30个鲜食枣种质果实品质综合评价  

Comprehensive evaluation of fruit quality of 30 fresh jujube germplasms

作　　者：李慧[1] 魏天军[1] LI Hui;WEI Tianjun(Institute of Horticulture,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan 750002)

机构地区：[1]宁夏农林科学院园艺研究所,银川750002

出　　处：《中国果树》2024年第2期68-74,共7页China Fruits

基　　金：宁夏农林科学院农业高质量发展与生态保护科技创新示范项目(NGSB-2021-1-02);宁夏回族自治区银川市葡萄、枣国家林木种质资源库项目资助。

摘　　要：为筛选果实综合性状良好的鲜食枣品种,以30个不同鲜食枣种质为研究对象,选取8个外观品质指标和6个内在品质指标,采用相关性分析、主成分分析、聚类分析方法综合评价鲜食枣果实品质。结果表明,不同枣种质的果实品质性状差异明显,变异系数为9.10%~29.95%,b^(*)值的变异系数最大,L^(*)值的变异系数最小。主成分分析得到特征值大于1的4个主成分,累计方差贡献率为81.08%,根据主成分分析结果进行计算并排序,综合评价前5位为Z2-5、N-2、Z-6、灵武长枣4号、N-3,果实品质较好。结合相关性和聚类分析,将鲜食枣果实品质指标简化为6个,为b^(*)值、可滴定酸含量、单果重、果形指数、维生素C含量、可溶性固形物含量。研究结果为鲜食枣种质资源的评价和品种选育提供了参考。In order to select fresh jujube varieties with good comprehensive fruit traits.The 30 different fresh jujube germplasms were used as research objects.Eight external quality indicators and six internal quality indicators were measured.The fruit quality were comprehensively evaluated by correlation,principal component analysis,and cluster analysis.The results showed that there were significant differences in fruit quality traits among different jujube germplasm.The coefficient of variation ranges from 9.10%to 29.95%.The coefficient of variation of b^(*)value was the highest,and the coefficient of variation of L^(*)value was the lowest.Four principal components with eigenvalues greater than 1 were obtained through principal component analysis,with a cumulative variance contribution rate of 81.08%.Based on the results of principal component analysis,the top five in the comprehensive evaluation were Z2-5,N-2,Z-6,‘Lingwuchangzao 4’and N-3,with high fruit quality.By combining correlation and cluster analysis,the quality indicators of fresh jujube fruit were simplified into 6,which were b^(*)value,titratable acid content,single fruit quality,fruit shape index,vitamin C content and soluble solid content.The research results provide a reference for the evaluation of fresh jujube resources and variety selection work.

关 键 词：鲜食枣 果实品质 主成分分析 聚类分析 综合评价 

分 类 号：S665.1[农业科学—果树学]