目的 近年来，果品质量是苹果市场竞争力的主要因素，研究分析不同苹果种质资源的果实品质性状多样性，能够为新品种培育、创制新种质奠定基础。 方法 以23份苹果种质的成熟果实为材料，测定计算其单果重、去皮硬度、可溶性固形物、维生素C、可溶性糖、可滴定酸含量、糖酸比7个果实品质性状的数据并进行方差分析、相关性分析及主成分分析。 结果 分析得出这23份苹果种质的7个果实品质性状都存在不同程度的种间差异；果实糖酸比与可滴定酸、VC含量存在显著相关性，可滴定酸含量与单果重、维生素C含量相关性显著，其他各性状之间相关性不显著；主成分分析在特征值大于1时将7个品质指标综合为3个主要成分，累积方差贡献率达到73.21%，第一主成分主要代表糖酸比、VC含量、可滴定酸含量，第二主成分主要代表单果重，第三成分主要代表硬度、可溶性糖、可溶性固形物含量。 结论 23份苹果种质的单果重、去皮硬度、可溶性固形物、维生素C、可溶性糖、可滴定酸含量、糖酸比7个果实品质性状存在较大的变异差异，不同种质有其突出的果品特性，其中某项果品性状表现突出的种质资源可以考虑作为优质品种选育的亲本。

Objective In recent years, fruit quality is the main factor of the apple market competitiveness, and the diversity of fruit quality traits in different apple germplasm resources is studied and analyzed to cultivate new varieties and create new germplasm. Methods Twenty-three apple germplasms were evaluated for differences in fruit quality indicators including individual fruit weight, firmness without skin, soluble solid content, vitamin C, soluble sugar content, titratable acidity，TSS/TA. Meanwhile, these quality indicators were analyzed by correlation analysis and principal component analysis (PCA). Results The results showed that the seven quality indicators revealed a significant difference among 23 different apple germplasm. There is a significantly positive correlation between titratable acidity and vitamin C. There is a significantly positive correlation between titratable acidity and individual fruit weight. There is a significantly negative correlation between TSS/TA and vitamin C. There is a significantly negative correlation between TSS/TA and titratable acidity as well. Three major components with a characteristic value larger than 1 during PCA were extracted and the cumulative variance contribution rate was 73.21%. The first principal component represented TSS/TA, vitamin C, titratable acidity; the second principal component represented individual fruit weight; the third principal component represented firmness without skin, soluble solid content, soluble sugar content. Conclusion There is significant difference in seven fruits quality traits of twenty-three apple germplasm resources. Different germplasm has different typical traits. In these 23 apple germplasm resources, the fruit size of 'Yan Guang' is the highest. 'Huang Taiping' has the highest firmness without skin and soluble solid content. ‘Suan Wang' has the highest content of acid and vitamin C. ‘Zhang Jiakouduanzhi' has the highest soluble sugar content. The TSS/TA of 'Guo Shuai' is the highest.