This study was performed to evaluate the chemical constituents of the essential oils (EOs) from the leaves and stems of different accessions of Dorema ammoniacum D. Don and Dorema aucheri Boiss. collected in Iran. Sesquiterpene hydrocarbons were identified as the major fractions in EOs of stem (65.58-87.48%) and leaves (59.41-84.33%) samples. β-caryophyllene was identified as the major component in the EOs of leaves samples in all accessions of D. aucheri. Aromadandrene and tetradecane were identified as the major compound in stem and leaves samples of Dorema ammoniacum D. Don, respectively. The highest number of chemical constituents for leaves (27) and stem (28) samples were identified in D.au4 and D.au3 genotypes, respectively. The least number of chemical constituents for both leaves (18) and stem (19) samples were specified to D. ammoniacum species (D.am1 and D.am2). These results suggest the use of enriched-sesquiterpene hydrocarbons accessions of Dorema for future medicinal purposes.
Keywords: Apiaceae; Dorema ammoniacum D. Don; Dorema aucheri Boiss.; sesquiterpenes; β-caryophyllene.