application/pdf 14256875 bytes info:eu-repo/semantics/conferenceProceedings "In order to preserve available sessile oak genepool in the area of eastern Serbia and to control usage of genetic resources, intrapopulation and interpopulation research has been conducted on the basis of leaf morphological traits. In July of 2020, 86 trees of phenotypically highest quality and good health condition were selected in three populations, being the carriers of sessile oak (Quercus petraea (Matt.) Liebl) reproductive material production, from which undamaged leaves were collected. On the basis of 11 measured morphometric parameters and one derived relation on the sample of 50 leaves per tree, the intrapopulation and interpopulation variability have been determined. The descriptive and multivariate statistic methods were used in the research. Research results indicate high variability of investigated populations. The least variable trait was the length and width relation of a leaf (CV = 13.24%), while the most variable trait was leaf area (CV = 45.39%). Populations were statistically significantly different in all examined leaf morphological traits (p<0.01; α = 0.05) according to analysis of variance. Although interpopulation variability was statistically significant, the level of intrapopulation variability was significantly higher (43.6-57.3%) in relation to the interpopulation differentiation (7.2- 18.6%). According to obtained results, it can be stated that available sessile oak genepool is characterized by a satisfying level of genetic variability. The obtained results should be accepted as the preliminary ones, which are presenting a good basis for the long-term preservation and ecological adaptability improvement and evolutionary potential of the sessile oak population, by implementing adequate in situ and ex situ conservation measures." All rights reserved Sessile oak (Quercus petraea (Matt.) Liebl) variability in the area of eastern Serbia according to leaf morphological traits. XIII International Scientific Agriculture Symposium “AGROSYM 2022”. BOOK OF ABSTRACTS Sessile oak, population, genepool, variability https://unilib.phaidrabg.rs/o:3806 east Sarajevo: Faculty of Agriculture eng 2022 Поповић, Владан Лучић, Александар Јовановић, Сања Ракоњац, Љубинко