A greenhouse research was carried out to investigate the effect of salinity stress and potassium level on root and shoot biomass accumulation of saffron. Treatments were 4 levels of NaCl (3.4, 6.4, 9.4 and 12.4 dS/m) and 3 levels of potassium (50, 100 and 150 % of Hoagland nutrition solution base). Results indicated that potassium significantly controlled the negative effects of NaCl on length and number of roots as well as fresh weight and number of leaves and roots per plant. Increasing salinity and potassium levels caused a reduction in leaf water content, and more electrolyte leakage. It seems that in the presence of salinity increasing 50% extra potassium (Based on Hoagland nutrient solution) in the rhizosphere of saffron can improve damaging effects of NaCl up to 9.4 dS/m of soil solution.
کلید واژگان :
Relative water content, electrolyte leakage, root/shoot dry matter, biomass production.
