Abstract The aim of this study was to analyze the chemical composition of essential oils from flowers and leaves of Hyssopus officinalis L. from Esfahan province, Iran. The volatile compounds were investigated using Headspace Gas Chromatography/Mass Spectrometry in flowering stage. Twenty nine and twenty seven compounds constituting 99.84% and 99.70 of the oil were identified in the essential oil of flowers and leaves of Hyssopus officinalis L. in flowering stage, respectively. Our results demonstrated that in the flowering stage of H. officinalis L. the major constituents grown in Isafahan of essential oil from the flowers and leaves respectively were Beta-pinene (23.38%– and 31.2%), trans-Pinocamphone (19.34% and, 15.5%), Cis-pinocamphone (27.49% and, 28.1%), myrcene (6.01% and, 6.0 %) and Sabinene (5.89% and, 6.4%) Keywords: Hyssopus officinalis L., Volatile compounds, Headspace GC–MS, Beta-pinene, trans-pinocamphone, Cis-pinocamphone, Myrcene , Sabinene. پرونده مقاله

The Effects of Different Application Times of Broadleaf Herbicides on Winter Wheat Sayed Komeil Sayed Shourbalal*1 And Lida Hashemi2 1-PhD Student of agronomy, Department of Agronomy and Plant Breeding, Khorasgan (Isfahan) Branch, Islamic Azad University, Isfahan, Iran 2-PhD Student of genetic and Breeding, Department of Agronomy and Plant Breeding, Khorasgan (Isfahan) Branch, Islamic Azad University, Isfahan, Iran * Corresponding author email: komeil_shourbalal@hotmail.com Received: Accepted: ABSTRACT To Investigate the effects of different application times of broadleaf herbicides on winterwheat, a study was carried out (2015-16) in research farm of Islamic Azad University- Arak Branch as split plot experiment in randomized complete blocks design with twelve treatments and three replications. Main treatments were 2, 4-Dichlorophenoxyacetic acid (2,4-D), no herbicide, tribenuron-methyl, 2, 4-Dichlorophenoxyacetic acid (2,4-D) + tribenuron-methyl and subplots were time of using herbicides at initial establishment, tillering and start of stem elongation. Studied traits were the number of grains per spike (NGS), number of leaves per plant (NLP), spike’s dry weight (SDW), total dry weight (TDW) and grain yield (GY). According to the results, the highest GY (5.52 tha−1) was obtained from 2,4-D at start of stem elongation whereas the treatment of no herbicide at initial establishment had the lowest yield (4.12 tha−1). Also, the highest NGS (52.67) was produced by using of 2,4-D application at start of stem elongation which was not different from application 2,4-D at two other times. The lowest NGS (41) was belonging to no herbicide treatment. Keywords: 2,4-D, Tribenuron methyl, Tillering, Grain yield, Winter wheat پرونده مقاله