Abstract
Summary — The resistance of cereal genotypes to the artificial inoculation of Pseudomonas syringae pathovars atrofaciens (PSA) and syringae (PSS) at third leaf growth stage of development was investigated. The methods of pricking and injecting were used. The injection method produced symptoms similar to natural infection, at level of inoculum at least 10 cfu/ml. At this stage of cereal growth there was a high level of resistance to PSA and PSS. None of the Aegilops species showed the symptoms of susceptible genotypes. Only one Triticum genotype was susceptible to strains V28 and Y4895 of PSA and PSS, respectively, at the highest level of inoculum. The leaves of all Zea mays genotypes were susceptible to PSS A106 at 10 cfu/ml.
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