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Abstract:
An investigation was conducted to study the chemical diversities among 44 accessions of Damask rose (Rosa damascena Mill.) essential oils collected in Iran. Gas chromatography (GC) and GC/mass spectrometry (GC-MS) were employed to determine the chemical compositions of essential oils which were hydro-distilled from flowers at full bloom stage. Results showed that the essential oils of these accessions had considerable variabilities for major and minor components. Cluster analysis, based on oil compositions, was used to classify studied accessions. It was shown that these 44 accessions of Damask rose had five distinct chemotypes namely citronellol (18.8-45.8 %), geraniol (37.5-41.4 %), neral (23.2-44.8 %), Dihydro-linalool (30.5-59.2 %), and n-nonadecane (20.6-55.4 %).
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