NATOMICAL STUDIES ON THE PRIMARY VASCULAR SYSTEM OF THE SEEDLING OF BRASSICA PEKINENSIS RUPR STUDIES ON THE HEREDITY OF TRANSFOMING DOMINANT INTERACTION OF NUCLAR GENE FROM BRASSICA PEKINENSIS TO B.CAMPESTRIS Effects of Crude Extracts of Paeonia decomposita Seeds on Germination and Activities of Antioxidant Enzyme of Brassica pekinensis Effects of Crude Extracts of Paeonia decomposita Seeds on Germination and Activities of Antioxidant Enzyme of Brassica pekinensis Influence of Nitric Oxide on Growth and Photosynthesis of Brassica pekinensis Seedlings under Low Light Intensity Isolation and Expression Analysis of Two Cold-Inducible Genes Encoding Putative CBF Transcription Factors from Chinese Cabbage (Brassica pekinensis Rupr.) The Influence of Exogenous Nitric Oxide on Microtubulin of Brassica pekinensis Under Drought Stress Pathogen-resistant Transgenic Plant of Brassica pekinensis by Transfering Antibacterial Peptide Gene and Its Genetic Stability