Evaluation of duration and composition of seed priming on the physiological traits affecting the yield of wheat (Triticum aestivum L.) Mehrgan cultivar in climatic conditions of Khuzestan

In order to investigate the effect of the duration and combination of priming on the most important physiological traits and yield of wheat (cv. Mehrgan), a factorial research was carried out in the form of a randomized complete block design with two factors and three replications in the agricultural year of 2018-2019 in Khorramshahr city. The treatments include the duration of seed priming in three levels (including 2, 4 and 6 hours) and types of priming in 4 levels (including hydropriming (distilled water), hormonal priming of salicylic acid with a concentration of 50 ppm, hormonal priming of gibberellic acid with a concentration of 100 ppm and urban tap water (witnesses) were performed. The interaction between duration and combination of seed priming had a significant effect on the number of spikes per unit area, number of seed per spike and seed yield. The highest seed yield in the treatment of soaking seeds for 6 hours in hormonal compounds (with an average of 445.02 g.m-2) and the lowest seed yield (with an average of 322.41 g.m-2) belongs to the treatment of soaking seeds for 2 hours in normal water. In general, field priming of wheat seeds with hormonal compounds (gibberellic and salicylic acid) for 6 hours can be effective in increasing the physiological traits and yield of wheat and the plant shows more reaction than other applied treatments.