Assumption that forest reproductive material is better adapted to local conditions is the basis of current forest policy that promotes the use of local material. Genetic diversity and structure of two approved seed stands and three nonapproved stands of Fraxinus excelsior L. were analysed with nuclear microsatellites to get genetically based support for the use of its reproductive material in Slovenia. Genetic diversity was high (HE = 0.80) and diff erentiation between populations measured as FST (FST = 0.018) low to nonexistent when measured with genetic distances. Calculated allelic indices for seed stands were the same or a bit above the Slovenian average with two exceptions. Based on the analysis of fi ve microsatellite loci, no restrictions for transferring forest reproductive material within the studied range can be presented. However, collection of forest reproductive material from seed stand Rodik should follow good seed collection practices to ensure high genetic diversity of reproductive material.
COBISS.SI-ID: 3405990
Beech is a climax species, so we have to take into account at least some of its basic ecological characteristics, when designing regeneration strategies: 1) irregularity and unpredictability of beech crop years, 2) beech pollen in stand extends mostly to distances up to 100 m, 3) the distance of fallen seeds generally does not exceed a distance of 20 m from the parent tree, 4) beech regeneration is sensitive to frost, drought, browsing and competition from herb layer, 5) shade-tolerant beech is a species that achieves the best stem quality at higher densities and in moderately open stands, and this greatly reduces the possibility of admixture of light demanding species.
COBISS.SI-ID: 3529126