Investigating the Effect of Green Nanoparticles of Silver (AgNPs) and Gibberellic Acid (GA) on Some Morphophysiological and Germination Characteristics of (Astragalus Gossypinus Fisher)

For this purpose, this study was carried out with the aim of the best treatment for breaking the dormancy and improving the germination characteristics of white currant seed under the influence of various chemical and physical treatments. (Astraglus gossypinus) Fisher. Is one of the most valuable and productive plants of the highest quality gum, which is very important in protecting the soil and economy of the country. In order to investigate the effect of silver nanoparticle (AgNPs) and Gibberellic acid (GA) on (Astraglus gossypinus) germination, a factorial experiment was conducted in a completely randomized design (CRD) with 4 replications in 1397. Experimental treatments consisted of priming with gibberellic acid in 4 levels (0 as control, 100, 150 and 300 ppm) and silver nanoparticles in 4 levels (0 as control, 0.05, 0.1 and 0.2 W/V) for 4 hours at 25 ° C. The results of the experiments showed that gibberellic acid, silver nanoparticles, and interactions of treatments at 1% probability level on all studied traits including germination percentage, root length, stem length, germination coefficient, and relative water content, chlorophyll a, b and total chlorophyll were significant. Also, the use of 100 ppm gibberellic acid increased the root length by 25%, but with increasing gibberellic acid concentration, root and shoot length decreased compared to control.