Preparation and Optimization of Mesophyll Protoplasts of Populus alba×P.berolinensis Yinzhong The Effect of Different Mixture Model of Populus alba var.pyramidalis on the Damaged Status by Anoplophora glabripennis and Tree Growth Isolation and Purification of Mesophyll Protoplasts of Populus alba L. var. pyramidalis Chemical constituents from fallen leaves of Populus alba × P. berolinensis Genetic Diversity of Section Leuce in Populus Along the Erqis River Radial pattern and time lag of sap flow in Populus alba var. pyramidalis Expression of Zinc Finger Protein Gene in Populus alba×P.berolinensis in the Infection Process by Cytospora chrysosperma Study on the soluble salt ions contents of Populus alba L.var.pyramidalis growing in salinity soils The Impact of Poplar Diameter Characteristics on Disease Index of Canker Clonal Structure and Clonal Diversity of Populus alba along the Erqis River Colchicine-induced Pollen Chromosome Doubling and its Cytological Effects in Populus alba L. Regeneration of Transgenic Poplar(Populus alba×P.glandulosa) Expressing Levansucrase from Bacillus subtilis STUDIES ON HISTOLOGY AND PHYSIOLOGY OF THE ORGANGENESIS AND SOMATIC EMBRYOGENESIS OF POPULUS ALBA× (P.DAVIDIANA×P.SIMONIIP.TOMENTOSA IN VITRO Effect of Paclobutrazol on Drought-Resistance of Populus alba × Populus berolinensis, Ulmus pumila, and Betula platyphylla The Cloning and Functional Expression of a Kunitz Trypsin Inhibitor Gene from Populus alba var.pyramidalis Sap flow dynamics of Populus alba L.×P.talassica plantation in arid desert area Over-expressing FBL1 Receptor Led to Root Formation and Growth of Populus alba×P. glandulosa cl.‘84K‘ Comparison of Genetic Linkage Maps of Populus adenopoda × P. alba Hybrid Constructed by Different Mapping Softwares Physiological Responses of Populus alba var. pyramidalis Leaves with Different Maturity to Alkali Stress Effects of Transgenic Populus alba×P.glandulosa on Soil Microorganism Water Status Change in Wood Drying Studied By Time-Domain NMR POLLEN CHROMOSOME DOUBLING UNDER HIGH TEMPERATURE IN Populus alba L.