Genetic Transformation of Flowering Stalk、vith Snowdrop Lectin Gene(GNA) Establishment of Genetic Transformation System of Euonymus japonicus ‘Cu zhi‘ Mediated by Agrobacterim tumefaciens Genetic Transformation of Flowering Stalk、vith Snowdrop Lectin Gene(GNA) )Genetic Transformation of Tomato with Snowdrop Lectin Gene (GNA) Establishment of Genetic Transformation System of Euonymus japonicus ‘Cu zhi‘ Mediated by Agrobacterim tumefaciens Efficient Production of Fertile Transgenic Rice Following Particle Bombardment