Canonical correlation analysis between physical properties and chemical components of flue-cured tobacco

WANG Jian-min; SUN Yi-ran; LI Rui-li; DU Yue-guang; LI Yong-zheng

doi:10.3969/j.issn.2095-476X.2014.05.006

Abstract：To explore the relationship between physical properties and chemical components about flue-cured tobacco,six physical properties and seven normal chemical components of 92 flue-cured tobacco sam-ples were detected and these data were analyzed by simple correlation analysis,canonical correlation analy-sis and path analysis.The results showed as follows:1)value had significant negative correlation with total sugar and reducing sugar filling,and had significant extremely positive correlation with total nitrogen and chlorine;leaf thickness had significant extremely positive correlation with total alkaloid,total nitrogen and chlorine;had significant negative correlation with total sugar and reducing sugar;leaf density had signifi-cant extremely positive correlation with total alkaloid and total nitrogen,had significant extremely negative correlation with total sugar and reducing sugar;chlorine had extremely or significant extremely negative correlation with reducing sugar and smoldering time;tensile strength had extremely or significant negative correlation with total alkaloid ,total nitrogen and chlorine,had significant extremely positive correlation with total sugar;equilibrium moisture content had significant extremely positive correlation with total sug-ar,had significant extremely positive correlation total alkaloid and reducing sugar.The results of canonical correlation analysis was consistent with the simple correlation analysis,and the canonical correlation coeffi-cients of three pairs of canonical variables were 0.817,0.538,0.524 respectively.2)Total sugar,total alkaloid,reducing sugar,total nitrogen and chloride were closely related potassium and starch less with physical characteristics in routine chemical components.