycorrhizal fungi in Enhance and facilitate the uptake of water and elements of the nutritional, increasing the volume of the roots, creating root colonization and improvement of physiological variables interval of drought to 9 days.