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【目的】探寻薰衣草中特征无机元素的分布规律及其与品种之间的关系。【方法】采用微波消解、电感耦合等离子体发射光谱法(ICP-AES)测定并分析了3个品种28个薰衣草样品中13种无机元素。将无机元素含量数据进行标准化处理后,进行主成分分析,聚类分析和因子分析。【结果】主成分分析表明累积方差的80.3%来自前5个主成分。通过主成分载荷分析,品种C-197(2)可通过元素B、Mg来识别,法国蓝和H-701判别元素分别为Mn、Fe、Al和K。聚类分析可以实现对薰衣草品种的初步判别。根据因子分析,薰衣草花中的特征元素为Mn、Fe、Al、B、Mg。【结论】通过无机元素的主成分和聚类分析,可很好判别3个品种,并在一定程度表征出薰衣草品种多样性的分化,能够使用特征无机元素做为薰衣草品种的判别测量指标之一。
【Objective】 The aim of this study was to investigate the distribution of characteristic inorganic elements in lavender and its relationship with cultivars. 【Method】 Thirteen inorganic elements in 28 lavender samples of three cultivars were determined and analyzed by microwave digestion and inductively coupled plasma atomic emission spectrometry (ICP-AES). After the inorganic element content data were normalized, principal component analysis, cluster analysis and factor analysis were performed. 【Result】 The principal component analysis showed that 80.3% of the cumulative variance came from the first five principal components. According to the principal component analysis, C-197 (2) can be identified by element B and Mg. The discriminant elements of French blue and H-701 are Mn, Fe, Al and K, respectively. Cluster analysis can achieve the initial identification of lavender varieties. According to the factor analysis, the characteristic elements of lavender flower are Mn, Fe, Al, B and Mg. 【Conclusion】 Through the analysis of principal components and cluster analysis of inorganic elements, three varieties can be discriminated well, and the diversity of lavender varieties can be characterized to a certain extent. The characteristic inorganic elements can be used as one of the discriminant indexes of lavender varieties .