The comparative effects of Salicylic acid and Gibberellin on seed germination of the lentil (Lens culinaris L.)

In this research,the effects of Salicylic acid and gibberellin either alone or in combination on the percentage of germination and germination rate of seeds, and longitudinal growth of root and shoot of seedlings of Lentil(Lens culinaris L.) and the activity polyphenol oxidase (PPO) and peroxidase (POX) were studied. seeds were transferred to petri dishes after 7h pretreatment with salicylic acid and gibberellin and interactional solutions of salicylic acid and gibberellin. Then the 3day's pretreatment plants were transferred to pots containing perlit. The results showed that salicylic acid and gibberellin caused to increase of percentage of germination and germination rate of seeds. The obtained results showed that in the treatment of Salicylic acid (150μM) in combination with gibberellin (100 μM) significant increase in the percentage of germination of seeds compared to the control.and in the interaction between 100 μM Salicylic acid in combination with 100 μM gibberellin maximum increase was seen in the germination rate of seed of Lentil. Enzymes assay showed that enzyme activity was increased in gibberellin alone and salicylic acid reduced activity of antioxidant enzyme. Gibberellin alone, caused more increase of longitudinal growth of shoots of seedlings of Lentil than control,and hadnt significant effect in longitudinal growth of root.