%0 Journal Article %T Phenotypical and genetic breeding evaluation silver birch (Betula pendula ROTH) and downy birch (Betula pubescens EHRH.) ex situ and in vitro %A Isakov, I.Y. %A Tabatskaya, T.M. %A Vnukova, N.I. %A Mashkina, O.. %A Mikhin, V.I. %A Govedar, Z.. %K Betula pendula Roth., Betula pubescens Ehrh., self-fertility, self-sterility, juvenile age, in vitro culture, polyploidy, primary explant, multiplication factor, metaphase plate %J Forestry Engineering Journal %D 2023 %N 13 %P 17 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov