title: Essential-oil composition of the needles collected from natural populations of Macedonian pine (Pinus peuce Griseb.) from the Scardo-Pindic mountain system.
abstract: The needle-terpene profiles of two natural Pinus peuce populations from the Scardo-Pindic mountain system (Mt. Ošljak and Mt. Pelister) were analyzed. Among the 90 detected compounds, 87 were identified. The dominant constituents were α-pinene (45.5%), germacrene D (11.1%), β-pinene (10.8%), and camphene (10.3%). The following eight additional components were found to be present in medium-to-high amounts (0.5-10%): bornyl acetate (5.0%), β-phellandrene (3.4%), β-caryophyllene (2.9%), β-myrcene (0.9%), germacrene D-4-ol (0.9%), tricyclene (0.7%), (E)-hex-2-enal (0.7%), and bicyclogermacrene (0.6%). Although the general needle-terpene profiles of the populations from Mt. Ošljak and Mt. Pelister were found to be similar to those of the populations from Zeletin, Sjekirica, and Mokra Gora (Dinaric Alps), principle component analysis (PCA) of eight terpenes (α-pinene, β-myrcene, α-terpinolene, bornyl acetate, α-terpinyl acetate, β-caryophyllene, trans-β-farnesene, and germacrene D) in 139 tree samples suggested a divergence between the two population groups, i.e., the samples from the Scardo-Pindic mountain system and those from the Dinaric Alps. Genetic analysis of the β-pinene content demonstrated a partial divergence between the two geographical groups. The profiles of both population groups differed from those published for populations from the Balkan-Rhodope mountains system (literature results), which were characterized by high contents of bornyl acetate and citronellol (Greek populations) or δ-car-3-ene (Bulgarian populations).
authors.affiliation: University of Belgrade, Institute of Forestry, Kneza Višeslava 3, RS-11000 Belgrade, (phone: +38-111-3553454; fax: +38-111-2545969). smikitis@gmail.com.
authors.forename: Biljana
authors.initials: B
authors.lastname: Nikolić
authors.forename: Mihailo
authors.initials: M
authors.lastname: Ristić
authors.forename: Srdjan
authors.initials: S
authors.lastname: Bojović
authors.forename: Vlado
authors.initials: V
authors.lastname: Matevski
authors.forename: Zoran
authors.initials: Z
authors.lastname: Krivošej
authors.forename: Petar D
authors.initials: PD
authors.lastname: Marin
mesh_terms: D001688:Biological Products / Q000737:chemistry / Q000302:isolation & purification*; D009822:Oils, Volatile / Q000737:chemistry / Q000302:isolation & purification*; D028223:Pinus / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*
chemical_list: D001688:Biological Products; D009822:Oils, Volatile
keywords: Cluster analysis (CA); Dinaric Alps; Essential oils; Pinus peuce; Principal component analysis (PCA)