STUDY ON THE SECONDARY METABOLIC REGULATION OF CALLUS OF Panax quinquefolium L. Genetic Transformation of Soybeans by Soaking Its Seeds with the Total DNA of America Ginseng (Panax quinquefolium) Ⅰ. Analysis on the Variation of Soybean Morphologic Characters Induced by Foreign DNA Uptake Isolation and purification of polysaccharides from transgenic crown gall cultures of Panax quinquefolium Rare constituents with anti-cancer activity from hydrolytic products in saponins of Panax quinquefolium stems and leaves Allelopathic effect of p-coumaric acid on American ginseng and its physiological mechanism Biosynthesis of arbutin from crown gall of transgenic Panax quinquefolium Autotoxicity and promoting: dual effects of root litter on American ginseng growth Cloning and sequence analysis of PqGA20ox gene in Panax quinquefolium Chemical constituents from crown gall of transgenic Panax quinquefolium (II) Isolation of endophytes from Panax quinquefolium and screening and identification of strains with antagonistic activity Cloning and sequence analysis of PqGA2ox gene in Panax quinquefolium THE STUDY ON THE RELATIONSHIP BETWEEN CELL DIFFERENTIATION AND SAPONIN FORMATION OF Panax quinquefolium L.CALLUS SUSPENSION Chemical constituents from crown gall of transgenic Panax guinguefolium (II) Allelopathy of water extract from Panax quinquefolium, Perilla frutescens,and Coix Lacryma-jobi PLANT MORPHOLOGY OF DOUBLE STEM PANAX QUINQUEFOLIUM L