The results of previous studies have shown high breeding values of Beskidian spruce. The aim of the study was
to assess the genetic structure of seventeen Norway spruce provenances from the Beskidy Mts. tested in IPTNSIUFRO
1964/68 experiment in Krynica, which survived after massive wind damage on the plots. Polymorphism of
five isozyme systems encoded in five loci was determined. The highest value of genetic diversity parameters: mean
number of alleles per locus and observed heterozygosity was noted for progeny of spruce from the Eastern Beskidy
Mts. (Na = 1.47, Ho = 0.15), and the lowest – for the provenance from the Western Beskidy Mts., Babia Góra massif
and the Beskid Sądecki Mts. (Na = 1.27, Ho = 0.12). Mean genetic distance between analyzed spruce provenances
was equal to 0.027.