The effect of priming with different concentrations of selenium on germination indices of quinoa seeds and seedlings

Due to its antioxidant properties, selenium has an effective role in increasing plant tolerance to adverse environmental effects.To determine the optimum concentration and priming time of quinoa seed by selenium, a factorial experiment based on a completely randomized design with three replications was carried out in the Shahed University Tehran/Iran in 2019. Experimental treatments included was different concentrations of Selenium in six levels (0, 0.5, 1.5,3,4.5,6 mg/l) and the second factor was priming time in four levels (0, 8, 12 and 24hours). The results showed Simple and interaction effect of experimental treatments on traits on germination percentage, was significant (p<0.01) on germination percentage, germination rate, mean germination time, mean daily germination, daily germination rate, germination rate coefficient, seedling length, seedling dry weight, index Longitudinal vascular length and seedling vigor weight index. Across all with the concentration of selenium increased From 0 to 3 mg / L, a significant increase was observed in most of the mean traits and with increasing selenium concentration above 3 mg / L, there was a decreasing trend in the mean traits. The highest percentage of germination (96.33) at a concentration of 3 mg / l selenium for 8 hours showed an increase of 23.5% compared to the control treatment. Also, the highest mean germination time was 6 mg of selenium and 24 hours of priming had an increase of 41.3% compared to the control treatment. Therefore, in order to improve the germination of quinoa, better results can be obtained by priming the seeds using selenium.