Zróżnicowanie morfologiczne szyszek daglezji zielonej (Pseudotsuga menziesii [Mirb.] Franco) w Polsce

The paper presents results of studies on population variability of Douglas fir (Pseudotsuga menziesii [Mirb.] Franco) cones. The studies were based on statistical analysis of cone morphological characteristics, seed scales and bract of populations originating from 12 sites. The analysis proved morphological variability of cones and scales. They did not show geographical variation and did not clearly confirm their demographic variation. The edaphic conditions and genetic diversity were found to affect the demonstrated variability.