The study of the form diversity of silver birch (Betula pendula Roth): history and modernity

The Article is devoted to the study of form diversity of drooping birch on the territory of Russia. Analyzed selected forms of birch trees. Revealed and substantiated the link between forms and productivity. The shows perspective of modern genetic research. The prove is necessity of study of the form diversity of the drooping birch in the Subarctic region.