皖南“焦甜香”烤烟品种筛选

[目的]筛选适宜皖南生产的优质＂焦甜香＂风格烤烟品种。[方法]采用小区试验方法比较研究在宣城种植的5个烤烟品种的生理变化、化学成分、农艺性状、经济性状等,筛选适宜皖南生产的优质＂焦甜香＂风格烤烟品种。[结果]各品种中,K326的丙二醛（MDA）含量比其他4个品种要高,而云烟97的MDA含量则相对较低;NC297上部叶类胡萝卜素含量在前期保持较高的水平,后期降解较快,说明NC297烟苗更有利于各种致香成分的积累;K326中上部叶的转化酶始终保持较高的活性,有利于干物质的积累;云烟97具有更好的生态适应性;云烟97和6517的产量和产值最高。[结论]在皖南地区,云烟97和6517的化学成分协调、经济性状比较优良,抗逆性较强,为该区较为适宜的＂焦甜香＂风格烤烟品种。

Selection of the Flue-cured Tobacco Variety with the Character of Tar,Sweet and Smell in South Anhui

[Objective] The good-quality flue-cured tobacco variety with the character of tar,sweet and smell,which was suitable for planting in south Anhui,was screened.[Method] The variety was selected based on the comparison of the physiological change,chemical composition,agronomic and economic traits,etc of five flue-cured tobacco varieties in small-area trial in Xuancheng city.[Result] The content of malondialdehyde(MDA) in the K326 variety was higher than that in other fours while the content of MDA in Yunyan 97 variety was relatively low.The content of the carotenoid in upper leaf of NC297 variety had been ranking in a high level in its early growth period and was rapidly degraded in its late growth period,which indicated that its seedling was more conducive to the accumulation of various aroma components.The activity of converting enzyme in middle and upper leaves K326 variety always maintain a high-level which was conducive to the accumulation of dry matter.The Yunyan 97 was with a better ecological adaptability.The Yunyan 97 and 6517 varieties had the highest yield and the best production value.[Conclusion] In south Anhui region,the Yunyan 97 and 6517 varieties was with the coordination of chemical composition,relatively good economic trait and strong resistance,which was more appropriate for the need of the character of tar,sweet and smell,.