津引品种KRK26与美引品种NC297烟叶质量比较

Comparison of Leaf Quality between Two Tobacco Varieties Introduced from Zimbabwe and America

以云南烟区种植的津引品种KRK 26和美引品种NC 297初烤烟叶作为材料,对两个品种烟叶的外观质量、主要化学成分含量和评吸质量进行了比较。结果表明:KRK 26中部叶外观质量与NC 297相当,上部叶比NC 297稍差,烟叶氧化钾含量显著高于NC 297,总植物碱和总氮含量低于NC 297,多酚类化合含量高于NC 297。总体上看,KRK 26外观质量稍差于NC 297,评吸质量与NC 297差异不大;KRK 26烟叶具有氧化钾和多酚化合物含量高、总植物碱和总氮含量低的特点。

KRK26 introduced from Zimbabwe and NC297 introduced from America are two flue-cured tobacco varieties grown in Yunnan province.The differences in appearance quality,chemical compositions and suction quality between the two varieties were studied.The results showed that the appearance quality of KRK26＇s central leaves was as good as that of NC297,but the quality of NC297＇s upper leaves was much better than that of KRK26.The KRK26＇s polyphenols and potassium content were higher while the content of total nitrogen and total alkaloid were lower than that of NC297.In general the appearence quality of KRK26＇s tobacco leaves was worse than that of NC297＇s.The suction quality of the two varieties was the same.KRK26＇s leaves had the characters of higher potassium and phenols contents but lower total alkaloid and nitrogen contents than that of NC297＇s.