Construction of Expression Vector and Function Analysis of LfMADS Genes from Lilium The Construction of Expression Vector of Gene CBF from Vitis amurensis and the Effects of It on the Root Growth of Arabidopsis Cold Tolerance of Transgenic Tobacco Carrying Gene Encoding Insect Antifreeze Protein Construction of Expression Vector and Function Analysis of LfMADS Genes from Lilium Construction and transformation of an over-expression plasmid of the MsZIP gene from Medicago sativa Construction of ihpRNA Expression Vectorof MsLEA3-1 Gene from Medicago sativa L. and Genetic Transformation in Tobacco Cloning and Characterization of a GDP Dissociation Inhibitor Protein Gene from Medicago sativa L. and Expression in Tobacco Over-expression vector construction and genetic transformation of a protein kinase NtCIPK2 from Nitraria tangutorum Construction of Root Expression Vector of Brassinosteroid Gene BAS1 and Genetic Transformation into Tobacco