The effect of salicylic acid priming on germination, yield and some morphological characteristics of different rainfed wheat cultivars in Khorramabad

In order to study the effect of priming and foliar application of salicylic acid on germination, yield and some morphological characteristics of different wheat cultivars, an experiment was conducted as factorial based on randomized complete block design with three replications in agricultural research station of Sarab plain in Khorramabad in 2015-16. The application factor of the salicylic acid solution was in four levels (control, foliar application of distilled water, priming and foliar application of salicylic acid with concentration of 1 mm, foliar application of salicylic acid with a concentration of 1.5 mm and foliar application of salicylic acid with a concentration of 2 mm) and the factor of rainfed wheat in three levels (Qaboos, Kareem and Kuhdasht) was the test agents. The simple effect of cultivar and salicylic acid solution on performance and most of the attributes were significant. According to the results, the rate of Qaboos with 3974.6 kg / ha had the highest seed performance among the studied figures. According to the obtained results, the best treatment for priming the seeds was the use of 1.5 mm salicylic acid, which caused significant effect on germination percentage and rate of germination .Priming and leaf foliar application with a concentration of 1.5 mm salicylic acid caused the seed performance to significantly increase in comparison to control treatment, so that seed yield was increased (10.3%) compared to control treatment by priming and leaf foliar application with a concentration of 1.5 mm salicylic acid. The results of priming and foliar application of two mm salicylic acid showed has compensated the reduction caused by priming on germination percentage and germination rate of seeds and increased the performance and performance components compared to the control treatment. Due to the positive effect of Qaboos and priming and foliar application of 1.5 mm salicylic acid in improving wheat grain performance, we can use priming and foliar application of 1.5 mm salicylic acid for rainfed Qaboos wheat in Khorramabad climate.