参试260份烟草品种对青枯病抗性先做自然病圃初筛鉴定,从中选取表现R—LR和部份优质感病品种共113份分菌系接种测定。结果表明,对青枯病Ⅰ、Ⅱ、Ⅲ型菌系反应R—LR的抗病品种有G3、反帝3号和G6等3份,这是迄今所发现抗病谱广且能抗强菌系的种质资源;抗Ⅰ、Ⅱ型菌反应R-MR,感Ⅲ型菌的品种有SPG117、OX2028和岩烟97等12份;抗Ⅰ型菌反应R-MR,感Ⅱ、Ⅲ型菌的品种有K326、K346、G80、RG11和Coker176等50份;对Ⅰ型菌反应为MS-HS的感病品种有中烟15、云烟87、春雷3号、大叶密目、大黄金和革新3号等195份,包括目前生产上的主栽品种NC89、云烟85、翠碧一号和红花大金元等。 A total of 260 tobacco cultivars were screened for resistance to bacterial wilt and then screened for 113 isolates from R-LR and some high-quality susceptible cultivars. The results showed that there were 3 resistant varieties of R-LR to the strains Ⅰ, Ⅱ and Ⅲ of bacterial wilt, including G3, Anti-emperor’s 3 and G6, The results showed that there were 12 strains of SPG117, OX2028 and 97 of Yanyan 97 which were resistant to type I and type II bacteria, R-MR of type I and type II, R- Of the varieties are K326, K346, G80, RG11 and Coker176 and other 50 copies of the type of bacteria for the MS-HS susceptible varieties of tobacco 15, Yunyan 87, Chunlei 3, big leaves dense, large gold and innovation 3, 195, including the current production of the main varieties of NC89, Yunyan 85, Cui Bi and safflower Daikin yuan.