The effect of salicylic acid priming on germination indices and seed vigor of triticale under salt stress

In order to study the effect of salicylic acid priming on seed germination indices and seedling growth of triticale under salt stress, a research was carried out as a factorial experiment in a completely randomized design with four replications in seed science and technology laboratory of plant production and genetics department of Agriculture Sciences and Natural Resources University of Khuzestan in 2018. Experimental factors were salicylic acid priming (control (no priming), 0.5 mM salicylic acid in 3 hours, 1 mM salicylic acid in 3 hours, 1.5 mM salicylic acid in 3 hours, 2 mM salicylic acid in 3 hours, 0.5 mM salicylic acid in 6 hours, 1 mM salicylic acid in 6 hours, 1.5 mM salicylic acid in 6 hours, 2 mM salicylic acid in 6 hours) and different salinity levels (include 0, 4, 8, 12, 16 and 20 dS/m). The analysis of variance showed that the effect of priming, salinity stress and the interactive effects were significant on all measured traits (except germination percetage) at 1 percent probability level. The comparison of means showed that salinity stress decreased germination traits but salicylic acid priming reduced the negative impact of salinity stress and improved different germination indices. The best concentration for salicylic acid priming was at 0.5 mM for 6 hours. Generally, the results showed that under salinity stress conditions, seed priming with salicylic acid can be used to reduce the negative impact of salinity stress on seed germination and triticale seedling growth.