بررسی تأثیر پیشتیمار بذر با سالیسیلیک اسید در شرایط تنش خشکی بر جوانهزنی نخود

Drought stress is one of the most important factors that cause to disrupt in crop growth and development, especially at germination stage in arid and semiarid environment. Seed priming with salicylic acid enhances crop resistance ability to various environmental stresses such as drought. In order to evaluate chickpea seed priming with salicylic acid on some germination aspects under drought stress condition, a factorial experiment was conducted based on completely randomized design with four replications at research laboratory of faculty of agriculture, University of Kurdistan. The experiment treatments included five levels of salicylic acid (zero, 0.5, 1, 1.5, and 2 mM) and five levels of water potential (zero, -3, -6, -9, and -12 bar). Results showed that main and interaction effects of water potential and salicylic acid on studied traits were significant. Germination percentage was decreased with increasing water potential, but salicylic acid cause to improve germination at higher level of water potential. Salicylic acid concentration increases at higher levels of stress lead to increase root length, but shoot length was less affected. Overall, the results suggest a positive effect of salicylic acid on germination of chickpea under drought conditions, but the results will be reliable when tested in field conditions.