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1992, 1994年两年度在田间自然发病条件卜对400多份烟草品种(品系)材料进行了烟草赤星病(Alternaria alternata)抗病性鉴定. 1992年度200份品种资源材料,病指在20以下较抗的为54个,占27%,1994年度154份品种资源材料及75份育种材料共计229个,其中较抗病的病指在20以下的5个,占6.9%。两年度发现了一批抗性较好的材料,井于1995年进行了重复鉴定,结果波动性不大。另外,1991年还进行了10个当前生产上审定推广品种抗赤星病鉴定。除中烟90表现一定抗性外,其它生产上种植的品种无一抗性较好的材料
In 1992 and 1994, more than 400 tobacco varieties (lines) were identified for their resistance to Alternaria alternata under the natural conditions of the field. In 1992, 200 varieties of materials were used, 54 were resistant to them, accounting for 27%. In 1994, 154 varieties of resources and 75 breeding materials totaled 229, of which more than 20 were resistant to disease, accounting for 6.9%. In the past two years, a batch of materials with better resistance was found, and repeated identification was conducted in 1995 with little fluctuation. In addition, in 1991 also carried out 10 currently on the production of approved varieties of promotion of resistance to brown spot disease identification. In addition to tobacco 90 showed a certain resistance, the other varieties grown in the production of a better resistance to the material