Mass Losses and Nitrogen and Phosphorous Dynamics during the Decomposition of Different Organic Residues of Triploid Populus tomentosa Isolation and Expression of Eukaryotic Translation Initiation Factor 5A2 in Populus tomentosa PERIODICITY OF CAMBIUM ACTIVITY AND CHANGES OF PEROXIDASE ISOZYMES IN POPULUS TOMENTOSA CARR. ANALYSIS OF PHYSIOLOGICAL AND BIOCHEMICAL CHARACTERISTICS RELATED TO CUTTING AND ROOTING OF CHIMERA IN POPULUS TOMENTOSA CARR. TESTING ON THE ANTAGONISM OF THE DOMINANT OF ENDOPHYTIC FUNGI FROM POPULUS TOMENTOSA,CHAETOMIUM ND35 IN THE LABORATORY STUDIES ON SELECTION OF NATURAL TRIPLOIDS OF POPULUS TOMENTOSA Studies on the Antipyreiic and Analgesic Constituents of Leaves of Populus tomentosa Carr Separation and Determination of Phenolic Glycosides in Chinese White Poplar Leaves (Populus tomentosa) by HPTLC