Scots Pine (Pinus sylvestris L.) is the main forest-forming species of Poland. This work contains the results of research into the structure of wood from Scots pine trees of diverse genetic origin, grown on an experimental plot at the Forest Experimental Station in Rogów (51°49' N, 19°53' E, ca. 190 m a.s.l – central Poland). There are seven parent stands numbered: 5 (the Tucholskie Forest 130 m a.s.l.), 7 (the Napiwodzko–Ramuckie Forest 145 m a.s.l.), 10 (the Piska Forest 145 m a.s.l.), 12 (the Biała Forest 95 m a.s.l.), 13 (the Namysłowsko–Ostrzeszowskie Forest 190 m a.s.l.), 15 (the Knyszyńska Forest 165 m a.s.l.), and 16 (the Nowotarskie Forest 590 m a.s.l.). The research material came from 100 trees in total.

The aim of the study was to determine the relationship between the origin and the quality of Scots pine wood. We determined the tree-ring width (TWR) and latewood width values (LW). Tree-ring widths were measured with an accuracy of 0,01 mm using the graphic files in CooRecorder (www.cybis.se). Next, material was cross-dated (particular years were assigned to respective annual rings) and measurement accuracy was checked in CDdendro software (www.cybis.se).

Investigated origins from Forest Experimental Station in Rogów (central Poland) were shown to have a significant influence on tree-ring width (TWR) and latewood width values (LW).