| 陆育生，林志雄，曾杨，邱继水，常晓晓，潘建平.基于多元统计法的黄皮果实品质评价指标的选择[J].广东农业科学,2014,41(23):39-42 |
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基于多元统计法的黄皮果实品质评价指标的选择 |
| Selection of indices for wampee fruit quality evaluation based on multivariate statistics |
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| DOI： |
| 中文关键词: 黄皮 果实品质 主成分分析 聚类分析 |
| 英文关键词: wampee fruit quality principal component analysis cluster analysis |
| 基金项目:广东省科技计划项目（2012B020302007）；农业部热带作物种质资源保护项目（13RZZY-20）；科技部尧财政部国家科技基础条件平台项目（2012-067-04） |
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| 摘要点击次数: 1307 |
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| 中文摘要: |
| 为科学地简化黄皮果实品质的评价指标，以22 份不同黄皮种质为试材，采用主成分分析和系统聚类法对测得的果实单果重、果形指数、可食率、可溶性固形物含量、可滴定酸含量、总糖含量、维生素C 含量等13 项常规指标进行分析遥主成分分析结果表明，这13 项指标反映的黄皮果实品质可用3 个主成分来表示（累计贡献率达84.8951%）。根据这3 个主成分对13 项品质指标的特征向量进行系统聚类，可将这些指标划分为5 类。从这5 类指标中分别选取单果重、果形指数、可滴定酸、总糖及糖酸比5 个简化指标对黄皮果实品质进行聚类分析，在欧氏距离2.07 时，可将供试的22 份不同种质分为3 类，这一结果与实际口感评价结果相吻合。 |
| 英文摘要: |
| In order to simplify the indices for evaluating fruit quality without losing the information embodied in the original indices, 13 fruit quality indices including single fruit weight, fruit shape index, edible rate, total soluble solid content, titratable acid content, total sugar content, vitamin C etc. for 22 different wampee germplasm were analyzed by using multivariate statistics. Results of principal component analysis with the above 13 indices indicated that the cumulative proportion of former 3 principal components reach 84.8951%. By using systematic cluster analysis with eigenvectors of the former 3 principal component, 5 evaluation factors for a comprehensive system were obtained, and the single fruit weight, fruit shape index, titratable acid, total sugar, fruit sugar acid ratio were selected as simplified indices. The cluster analysis of fruit quality in wampee by this 5 selected indices showed that the fruit quality from 22 different germplasm resources could be clustered into 3 groups according to their euclidean distance of 2.07, which were the same with that of their sensory evaluation. |
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