عنوان مقاله [English]
Although production of secondary metabolites is controlled by genes their production amounts are significantly affected by environmental conditions. This study aimed to investigate the effects of some major site ecological factors on essential oil and chemical composition in Myrtus communis L. ecotypes. For this purpose, 13 major sites in the Lorestan province were recognized. After reconnaissance some ecological properties were measured and leave samples were collected to obtain essence. Leaves samples were dried and distillated by Clevenger apparatus and chemical composition were identified by GC and GC/MS. Canonical correspondence analysis, CCA, were used to investigate the effects of major ecological factors on chemical composition amounts contained in essence. Results showed that altitude and aspects as primary factors and soil nutrients such as Phosphorus, Organic carbon, Potassium and Nitrogen as secondary factors affect on myrtle essential oil and chemical composition amounts.