Factor analysis and comprehensive evaluation of fruit quality of ‘Jinyan’ kiwifruit (Actinidia eriantha×Actinidia chinensis)
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摘要: 以四川省53家果园的猕猴桃（Actinidia）品种‘金艳’（A.eriantha×A.chinensis ‘Jinyan’）果实为材料，测定其软熟时的单果重、色彩角、硬度、可溶性固形物含量、总糖含量、总酸含量、糖酸比、软熟率、病果率及采收时的干物质含量等10个品质指标，并进行主成分分析，对‘金艳’果实品质评价中的主要影响因子以及适合的果实品质评价方法进行分析。结果显示：按方差贡献率大小前6个成分的特征根大于0.8，累计方差贡献率为88.57%；综合分值排名前3位的果园分别为DJY1、GY4和GY1。主成分分析法提取并分析了前6个贡献率较高的主成分，结果表明该方法适合‘金艳’果实以采收干物质、软熟色彩角、硬度、可溶性固形物含量、总糖、糖酸比等为基础的综合果实品质评价。Abstract: Ten indices of fruit quality of the ‘Jinyan’ kiwifruit (Actinidia eriantha ×A. chinensis) were measured from 53 orchards in Sichuan Province, China, and included fruit weight, hue angle, firmness, soluble solids content, dry matter, total sugar, total acid, sugar-acid ratio, ripening rate, and diseased fruit rate. These indices were analyzed by principal component analysis (PCA) to identify the major factors and establish a fruit quality evaluation system for ‘Jinyan’. Results showed that the first six principal components (PC1-PC6) all had characteristic roots of more than 0.8 and showed a cumulative contribution proportion of 88.57%. The top three orchards with the highest comprehensive scores were DJY1, GY4, and GY1, respectively. Thus, PCA was suitable for the comprehensive quality evaluation of ‘Jinyan’ and provided important information for cultivation, management, and quality improvement.
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Keywords:
- ‘Jinyan’ /
- Fruit quality /
- Comprehensive evaluation /
- Principal component analysis
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