Variability of the Needle Essential Oils of Juniperus deltoides R.P.Adams from Different Populations in Serbia and Croatia |
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Authors: | Nemanja Rajčević Peđa Janaćković Srđan Bojović Vele Tešević Petar D. Marin |
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Affiliation: | 1. Institute of Botany and Botanical Garden ‘Jevremovac', Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia;2. Institute for Biological Research ‘Sini?a Stankovi?', University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia;3. Faculty of Chemistry, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia |
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Abstract: | The essential‐oil compositions of one Croatian and three Serbian populations of Juniperus deltoides R.P.Adams have been determined by GC/MS analysis. In total, 147 compounds were identified, representing 97.3–98.3% of the oil composition. The oils were dominated by monoterpenes, which are characteristic components for the species of the section Juniperus. Two monoterpenes, α‐pinene and limonene, were the dominant constituents, with a summed‐up average content of 49.45%. Statistical methods were used to determine the diversity of the terpene classes and the common terpenes between the newly described J. deltoides populations from Serbia and Croatia. Only reports on several specimens from this species have been reported so far, and there are no studies that treat population diversity. Cluster analysis of the oil contents of 21 terpenes showed high correlation with the geographical distribution of the populations, separating the Croatian from the Serbian populations. The comparison of the essential‐oil compositions obtained in the present study with literature data, showed the separation of J. deltoides and J. oxycedrus ssp. oxycedrus from the western Mediterranean region. |
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Keywords: | Juniperus deltoides Essential oils Principal‐component analysis (PCA) Hierarchical cluster analysis (HCA) Discriminant analysis |
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