The amount of seeds and cones of Scots pine and the growth of the offspring

Studies conducted in the 1981-2001 period. in Perm Krai for 3-18 year old offspring 738 trees four wood-seed plots. In 15 experiments studied the height of families on the sandy, sandy and loamy soils in school and forest cultures, including repeated harvests and measurement. Found that mothers with small and medium-sized cones almost as often produce the best family as mother with big buds. A tendency to dvizusemu the selection with the benefit of mothers with serious seeds up to the age of 12 years, but further competition in the closed cultures 18 years get an advantage in the mother, the seeds of which were medium-sized and there is a trend towards stabilizing selection.