تاثیر پرایمینگ بذر با منابع و غلظت‌های مختلف پتاسیم بر خصوصیات جوانه‌زنی بذر و صفات گیاهچه‌ای پنبه

Seed priming is a form of seed pre-treatment that can induce increasing percentage and rate of seed germination and emergency uniform, better establishment and faster grow of seedling, resulting stronger plant production, better plant growth and further use of production factors. This means crop yield will increase especially in stressed areas. In this study, seed of cotton var. Sahel was primed with potassium chloride, potassium nitrate and potassium sulphate at three concentrations including 0.15, 0.30 and 0.45 mol/l K for 16 h and then their seed germination properties and seedling traits were compared with distilled water priming and no-priming treatments. Analysis of variance showed the effects of various treatments are significant at 1% level on seed germination properties and seedling traits. Based on mean data comparison, distilled water treatment showed significant and considerable superiority comparing with other treatments throughout all measurements. However, increasing potassium concentration decreased seed germination properties and seedling traits of cotton, 0.15 mol/l K concentration of the most potassium resources did not had significantly difference with distilled water treatment in terms of percentage and germination rate and length, fresh and dry weight of rootlet.