EFFECT OF COBALT NANOPARTICLES ON GERMINATION AND GROWTH OF GLYCINE MAX

Abstract

     In this study, the Glycine max seeds were treated with cobalt nanoparticles (CoNPs) at different concentrations 0,5; 2,5; 5; 25; 50; 250; 500; 1000 mg/L. In the pre-sowing treatment of soybean seeds, the size of CoNPs ranging from 20nm to 60 nm was used. The results showed that: pre-sowing treatment of soybean seeds with CoNPs effected the germination rate, the growth of root's and shoot's length, and the chlorophyll content. Optimal concentration of CoNPs was found to be from 0,5 to 5 mg/L. The shoot length increased by 2 cm - 3 cm and the chlorophyll index increased by 7-18% in comparison with the control sample. The inhibitory effect of cobalt appeared at a concentration of 50 mg/L significantly reducing seedling growth, root development and chlorophyll.