ANATOMICAL PECULIARITIES OF CONDUCTING UNDERGROUND TISSUES IN <i> PINUS SYLVESTRIS</i> L. AND <i>LARIX SUKACZEWII </i> DYL. UNDER EXTREME FOREST-SITE CONDITIONS
The developmental peculiarities of conducting underground tissues in Pinus sylvestris L. and Larix sukaczewii Dyl. growing under extreme forest-site conditions have been studied. The adaptive species-specific changes in the tree anatomical organization have been revealed.