Effects of Postharvest 1-MCP and Calcium Treatments on the Quality andSkin Browning Spot Incidence of Huangguan Pear Fruit Optimizing the Method of Acetone Powder to Extract Polyphenoloxidase from Honeysuckle Using Response Surface Methodology Relationship between Some Enzyme Activity and Resistance to Sclerotinia sclerotiorum of Rapeseed Cultivars The Changes of Some Enzymes Activities from Cucumber Leaves after Inoculation with Cucumber Powder Mildew Effect of heavy metal Cu on compost materials property and oxidoreductase activity during pig waste composting The Cycles of Nutrient Elements of Copper and Molybdenum and Polyhenolxidase’s Activities of Larix principis-rupprechtii Effect of Pine Wood Nematode(PWN) Infection on PhenylpropanesMetabolism in Masson Pine Seedlings Effects of Postharvest 1-MCP and Calcium Treatments on the Quality andSkin Browning Spot Incidence of Huangguan Pear Fruit Interaction between Eichhornia crassipes and its rhizospheric bacteria Effect of endophytic fungi on the culture and four enzyme activities of Anoectochillus formosanus ACTIVITIES CHANGES OF BROWNING ENZYMES DURING RHIZOME SWELLING OF LOTUS