Adaptability of Pinus sylvestris L. to various environmental conditions

Comparative anatomical studies conducted in provenance trial plantations and natural pine forests to study the anatomy of the needles and identify anatomical variability have helped to obtain the data on the formation peculiarities of vegetative shoot organs, on the variability and persistence of structural features, ways of adaptive evolution. Studies of Scots pine provenance trial plantations from the zone of deciduous forests, southern forest-steppe and dry steppe have made it possible to note that morphological and anatomical structure of the needles changes to local ecotypes. Thus, structural adaptation of assimilation apparatus to new growing conditions occurs. It determines the productivity and stability of tree stands, the duration and intensity of growth of all plant organs in general.