Effects of hormonal and magneto-priming on seed germination traits of sorghum (Sorghum bicolor L. Moench)

Abstract

Sorghum (Sorghum bicolor L. Moench) seeds were tested to discover how different priming techniques affected their germination rates, a pot experiment was conducted by the combination procedures for seed priming with magnetic fields (magneto-priming) and hormonal priming seed with gibberellic acid (AG3) or ascorbic acid (AsA). Final germination percentage (FGB), mean germination time (MGT), germination rate index (GRI), coefficient of the velocity of germination (CVG), mean daily germination (MDG), peak value (PV), and germination value (GV) are all included as germination metrics. Among the two durations of exposure time to magneto-priming used, the significantly highest FGB, GRI, CVG, MDG, PV and GV were reported in the primed with the time duration 1 h (MP2), significantly lowest MGT for MGT in days. Whereas among the two hormonal primings used, GA3 recorded the highest increases upon the unprimed seeds for FGB, GRI, CVG, MDG, PV, and GV, in addition, significantly lowest MGT for MGT in days. However, when magnetic seed is combined shows the highest increase rates compared to the control treatment for time exposure for 1 h (MP2) with GA3 or AsA in all studied traits, in addition to the lowest rates decrease in MGT. Overall, the findings imply that seed priming by magnetic field and hormone priming via GA3 or AsA may be promising and practical priming techniques because of their favorable impacts on some physiological sorghum characteristics. Keywords: Wheat, physiological parameters, gibberellic acid, UV-C radiation, hydro-priming.