Studies of Transgenic Hybrid Poplar 741 Carrying Two Insect-resistant Genes SELECTION AND INSECT RESISTANCE OF TRANSGENIC HYBRID POPLAR 741 CARRYING TWO INSECT-RESISTANT GENES Researches on the insect-resistant effect of transgenic hybrid poplar 741 with two insect-resistant genes Effect of Different LED Light Qualities on Bt Toxic Protein Content and Chlorophyll Fluorescence of Transgenic Poplar Leaves Life Table of Population of Target Insect in the Stands of Transgenic Hybrid Poplar 741 Influence of temperature on insect-resistance of transgenic hybrid poplar 741. Analysis of Main Characteristic of White Poplar Hybrid 741 Transformed Two Insect-Resistant Genes Immunogold Silver Localization of Indole-3-acetic Acid (IAA) During the Rhizogenesis of In Vitro Poplar Insect Resistance Selectivity of Transgenic Hybrid Poplar 741 A CHARACTER ANALYSIS OF A NEW POPLAR CLONE 741 Growth and Wood Property of Poplar 741