湖南浓香型烟叶化学成分与物理性状相关性分析

Correlation Analysis of Chemical Components and Physical Properties of Heavy Flavor Flue-cured Tobacco in Hu'nan Province

为探索烤烟烟叶质量评价指标间的关系,于2011-2013年间采集湖南257个烟叶样品,通过简单相关和典型相关研究化学成分与物理性状的相关性。结果表明:湖南烤烟化学成分多数指标间呈极显著相关;物理性状除叶长、平衡含水率与含梗率之间无显著相关外,其余指标间均呈显著或极显著相关;化学成分与物理性状之间存在显著相关,主要由总糖与叶长(正相关)、叶宽(正相关)、单叶重(负相关),总氮与单叶重(正相关)、叶面积质量(正相关),烟碱与单叶重(正相关)、叶面积质量(正相关)、叶长(正相关)、叶宽(负相关)的相关性决定。研究结果为丰富烟叶质量评价体系提供了一定的参考。

In order to explore the relationship among quality evaluation indicators of the flue-cured tobacco leaf, 257 tobacco samples in Hu＇nan were collected from 2011-2013, the relevance between chemical components and physical properties was studied through a simple correlation and canonical correlation analysis. The results showed that most indicators of chemical compositions of Hu＇nan flue-cured tobacco revealed extremely significant correlation, while indexes of physical properties showed significant or extremely significant correlation, except for leaf length, equilibrium moisture content and stem ratio. Chemical composition and physical properties were significantly correlated, which was associated with the correlation between total sugar and leaf length （ positive）, leaf width （positive）, single leaf weight （negative）, total nitrogen and single leaf weight （positive）, weight per unit area （positive）, nicotine and single leaf weight （ positive）, weight per unit area （ positive）, leaf length （ positive）, leaf width （negative）. These results would provided some evidence to tobacco quality evaluation system.