| Selection of factors for apple fruit quality evaluation |
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| DOI：10.7606/j.issn.1000-7601.2011.06.48 |
| Key Words: apple fruit quality principal component analysis cluster analysis evaluation factor |
| Author Name | Affiliation | | XU Jihua | College of Horticulture, Northwest A8F University, Yangling, Shaanxi 712100,China | | ZHAO Zhengyang | College of Horticulture, Northwest A8F University, Yangling, Shaanxi 712100,China | | WANG Lei cun | College of Horticulture, Northwest A8F University, Yangling, Shaanxi 712100,China | | GAO Hua | College of Horticulture, Northwest A8F University, Yangling, Shaanxi 712100,China | | LIU Zhenzhong | College of Horticulture, Northwest A8F University, Yangling, Shaanxi 712100,China | | FAN Hongke | College of Horticulture, Northwest A8F University, Yangling, Shaanxi 712100,China |
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| Abstract: |
| A total of 15 quality parameters were determined for ten apple varieties such as Starkrimson, Qinguan,
Jonathan in this study . Quality parameters included fruit weight, soluble solid content (SSC)， fruit color, and titratable acidity. The data were analysed using principal component and cluster analysis. F our comprehensive evaluation indices were extracted by principal component analysis with eigenvalue of over 1 and a cumulative contribution of 93.275%. The four indices represented the characteristics of the apple varieties. F our varieties were selected according to the principal component scores， these were Ralls，New Jonagold, Red Gala and Pink Lady . The five most important fruit quality pa-rameters were fruit weight or fruit shape index，fruit firmness，SSC, titratable acidity and fruit colour according to cluster
analysis. Principal component and cluster analysis readily separated and prioritized apple fruit quality parameters for eval-uation and selection purposes. |
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