عنوان مقاله [English]
نویسندگان [English]چکیده [English]
To find outthe effect different priming on germination characteristics and some antioxidant enzyme
activity of Echinacea purpureal, an experiment was conducted in completely randomized design with
four replications in 2015 at the Faculty of Agriculture, University of Yasouj. The experimental
treatments consisted of four levels of priming included of gibberellic acid 500 mg/L(12 and 24 h),
potassium nitrate 29.7mM (12 and 24 h), seeds priming with distilled water (12 and 24 h), salisilic
acid 200 mM(12 and 24 h) and control. In this study, means of germination time, germination rate,
germination percent, Catalase and Peroxidase activity enzyme measured and evaluated. The results
showed that priming treatments had a significant effect on means of germination time, germination
rate, germination percent, Catalase and Peroxidase activity enzyme. Priming with gibberellic acid 500
mg/L in 12 hours was more effective to achieve the highest germination characteristics and catalase
activity. The highest peroxidase activity was achieved from priming with distilled water for 12 hours.
Also, the results showed that increase in priming time had a negative effect on most of the measured
characteristics. Overall, priming with gibberellic acid 500 mg/L for 12 hours is recommended to
improve germination and vigourous seedling production.