RESISTANCE OF AEGILOPS, MAIZE AND WHEAT GENOTYPES TO PSEUDOMONAS-SYRINGAE PATHOVARS ATROFACIENS AND SYRINGAE

The resistance of cereal genotypes to the artificial inoculation of Ps eudomonas syringae pathovars atrofaciens (PSA) and syringae (PSS) at t hird leaf growth stage of development was investigated. The methods of pricking and injecting were used. The injection method produced sympt oms similar to natural infection, at level of inoculum at least 10(7) cfu/ml. At this stage of cereal growth there was a high level of resis tance 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 susceptib le to PSS A106 at 10(9) cfu/ml.