University of Guilan Iranian Journal of Seed Sciences and Research 2476-3780 3 3 2016 09 22 Effect of different seed priming on germination characteristics and some antioxidant enzymes activity of Echinacea purpurea Effect of different seed priming on germination characteristics and some antioxidant enzymes activity of Echinacea purpurea 1 10 2109 FA Khatoon Ansari Amin Salehi Mohsen Movahedi Sanaz Heidari Journal Article 2015 12 16 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.<br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" /> 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.<br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" />

https://jms.guilan.ac.ir/article_2109_6b13e6aff18acfee5f9574cd2baf1628.pdf