Abstract:The effects of exogenous glucose（Glc）on postharvest disease resistance and storage quality of apricot fruits were studied.Glc was used as a preservative and apricot fruits were treated by depressurized immersion.Subsequently，Alternaria alternata was inoculated at fruit wounds.After inoculation，the fruits were placed in cold storage，and related indexes were measured regularly.The results showed that the exogenous Glc treatment effectively curbed the growth trend of disease incidence and spot diameter，significantly promoted the accumulation of secondary metabolites such as total phenols，flavonoids，and lignin，and improved the activities of key enzymes such as phenylalanine ammonia-lyase，peroxidase，cinnamic acid-4-hydroxylase，and polyphenol oxidase in inoculated apricot fruits.Meanwhile，the treatment effectively delayed the decrease of fruit firmness and well maintained the content of titratable acid，ascorbic acid，and soluble solids in the fruits.The exogenous Glc treatment promoted the accumulation of total phenols，flavonoids，and lignin by regulating the activities of enzymes related to phenylpropanoid metabolism in apricot fruits during the storage period，which significantly enhanced the disease resistance and effectively maintained the storage quality of the fruits.