Molecular Analysis, Morphological and Physiological Evaluation of the Transgen ic Citrange Plants With rolA, rolB, rolC Genes Variations of Endogenous Hormones in Lateral Buds of Olive Trees(Olea europaea) during Floral Induction and Flower-Bud Differentiation Study on the After-Ripening Physiology and Endogenous Hormones of Ginkgo biloba Seeds Effect of the Multi-Copied Gene on the Growth and the Endogenous Hormones of the Transgenic Poplar