ﺑﺮرﺳﻲ اﺛﺮ ﻣﻴﺪان ﻫﺎی اﻟﻜﺘﺮوﻣﻐﻨﺎﻃﻴﺴﻲ ﺑﺮ ﺟﻮاﻧﻪ زﻧﻲ ﺑﺬرﻫﺎی ﮔﻴﺎه ﮔﺰﻧﻪ (.Urtica diocia L )

Abstract
The study of electromagnetic fields on plants growth and other living beings are one of the important subjects which attract the attention of most researchers therein. In this research,the effects of electromagnetic fields on germination on seeds, of Urtica dioica L. was studied.Seed of this plant were put under electromagnetic field by 0.8 mT& 1.6 mT,for duration of 5,10 & 20 minutes.This test also performed on dry seeds and also after 48 hours wet seeds.Under this condition ,germination velocity and percentage of treated seeds were increased against control.Except one item in which germination percentage was decreased against control about wet seeds which put under electromagnetic field by 0.8 mT for 20 minutes duration.Among treated samples,electromagnetic field by 0.8 mT in 5 minutes duration and 1.6 mT in 10 minutes duration in dry seeds and for 5 minutes duration in wet seeds shows the fastest germination.