CELLULASE AND PECTINASE ACTIVITIES AND ABA CONTENT IN DROP FRUITS OF LONGAN Enzyme Assisted Ethanol Extraction of Total Flavonoids from Peony Episperm Effect of Electron Beam Irradiation on Pathogenicity and Pathogenic Enzyme Activity of Botrytis cinerea Cytochemical Localization of Pectinase Activity in Pollen Mother Cells of Tobacco During Meiotic ProphaseⅠand Its Relation to the Formation of Secondary Plasmodesmata and Cytoplasmic Channels Cytochemical Localization of Pectinase: the Cytochemical Evidence for Resin Ducts Formed by Schizogeny in Pinus massoniana Effect of lanthanum on growth and biochemical property of Sclerotinia sclerotiorum THE EFFECTS OF γ-IRRADIATION ON THE QUALITY OF APPLE