Abstract:To investigate the changes in quality and texture of plum fruits during room temperature storage，fruits of three plum cultivars （'Guofeng 2'，'Guofeng 7'，and 'Guofeng 17'） were used as experimental materials. Under room temperature storage conditions，the dynamic changes in quality indices （firmness，weight loss rate，soluble solids content，titratable acidity，color difference，and respiration intensity） and textural characteristics （rupture force，compression work，and adhesiveness） were periodically measured. Correlation analysis and comprehensive evaluation scoring were conducted. The results indicated that the shelf lives of the three plum cultivars were 4 days for 'Guofeng 2'，5 days for 'Guofeng 7'，and 6 days for 'Guofeng 17'. Comprehensive scores revealed that at harvest and during the first two days of storage，the quality in descending order was consistently 'Guofeng 7'＞'Guofeng 17'＞'Guofeng 2'. However，from the third day of storage onward，the ranking shifted to 'Guofeng 17'＞'Guofeng 7'＞'Guofeng 2'. The 'Guofeng 7' fruits exhibited a slower initial quality decline followed by rapid deterioration in later stages. The quality deterioration of 'Guofeng 17' fruits remained relatively stable throughout storage. 'Guofeng 2' fruits consistently maintained the lowest quality level. Principal component analysis （PCA） results for principal component 2 （PC2） suggested that the storage characteristics of 'Guofeng 2' and 'Guofeng 17' were more similar under room temperature conditions. This study，by comparing the differential quality changes among the three plum cultivars during room storage，provides scientific insights and theoretical references for determining the optimal shelf life of distinctive plum varieties.