Abstract:
By the principal component analysis and cluster analysis, 12 main fruit quality index of Fuji apple were determined, generally including external, internal and processing quality, detailed including the weight of single fruit, skin color and luster, soluble solid content, acidity and hardness etc, the purpose was to be more intuitive compare the difference of Fuji apple’s quality with 10 different regions, including Luochuan, Ansai and Tongchuang etc.The results showed that the quality of the simplified evaluation index were weight of single fruit, fruit shape index, soluble solid content, acid and juice yield.Extracting five main components from 12 principal fruit quality evaluation, it could reflect the most of the information about quality and its contribution rate reached 85.439% .It got an order from high to low about Fuji apple’s comprehensive quality with different regions, Akesu>Jingning>Sanmenxia>Yantai>Yan’an>Ansai>Tianshui>Luochuan>Tongchuan>Fufeng.