TY JOUR TI Evaluation of the stability of the balsam poplar (Populus balsamifera L.) under conditions of mass leaf rust infestation KW development stability KW fluctuating asymmetry KW poplar (Populus balsamifera L.) KW poplar leaf rust KW brown spotting JO Forestry Engineering Journal AU Runova, E.M. AU Puzanova, O.A. AU Novoselova, O.I. PY 2026 IS 16 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov