45 ORIGINAL SCIENTIFIC PAPER Variability of generative offspring of field maple (Acer campestre L.) in nursery testing UDK 582.746.51:575.2(497.6 ŽEPČE) DOI 10.54652/RSF.2022.V52.I1.370 Variability of generative offspring of field maple (Acer campestre L.) in nursery testing Varijabilnost generativnog potomstva klena (Acer campestre L.) u rasadničkom testiranju Ballian Dalibor 1 , Memišević Hodžić Mirzeta 1, * , Murlin Miroslav 2 , Kvesić Stjepan 3 1 Šumarski fakultet Univerziteta u Sarajevu 2 JP Šume Zenikodobojskog kantona d. o. o. Zavidovići 3 JP Šume središnje Bosne d. o. o. Donji Vakuf ABSTRACT Field maple (Acer campestre L.) is naturally distributed in most of Europe, with the exception of its northern parts. Field maple can serve as a valuable model for researching the sensitivity of its populations to habitat fragmentation, considering the lack of silvicultural treatments in its stands. The research aims to determine the interpopulation and intrapopulation variability of feld maple populations from Bosnia and Herzegovina in the nursery test. The authors researched measured root collar diameter, height, observed forkness and calculated slenderness coeffcient of the one-year-old generative material from 18 Bosnian-Herzegovinian populations of feld maple, produced in the nursery of Žepe. The descriptive statistics and variance analysis was performed. All analyzed traits showed a high degree of intrapopulation as well as interpopulation variability, as confrmed by the analysis of variance.The highest average height was found in the provenance Bosanski Brod (46.08 cm) and the smallest in Bosanska Dubica (19.11 cm). Kreševo provenance had the highest average root neck dia- meter (8.27 mm) and Bosanska Dubica (5.24 mm) the lowest. A very low percentage of forkness (6.86%) was determined, and the values of the slenderness coeffcient were acceptable for all provenances. The results indicate the need for further systematic research on this ecologically valuable species. * Corresponding author: Memišević Hodžić Mirzeta, m.memisevic-hodzic@sfsa.unsa.ba Key words: feld maple, variability, root collar diameter, height, forkness, slenderness INTRODUCTION – Uvod Moderno šumarstvo u Bosni i Hercegovini i u svijetu ti- jekom svog razvoja, u sklopu oplemenjivanja šumskog drveća, vršilo je mnogobrojna istraživanja koja su dala nemjerljivo vrijedne rezultate u smislu dobivanja pri- marnog cilja, a to je identifciranje jedinki ili populacija koje daju najveću proizvodnu masu te sa ekološkog as- pekta zadovoljavaju sve kriterije. Raznim metodama rada (npr. izdvajanje sjemenskih sastojina, podizanje mnogobrojnih pokusa-testova, podizanje generativnih ili klonskih sjemenskih plantaža, itd.), te dugogodišnjim is-