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当前位置: 首页 > 文章 > 龙眼果实品质评价理化指标体系的构建 植物遗传资源学报 2015,16 (3) 503-511+519
Position: Home > Articles > Evaluation System Established for the Quality of Ripened Longan Fruit Based on Physicochemical Indices Journal of Plant Genetic Resources 2015,16 (3) 503-511+519

龙眼果实品质评价理化指标体系的构建

作  者：
韩冬梅;吴振先;杨武;帅良;李建光;潘学文;郭栋梁
单  位：
广东省农业科学院果树研究所;华南农业大学园艺学院
关键词：
龙眼果实;多元统计分析;品质评价;品质分类
摘  要：
为了解龙眼果实成熟品质的构成因素及其相互关系,构建科学的品质评价体系,本研究以30个龙眼品种为试材,观察、测定了43个品质相关的理化指标,综合运用多种统计方法,对果实不同类型品质进行评价,构建预测模型,提出综合品质类型可用的判别公式。结果表明,(1)筛选出构成龙眼果实表观性状、经济性状、内在品质和综合品质的公因子成分及其解释指标。(2)建立了4种类型品质的评价模型及其评价指标库,据此计算出的品质预测值与其因子分析综合评分均极显著相关,具有较好的预测效果。(3)依据综合品质评分将30个品种分成3类:低糖大果型、高糖中果型、高糖小果型,依据自然属性和应用价值2类评价指标,对分类结果分别进行了自身验证和交叉验证判别分析,结果表明都具有较高的判别准确率,价值评估方法基本能够满足自然分类和应用分类的共同需要。总之,龙眼果实综合品质评价指标包括果肉葡萄糖含量、可溶性固形物(TSS)含量、果肉流汁、肉厚率、果肉质地、可食率和单果重,达到7个指标全优可以作为龙眼新品种选育的一个重要目标。
译  名：
Evaluation System Established for the Quality of Ripened Longan Fruit Based on Physicochemical Indices
作  者：
HAN Dong-mei;WU Zhen-xian;YANG Wu;SHUAI Liang;LI Jian-guang;PAN Xue-wen;GUO Dong-liang;Institute of Fruit Tree Research,Guangdong Academy of Agriculture Science;Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization,Ministry of Agriculture;College of Horticulture,South China Agricultural University;Guangdong Key Lab of Postharvest Science for Fruit and Vegetable;
关键词：
longan fruit;;multivariate statistical analysis;;quality evaluation;;quality classification
摘  要：
This research was conducted to establish an evaluation system for the quality of ripened longan fruit based on the quality components and their relationships. 30 varieties of longan and 43 physicochemical indices for internal and external quality were chosen to be determined,and by applying multivariate statistical analysis,the evaluating results and predictive formulas for different types of fruit quality,as well as the discriminant formulas for the fruit comprehensive quality,were all studied. The results showed that the common factors were simplified as expected with their interpretive indices screened for 4 types of quality including the apparent traits,economic traits,aril quality and comprehensive quality. The 4 models used for the 4 types of quality and their corresponding index database were all established,from which the predicted scores were all significantly relative with their comprehensive ones from the factor analysis respectively. Lastly,according to the scores for the comprehensive quality,the 30 varieties of longan were classified into 3 types,including,low-sugar and large-size,high-sugar and medium-size,and high-sugar and small-size. Taking the two types of evaluation indices for the natural attribute and application valuerespectively as the variables,3 types of varieties were all self-validated and cross-validated by discriminant analysis with high accuracy,which showed that the value assessment system for the practical application of longan fruit could basically meet both the needs of natural and applicative classifications. In conclusion,the evaluating indices for the comprehensive quality of longan fruit were comprosed of glucose content,watery surface of aril,edible rate,average fruit mass,content of total soluble solids( TSS),aril thickness rate and aril texture. These 7 indices could be one of the object for longan cultivar selection.

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