effects of glomus fasciculatum and g. mosseae on growth, photosynthesis and some nutrient absorption of ziziphus spina-christi l. seedlings

the research aims at studying the effects of mycorrhizal fungi (glomus fasciculatum, g. mosseae and mixed composition) on growth, photosynthesis and nutrient absorption of ziziphus spina-christi in mehran greenhouse, ilam province. the result showed that colonization rate in mixed treatment was more than pure treatment of g. fasciculatum and g. mosseae. also, root fresh weight, stomatal conductance and chlorophyll a of mycorrhizal seedlings were more than non-mycorrhizal seedlings of ziziphus spina-christi. the basal diameter, root dry weight, nitrogen content of shoot and phosphorous content of root in mixed and pure treatments of g. mosseae were more than g. fasciculatum and control treatment. also, the photosynthesis and transpiration in mixed and pure g. fasciculatum were more than g. mosseae and control treatment. mycorrhizal fungi had not significant effects on height (p = 0.269), shoot fresh weight (p=0.479), shoot dry weight (p = 0.697), chlorophyll b (p = 0.097), nitrogen content of root (p = 0.307), phosphorous content of shoot (p = 0.126), k of shoot (p = 0.667) and root (p = 0.638). the result of this study showed that mixed treatment, due to more colonization rate than other pure fungi, had more effects on growth and photosynthesis of z. spina-christi.