Effects of Uniconazole, Mycorhyza and Psedumonas on Antioxidant Enzymes Activity and Some Compatible Osmolites of Wheat (Triticum aestivum L.) under Soil Salinity Conditions

In order to study the effect of uniconazole and bio fertilizers on activity of some antioxidant enzymes and compatible osmolites of wheat (Triticum aestivum L var Zagros.) in soil salinity conditions, a factorial experiment was conducted based on randomized complete block design with three replications in a research greenhouse of the Faculty of Agriculture and Natural Resources of Mohaghegh Ardebili University in 2018. Treatments were included soil salinity in four levels (no application of salinity as control and application of 40, 80 and 120 mM soil salinity), by NaCl and application of uniconazole, mycorrhiza fungi (Glomus intraradicese) and pseudomonas putida strain 186 in seven levels. Means comparision showed that both application of mycorrhiza with uniconazole and pseudomonas under 120 mM salinity increased soluble sugars and proline contents, antioxidant enzymes activity such as catalase, peroxidase polyphenol oxidase (93.98, 47.33, 63.88, 75.67, 69.35% respectively) in comparison with no application of bio fertilizers under without salinity. Also, both application of mycorrhiza with uniconazole and pseudomonas under without salinity increased leaf proteine, plant height and grain yield (72.36, 41.85 and 108.84% respectively) and decreased electrolyte leakage (39.02%) in comparison with application of bio fertilizers under at the highest soil salinity level. It seems that the mentioned bio-fertilizers and uniconazole application can increase grain yield of wheat due to improve biochemical and physiological traits of wheat under soil salinity condition.