ECHINOCH LOA CRUS-GALLI و )LEPIDIUM SATIVUM( بر علفهاي هرز )ZHUMERIA MAJDAE( بررسي اثرات آللوپاتيك اسانس گياه مورخوش

Study of allelopathic effects of essential oils of Zhumeria majdae on Lepidium sativum and Echinochloa crus-galli

In present research,allelopathic potentials of essential oils of Zhumeria majdae leaves were studied. Effects of different concentrations of essential oils on seed germination and seedling growth of, Lepidium sativum and Echinochloa crus- galli were studied.Besides,effects of essential oils on the leaf chlorophyl In present research,allelopathic potentials of essential oils of Zhumeria majdae leaves were studied. Effects of different concentrations of essential oils on seed germination and seedling growth of, Lepidium sativum and Echinochloa crus- galli were studied.Besides,effects of essential oils on the leaf chlorophyl content,fresh and dry weight of root and stem and peroxidase activity in roots of 21-days seedlings above plants in post-emergence treatment were investigated. Essential oils prepared from leaves of Zhumeria majdae inhibited seed germination and seedling growth drastically. In the presence of 50 and 100 percent of stock solution,seed germination rate was reduced to zero.The activity of peroxidase enzyme, fresh and dry weight and chlorophyl content was reduced in all post-emergence treated plants.