西昌引种栽培油橄榄果中5种金属元素主成分及聚类分析  

Principal Component and Cluster Analysis of 5 Metal Elements in Fruits of Olive Cultivars Introduced to Xichang

作　　者：朱庆平[1] 周力[1] 李开[1] 陈华萍[1] 杨泽身 黄乾明[1] 

机构地区：[1]四川农业大学理学院,雅安625014 [2]凉山州中泽新技术开发有限责任公司,西昌615000

出　　处：《基因组学与应用生物学》2017年第1期362-369,共8页Genomics and Applied Biology

基　　金：四川省科技厅科技支撑计划项目(12ZC2220)资助

摘　　要：采用原子吸收分光光度法,对西昌的从6个不同国家引种栽培的15个油橄榄品种成熟果实(果肉和种子)中的Zn、Ca、Mn、Mg和Fe 5种重要金属元素进行了含量测定,并对测定结果进行了主成分分析和聚类分析,以确定引种油橄榄果实的特征金属元素并对该15个品种进行分类。结果表明:果肉及种子中5种金属元素的含量高低顺序均为Ca>Mg>Fe>Zn>Mn,种子中Ca、Zn、Mn的含量均高于果肉,而果肉中Mg、Fe含量均高于种子;果肉中的Mn、Mg、Fe和种子中的Ca是西昌引种栽培油橄榄果实的特征金属元素;15个品种可聚为5类。这在一定程度上反映出油橄榄果实中的这5种金属元素的含量在不同品种之间存在着遗传差异,这种差异可作为油橄榄品种鉴定和分类的重要参考依据。This study analysed the content of 5 metal elements, including zinc, calcium, manganese, magnesium and iron in ripe fruits （sarcocarp and seeds） of 15 olive cultivars introduced to Xichang by using atomic absorption spectrophotometry. In order to determine the characteristic metal elements of olive fruits and classify the 15 varieties, the distribution of these metal elements were analysed by principal components analysis and cluster analysis. The determination results showed that the average content of the 5 metal elements in olive sarcocarp and seeds in order both were Ca〉Mg〉Fe〉Zn〉Mn, and the content of Ca, Zn, Mn in seeds were basically higher than those in sarcocarp, while the content of Mg, Fe in sarcocarp were basically higher than those in seeds. Principal components analysis suggested that Mn, Mg and Fe in sarcocarp, and Ca in seeds were the characteristic metal elements of olive fruits. Cluster analysis showed that 15 olive varieties could be classified into five groups, which could reflect there existed the hereditary difference of metal elements in olive cultivars to a certain extent and this difference might be used as important reference for authentication and classification of olives.

关 键 词：西昌 油橄榄 金属元素 主成分分析 聚类分析 

分 类 号：S565.7[农业科学—作物学]