Effect of seed collection and site altitude on the growth and genetic variability of early and late flushing provenances of Norway spruce tested in the IPTNS-IUFRO 1964/68 site in Poland
Institute of Genetics, Plant Breeding and Biotechnology, Faculty of Agrobioengineering, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland