Salicylic acid and jasmonic acid application in some physiological performances

A greenhouse experiment with factorial arrangement based on randomized complete block design with three replications was conducted in 2014 to evaluate the effects of salicylic acid (1 mM) and jasmonic acid (0.5 mM) on some physiological trairs of safflower plant under salt stress (control, 4, 8, and 12 dS/m). Leaf chlorophyll content index (CCI), photosystem II efficiency (Fv/Fm), relative water content (RWC), leaf area index (LAI) and grain yield per plant decreased with increasing salinity. The CCI, Fv/Fm, RWC and LAI were significantly higher for plants treated with jasmonic acid and salicylic acid under saline and non-saline conditions, compared with control. These superiorities in physiological performance of hormone treated plants led to significant advantage in grain yield of safflower under different salinity treatments. Therefore, salicylic acid and jasmonic acid can be used to promote growth and development of safflower under favorable and unfavorable environmental conditions, which ultimately can enhance grain yield. (C) 2015 IASE Publisher All rights reserved.