烤烟主要物理性状与化学成分的典型相关分析

Canonical Correlation Analysis between Main Chemical Components and Physical Properties in Flue-Cured Tobacco Leaves

以烤烟品种K 326为供试材料,采用典型相关分析方法研究了烤烟不同部位烟叶的主要物理性状和化学成分的关系.结果表明,烤烟物理性状和化学成分所具有的显著性指标因部位而异;上、中、下3个部位物理性状共有的显著性指标是叶长、叶厚和叶面密度,化学成分共有的显著性指标是氯含量、钾含量和钾氯比,且后者对典型变量的相对作用大小一致,表现为钾>钾氯比>氯;烤烟不同部位烟叶叶长、叶厚和叶面密度与钾、钾氯比和氯的关系最为密切.典型负载系数可以作为确定各部位物理特性和化学成分显著性指标的重要依据.

K 326, a flue-cured tobacco variety, was selected as materials to study the correlation between the main chemical components and physical properties of different leaf positions by using the method of canonical correlation analysis. The results indicated that the significant indexes of chemical components and physical properties were different with leaf positions. The common significant indexes of different leaf positions including upper leaves, cutters and lower leaves were leaf length, leaf thickness and leaf density for physical properties, and chlorine content, potassium content and the ratio of potassium to chlorine for chemical components. The effects of common significant indexes of chemical components showed the same order of potassium 〉 ratio of potassium to chlorine 〉 chlorine among different leaf positions. The correlations of leaf length, leaf thickness and leaf density with potassium, chlorine and ratio of potassium to chlorine were significant for different leaf positions. The canonical loading coefficients could be as a reference for determining the significant indexes of physical properties and chemical components in flue-cured tobacco leaves.