Abstract This pot experiment was conducted outdors in Kohdasht city to eva‎luate the effects of innoculation mungbeen plants with different mycorrhizal species on the growth and development of mungbeen cultivars under two levels of soil moisture. Experimental factors included four inoculation treatments (no inoculation, seperate inoculation with mycorrhizal species of Funneliformis mosseae, Rhizophagus intraradices and Glomus Fasciculatum), irrigation treatments (based on 35 and 65% depletion of soil available water) and three mungbeen cultivars (Partow, Hendi and Arteshi). The experimental treatments were arranged as factorial in a completely randomized design with three replications. Water stress decreased root colonization, the concentration of phosphorus, relative leaf water content, the concentrations of chlorophyll and caratonoeid, root dry weight, grain yield and its components, biological yield and harvest index while increased the concentrations of malondialdehyde, proline and soluble carbohydrates and the activities of antioxidant enzymes catalase, ascorbate peroxidase and glycol peroxidase. The extent of reduction in root colonization, root dry weight, s chlorophyll concentration, number of grains per plant, grain yield and the amount of increase in malondialdehyde concentration due to water stress were less in Arteshi and more in Hendi cultivar. Therfore, cultivars Arteshi and Hendi were respectively recognized more tolerant and sensetive in response to water deficit as compared to Partow. The extent of increase in antioxidant enzymes activity under water stress was greater for catalase as compared to ascorbate peroxidase and glycol peroxidase. Plant innoculation with mycorrhizae imporoved all growth traits, however, the extent of positive effects of Rh. intraradices on root colonization, root dry weight, the concentrations of chlorophyll and caratonoeid, the activities of antioxidant enzymes, number of pod per plant, grain and biological yield were greater as compared to the other two mycorrhizal species. Forthermore, the extent of positive effect of mycorrhizal inoculation on biological yield was greater under water stress, especially in the plants inoculated by Rh. intraradices. The highest positive response to mycorrhizal inoculation was seen in Arteshi cultivar. The results of this experiment, therfore, showed that among studied mungbeen cultivars, Arteshi inculated by Rh. intraradices, as compared to Partow and Hedndy, had greater growth potential in Kohdasht city under both irrigation treatments.

مرتضي زاهدي

حميدرضا عشقي زاده , سجاد رحيمي مقدم

جمشيد رزمجو , فرشيد نوربخش