In collaboration with Scientific Association of Iranian Medicinal Plants

Document Type : Research Paper

Authors

1 Department of Biology, Faculty Of Science, Islamic Azad University, Tehran-North Branch, Iran

2 Department of Medicinal Plants, Research Institute of Forest and rangelands, Tehran, Iran

Abstract

The purpose of this study was determining the effects of different nitrogen and phosphorus doses on the plant growth parameters, yields and essential oil composition of Artemisia annua L. The effect of nitrogen (urea 46%) and phosphorus (Triple super phosphate %48) at four levels (0, 40, 80, 120 kg/ha) were examined. Experiments were designed based on Randomized CompleteBlock with 16 treatments and 3 replicates. Results indicated that differences between the average of height, number of branches and dry weight were significant at p≤0.05. The maximum of branches number and height of plant were gained in the N40P40 and N80P40 treatments. Increasing of P fertilizer more than 80 kg/ha decrease the growth parameters  significantly. Essential oil of leaves at flowering stage was obtained by hydro-distillation. Percentage of essential oil showed significant increase in N40P0 and N80P0 treatments. Chemical compounds of leaf oil were identified by GC/MS. Twenty four components were found which the major compounds were artemisia ketone, camphor, 1,8-cineole, artemisia alcohol, viridiflorene and alpha-pinene

Keywords

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