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The research was conducted on a provenance test of beech established in the  Educational-research centre „Majdanpečka domena” - Faculty of Forestry,  University of Belgrade. This paper presents the results of an analysis of the  morphometric characteristics of leaves, at the level of 10 provenances in the  juvenile developmental stage, originating from South-Eastern Europe. Herbaria  material was used to measure the following parameters: leaf length, leaf  width, petiole length, leaf base width at 1 cm (from petiole base), the  number of veins -on the left, the number of veins - on the right, and  distance between the 3rd and 4th vein - on the left. Based on research  results, it can be concluded that the obtained differences between the mean  values of all measured foliar characteristics of the analyzed provenances are  statistically significant, and that there is significant correlation between  the length and width of leaves and the Ellenberg’s quotient (EQ). The  relationship between the adaptive traits of beech from different provenances  and ecological parameters of their seed source stands indicates genetic  differentiation of beech, as a consequence of the population adaptation to  local environmental conditions. Therefore, in the future, ecological criteria  must be a priority in the selection of seed sources and planting materials,  with special consideration of the global climate change. [Projekat  Ministarstva nauke Republike Srbije, br. 43007: Istraživanje klimatskih  promena na životnu sredinu - praćenje uticaja, adaptacija i ublažavanje

Ecotypical characterization of genetic variation of beech provenances from south-eastern Europe based on the morphometric characteristics of leaves