In order to determine the effects of root inoculation of grape cv. Sefid bidaneh with three species of mycorrhiza fungus namely G. fasiculatum, G. intraradices and G. mosseae on the absorption of macro and microelements including phosphorus, potassium, and magnesium in leaf under drought conditions, an experiment was designed in a factorial based on randomized complete block design with four replications. The results showed that an increase in drought stress resulted in the reduction in macro and micronutrients absorption, and inoculation with mycorrhiza fungus could have a positive effect on the greater absorption of these elements compared to control. The amount of leaf phosphorus in the treatment of G. fasiculatum was the highest so that it showed a significant difference from G. mosseae and control treatments. The highest amount of potassium was found in G. mosseae treatment that showed a significant difference from other treatments. Based on the results, G. fasiculatum treatment had the highest content of magnesium, while the lowest rate was obtained in G. intraradices treatment.

Keywords