Scilight Press

In the present study, iron oxide nanoparticles were synthesized by using chemical reduction method. Effect of iron oxide nanoparticles with different concentrations i.e. 150 to 600 mg/l on mungbean and okra seed germination was evaluated. Around 100% germination rate and highest germination index were observed in okra and mungbean at 450 and 600 mg/l iron nanoparticles concentration, respectively. After germination maximum shoot elongation was observed at 150 and 600 mg/l iron oxide nanoparticles concentration in mungbean and okra, respectively, while maximum root elongation was observed at 450 mg/l in mungbean and 600 mg/l in okra seeds. Maximum fresh and dry biomass was observed at 150 and 450 mg/l in mungbean and okra, while minimum was observed at 600 mg/l iron oxide nanoparticles concentration in germinated seeds i.e. mungbean and okra. Maximum shoot iron content was observed at 300 mg/l in okra and 600 mg/l in mungbean, while maximum root iron content in both mungbean and okra was observed at higher concentrations i.e. 600 mg/l. No obvious phytotoxicity to okra and mungbean at lower concentrations was observed.