关键词: 品种, 烤烟, 化学成分, 香气物质

Abstract: [Objective] In order to explicit characteristics of chemical components and aroma components among different tobacco varieties in Liangshan area,the present study was conducted.[Method] The chemical components and aroma components of six varieties of flue-cured tobacco were analyzed.[Results] The results showed that nicotine contents of leaves of all varieties were lower than 2.50%,total sugar contents were all exceed 30% universally,the ratios between total sugar contents and nicotine contents were all exceed 17.The chlorine contents were not stable,so was ration of between potassium contents and chlorine contents,and their variation coefficients were all exceed 27.The contents variation coefficients of plastid pigments degradation,neophytadiene and cembranoids degradation were all lower than 30,which of rest aroma components contents was all exceed 30.The total contents of aroma components of Yunyan 87,Yunyan 85 and Ql-3 were higher,while the KRK26 was lowest.[Conclusion] The results showed that nicotine contents of leaves of all varieties were low,total sugar contents were highly universal,the ratio between total sugar contents and nicotine contents was high.The chlorine contents were not stable,and variation coefficients were big,so was ration of between potassium contents and chlorine contents.The contents of plastid pigments degradation,neophytadiene and cembranoids degradation were stable,the rest aroma components contents were unstable relatively.The total aroma components contents displayed negative correlation with nicotine,total sugar and chlorine,and showed positive correlation with reducing sugar,total nitrogen and potassium,but both do not reach significant levels.

Key words: varieties, flue-cured tobacco, chemical components, aroma components