烤烟毕纳1号在毕节不同生态区酚类化合物变化的研究

通过大田试验，研究了烤烟品种（NicotianatobacumL．）毕纳1号在毕节地区3个生态区烤烟不同生育期的多酚类化合物的动态变化规律，探索了不同生态条件对烤烟的物质成分积累的影响。结果表明，毕节地区烤烟酚类化合物含量较高，烤烟在整个生育期内，5种酚类化合物均呈现逐步上升的趋势，一般在成熟期前后增幅较大。不同生态区烤烟中，酚类化合物含量高低均为金沙县〉威宁县〉大方县，不同酚类物质含量的大小为绿原酸〉芸香苷〉4-0-咖啡尼奎酸〉新绿原酸〉莨菪亭，其中绿原酸和芸香苷的含量占多酚总量的79％以上，是多酚中重要的组成成分。不同生态区随着海拔高度的升高，气候条件有显著差别，对烤烟中酚类化合物的形成和积累有很大的影响。

Research on Changes of Polyphenols Content in Flue -cured Tobacco Variety Bina No. 1 in Different Ecological Regions of Bijie

Through field experiments, the author studied the dynamic changes of polyphenols content in flue - cured tobacco （Nicotiana tobacum L. ） variety Bina No. 1 at different growth stages in 3 ecological regions of Bijie, and explored the impacts of different ecological conditions on the composition accumulation of flue cured tobacco. The results showed that： in Bijie ecological tobacco area, Bina No. 1 had a high content of phenolic compounds, and five kinds of phenolic compounds contents all showed a gradual upward trend in whole growth period, especially around maturing period. For flue - cured tobacco in different ecological re-gions, the content of phenolic compounds had the following order： Jinsha county 〉 Weining county 〉 Dafang county. The content of different kinds of polyphenols showed the following sequence ： chlorogenic acid 〉 rutin 〉 4 - O - coffee nique acid 〉 new chlo rogenic acid 〉 scopoletin, and chlorogenic acid and rutin contents accounted for more than 79% of the total polyphenols content. In different ecological regions, as the altitude increased, the climatic conditions changed obviously, and they had a great impact on the formation and accumulation of phenolic compounds in flue - cured tobacco.