8个烤烟品种(品系)的生长发育及抗病性比较

Comparison of Growth and Development and Disease Resistance of Eight Flue-cured Tobacco Varieties(Nicotiana tabacum)

[目的]对8个烤烟品种(Nicotiana tabacum)的田间表现进行比较研究。[方法]分析苗期、栽后25、45 d的各品种烟苗生长势,移栽后25和78 d烟株生长情况和病虫害发生情况以及烟叶采收情况。[结果]从苗期至移栽后45 d,中烟104和DL02的长势中等,在所有处理中表现最好;移栽后78 d,所有品种株高均低于80 cm,有效叶数显著少于正常年份同期;除了中烟104和DL02外,其他6个品种无产量株数比例均在60%以上;病害调查结果表明,丛顶病是最重要的病害,其中中烟104对丛顶病的抗性最好,其次是DL02,其他品种抗性差;其他病虫害发病情况,前期中烟104和DL02抗病性较好,后期无明显的规律可循。[结论]综合病虫害发病情况、农艺性状调查指标及无产量株数统计结果,认为中烟104和DL02在8个品种中总体表现较好。

[ Objective] The purpose was to compared and studied the field performance of eight varieties of flue-cured tobacco. [ Method] The paper mainly analyzed the seedling growth conditions of seedling stage and 25,45 days after transplanting, described the situations of pests and diseases of 25 and 78 days after transplanting, and tobacco leaves harvest. [ Result] The results showed that Zhongyan 104 and DL02 grew better than the other varieties from seedling to 45 days after transplanting, plant height of all varieties was less than 80 cm on 78 days af- ter transplanting, the effective number of leaves was significantly less than those of at the same period in normal years. Except Zhongyan 104 and DL02, the ratio of the other varieties non-harvest plants was more than 60% ： The disease investigation results showed that bushy top dis- ease was the main diseases, thereinto, the resistance of Zhongyan 104 was the best, followed by DL02, the other varieties were the most poo- rer. During the earlier stage, the resistance of Zhongyan 104 and DL02 to the other diseases were better, while there were no significant rules during the latter period. [ Conclusion] Zhongyan 104 and DL02 have better performances than the other varieties in a whole.