新疆杏品种果实鲜食品质主要评价指标的选择

Selection of Indexes for Evaluating Fruit Table Quality on Apricot Varieties in Xinjiang

为确定新疆杏鲜食品质评价指标,分析、测定了新疆南疆地区58个杏品种的单果重、果形指数、硬度、可溶性固形物、可滴定酸、风味等10项果实品质指标,并采用主成份分析和聚类分析法对各品质指标进行分析。结果表明,在杏多个品质指标之间存在着相对独立性和密切相关性。经主成份分析,前6个主成分的累计贡献率已达到85.213%,可反映鲜食杏果实品质的绝大部分信息;通过因子聚类分析,10个主要品质指标聚成了6类,最终将品质指标简化为单果重、果形指数、可滴定酸、Vc含量、风味、色泽6个具代表性的指标。

To study the quality evaluation indexes of table apricot in Xinjiang. The main evaluation indexes of 58 varieties of Apricot in the South of Xinjiang, including fruit weight, fruit shape index, flesh firmness, total soluble solids （TSS）, titratable acid （TA）, flavor, etc, were measured. The data were analyzed by principal component analysis and systematic cluster analysis. The results showed that there was either relative independence or close correspondence among the evaluation indexes of apricot fruit quality. Principal components analysis showed that the first six principal components variance accumulation contribution rate amounted to 85.213%, which reflected most of the quality of apricot. According to their cluster analysis, the tested 10 indexes were divided into 6 types, finally 6 indexes predigested for evaluating apricot table quality were obtained, which were fruit weight, fruit shape, TA, Vc, flavor and colour.