Journal of Rangeland

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A completely randomized design with four replications was used to evaluate the effects of potassium nano-silicate (0, 500 and 1000 mg/li), nano-titania (0, 500 and 1000 mg/li), effective micronutrients (EM) (0, 1 and 2%) on germination and growth characteristics of Onobrychis sativa in laboratory condition. Allometric coefficients (AC), germination velocity (GV), germination percentage (GP), vigor index (VI) and tissue water content (TWC) were measured at the end of germination of the species. Results showed that the effects of treatments on the germination velocity, germination percentage, vigor index, allometric coefficients, seedling fresh weight, shoot length and tissue water content were significant. However, the effect of these treatments on the seedling dry weight and root length were not significant. Moreover, results showed that the highest stem length (6.76 cm) and AC (1.5) were observed in the nanosilicate 1000 ppm. The highest GP (8.5 number/day) and GV (46%) in the nano-titanium 1000 ppm, and the highest fresh weight of seedling (3.37 g/petridis), VI (0.45) and TWC (91.6) were observed in the EM 2%. The results of this study can be used to enhance the success of germination and establishment of O. sativa in range rehabilitation programs.
 

Keywords: Priming, Growth characteristics, EM, Nano-particle, Germination.

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