ﺗﺄﺛﻴﺮ اﺳﻤﻮﭘﺮاﻳﻤﻴﻨﮓ ﺑﺮ ﻣﺆﻟﻔﻪﻫﺎی ﺟﻮاﻧﻪزﻧﻲ ﺑﺬر ﻻﻟﻪ واژﮔﻮن Fritillaria imperialis

Seed priming is one of those methods which leads to increase germination capacity in a wide range of plants. The general aim of this study was determining the most effective concentration and time span of priming by potassium nitrate (KNO3) on germination and seedling growth of Fritillaria imperialis. For this purpose, a 3 replicate 4×3 factorial experiment was performed in randomized complete block design with four levels of osmotic potential (0, 1, 2 and 3%) and time span of priming (12, 24 and 36 hours). Some traits that evaluated and measured include radical length, plumul length, radical fresh weight, plumule fresh weight and germination rate. Analysis of variance showed that effect of osmotic potential level and time span of priming on features under study were significant. KNO3 concentrations of 1% for 36 hours caused the highest radical length (5.76), plumul length (2.65), radical fresh weight (39.17), plumule fresh weight (19.4) and germination rate (13.05). therefore, it should be noticed that concentration KNO3 and time span of its keeping play a key role for using positive effects of priming. Generally, concentration of 1% during 36 hours increase germination traits.