Resistance of ‘Zhugenjiang’ Ginger to Ralstonia solanacearum Induced by Exogenous Methyl Jasmonate Resistance Induction of Preharvest Chitosan Oligosaccharide Treatment to Black Spot in Apricots Fruits Cloning and Sequence Analysis of Beta-1,3-glucanase Gene cDNA in Brassicacampestris ssp. chinensis Purification and Identification of a Pathogenesis-related Protein in Intercellular Fluids of Cucumber Leaves Induced by BTH Purification and Identification of a Pathogenesis-related Protein in Intercellular Fluids of Cucumber Leaves Induced by BTH