FORM STRUCTURE OF THE POPULATIONS OF COMMON SPRUCE AND SIBERIAN SPRUCE, AND POPULATION-AND-GEOGRAPHICAL STRUCTURE OF THEIR AREA
Common spruce and Siberian spruce through the whole studied territory are marked by relatively gradual population variability in the direction from south-west to north-east. A distinct gradation of the populations according to average indexes of the shape of seed scales together with their structural variability allows to determine the geographical groups of the populations with closely related phenotypic parameters.