Abstract
Development of tomato varieties and hybrids with resistance to the pathogen Fusarium oxysporum f sp. Lycopersici is a priority in breeding of vegetable crops. Evaluation and selection of the initial material is important in effective breeding for resistance to a pathogen. To do this, along with classical methods in tomato breeding, the method of molecular marking is widely used. The purpose of this study was to screen the existing collection of tomatoes with molecular markers I-2/5, I2OH and At-2, which allow identification of resistance genes to the first and second races of the fusarium pathogen. As a result of the work, genotypes were identified that can be used as donors of resistance genes for further breeding work.
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