三个烤烟品种生理指标与黑胫病抗性差异研究

为进一步研究烟草黑胫病对烟叶品质的影响，在相同的田间条件下，以烤烟‘红花大金元’（以下简称‘红大’）、‘K326’和‘云烟85’品种为材料，比较了不同烤烟品种的生理指标、黑胫病发病率和相关化学成分之间的关系。结果表明，‘红大’品种的黑胫病发病率、病情指数最高，‘K326’次之，‘云烟85’最低；‘云烟85’的POD、PPO、CAT抗性酶活性和总酚、类黄酮含量接种时最高，且增加量最大，‘K326’次之，‘红大’最小；PPO、CAT、POD活性和类黄酮、总酚含量呈负相关关系，与蛋白质、可溶性糖含量呈正相关关系。

Physiological Index of Three Flue-cured Tobacco Varieties and Their Black Shank Resistance Difference

In order to further study the effect of tobacco black shank disease on tobacco quality, compared the different physiological indexes of flue-cured tobacco varieties, black shank disease incidence and the relationship between the relevant chemical composition, with flue-cured tobacco ‘Hongda’, ‘K326’and ‘Yunyan85’ varieties as material under the same condition. Result: the black shank disease incidence and disease index of ‘Hongda’ is the highest, ‘K326’ take the second place, and ‘Yunyan85’ is the lowest. The activity of POD, PPO, CAT, total phenol and flavonoids of ‘Yunyan85’ is highest and the increase is the largest in vaccination, ‘K326’ second, ‘Hongda’ minimum. The activity of PPO, CAT, POD are negative corrected with flavonoids and total phenol, and positive correlated with protein and soluble sugar.