Studies on Chemical Constituents in the Fruit of Canarium album Raeusch Studies on Sampling Schemes of Core Collection of Canarium album L. in Eastern Guangdong, China Relationship between Activities of Sucrose-metabolizing Enzymes and Sugar Accumulation in Fruit during Chinese Olive Development Main chemical components for clearing heat and relieving sore throat in different germplasm of Canarium album STUDY ON THE BIOLOGICAL CHARACTERISTICS OF INVOLVULUS HARADAI (COLEOPTERA:ATTELABIDAE)