%0 Journal Article %T Production technology of the planting material of the poplar grades which is turning gray by In Vitro method for creation of plantation crop %A Sivolapov, A.. %A Tabatskaya, T.M. %A Mashkina, O.. %A Sivolapov, V.A. %K varieties of poplar, technology in vitro, planting material, specialized plantations %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 3 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov