烤烟烘烤特性评价及其指标筛选.

【Objective】To conduct a comprehensive evaluation of the flue curing characteristics of flue-cured tobacco, classify the flue curing characteristics and screen the accessing traits of flue curing characteristics. 【Method】 This study adopts six varieties of flue-cured tobacco which includes K326, Yueyan 97, Yanyan 97, Huayan 12, Huayan 06 and Shaoyan 1 as the experimental materials. It, under the southern three-stage flue curing process, uses Correlation Analysis, Principal Component analysis and Stepwise Regression Analysis to investigate the agronomic traits, physiological and biochemical indexes and yield and quality indexes related to the flue curing characteristics. 【Result】There is a highly significant positive correlation between the curing coefficients and the ratio of free water to bound water, the average rate of chlorophyll degradation, the rate of chlorophyll degradation in the first 48 hours and the rate of carotenoids degradation in the first 48 hours.A significant positive correlation exists between the flue curing index and fresh water content and fresh dry ratio of fresh tobacco leaves. 【Conclusion】The average rate of chlorophyll degradation and the rate of carotenoids degradation in the first 48 hours are effective indexes to evaluate the curing characteristics of tobacco leaves, besides, the ratio of free water to bound water could be used as a reference index to evaluate the flue curing characteristics of tobacco leaves. [ABSTRACT FROM AUTHOR]