Abstract
Further races of Cladosporium fulvum Cooke were identified on tomatoes in Poland: one race of group B affecting the resistance gene Cf-4 (similar to the hypothetic race 1.4) and 2 races from group C affecting the gene combination Cf-2 Cf-4 (one resembling the Dutch race 2.3.4. and the other to the hypothetic race 1.2.3.4). A list of varieties susceptible and resistant to these races is given.

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