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This study investigated the seed source effect on the physical properties of exotic Scots pine (Pinus sylvestris). For this purpose, nine clear pine trees grown from the Spanish, Armenian and Serbian (part of former Yugoslavia) seed sources were selected from the Vanamak-Neka (eastern part of Mazandaran province) and a disc was cut from each tree at breast height. Testing samples were prepared based on the ISO standard to estimate the oven-dry density, basic density, volumetric shrinkage and volumetric swelling. Then, the results were studied by using the variance analysis test (ANOVA) and Duncan’s table. The results indicated that the effect of seed sources on the above mentioned properties were significant. All of the physical properties of Scots pine grown from the Spanish seed source were higher. There were no significant differences between the Armenian and Serbian seeds in the density and dimensional changes of the wood (volumetric swelling and volumetric shrinkage). The relationships between different wood properties were analyzed by applying the linear regression. There was a weak and negative relationship between oven-dry and basic density and longitudinal and diametrical growth of the trees. The correlation between oven-dry density and dimensional changes of the wood showed that there was a positive relationship between the mentioned properties in all the three seeds, while the correlation coefficient of the Armenian seed was stronger than that of the other two seeds.U radu se prikazuje istraživanje utjecaja podrijetla sjemena na fizikalna svojstva egzotičnog drva običnog bora (Pinus sylvestris). Za tu svrhu sa staništa Vanamak-Neka (istočni dio pokrajine Mazandaran) izdvojeno je devet čistih stabala običnog bora čije je sjeme podrijetlom iz Španjolske, Armenije i Srbije (bivša Jugoslavija) te je ispiljen disk na prsnoj visini svakog stabla. Ispitni uzorci pripremljeni su na temelju ISO standarda za određivanje gustoće apsolutno suhog drva, standardne gustoće, volumnog utezanja i volumnog bubrenja. Zatim su rezultati analizirani uz pomoć testa analize varijance (ANOVA) i Duncanove tablice. Rezultati su pokazali da je utjecaj izvora sjemena na navedena svojstva značajan, tako da su sva istraživana fizikalna svojstva imala najveće vrijednosti za drvo običnog bora od sjemena iz Španjolske. Nije bilo značajne razlike između gustoće i promjena dimenzija (volumno utezanje i volumno bubrenje) za drvo čije je sjeme podrijetlom iz Armenije i Srbije (bivša Jugoslavija). Odnosi među različitim svojstvima drva analizirani su primjenom linearne regresije. Utvrđena je slaba i negativna ovisnost gustoće apsolutno suhog drva i standardne gustoće o visini i promjeru drveća. Korelacija između gustoće apsolutno suhog drva i promjena dimenzija drva pokazala je da postoji pozitivna ovisnost za sva tri sjemena različitog podrijetla, s tim da je koeficijent korelacije veći za sjeme iz Armenije nego za sjeme s druge dvije lokacije

Effect of Seed Source on Physical Properties of Scots Pine (a Case Study in Neka, Iran)