Winter wheat genotypes were tested in greenhouse in spring according to Puccinia triticina resistance characters of seedling with and without second leafs. In the field conditions, leaf senescence as Puccinia triticina and facultative parasites development were estimated. The one of the aims of this paper was to establish, which combinations or single expression of the resis­tance characters to Puccinia triticina at seedling stage separated the resistant reaction from pseudo resistance. Latency period was the character of the resistance which divided to parasite specific from wide stress reaction expressed throw quick senescence of down leafs and abundant growth of the first upper one. The reaction of seedlings to obligate parasite on pseudo resistant could be expressed throw lower reaction type. Value of mentioned character was higher on the va­riety Slavia when second leafs were removed after incubation. Senescence of below leafs was in di­rection of facultative and saprophyte fungi development (toxin producers or transporters) in semi arid region with longer continual periods of moisture in spring like during 2005. The first appear­ance of scab in field was on genotypes with relative severe simultaneous attack of Pyrenophora tritici repentis and Septoria tritici. They were pseudo resistant to Puccinia triticina.