APPLICATION OF MOLECULAR MARKERS IN BREEDING FOR RESISTANCE TO POTATO CYST NEMATODE

The article presents the results of the application of molecular markers of the genes controlling resistance to potato cyst nematode in different stages of potato breeding - for screening genetic collections and promising hybrids of the All-Russian Institute of Potato Research and the Vavilov Institute of Plant Genetic Resources. It has been established that "pseudopositive" and "pseudonegative" results of a marker-mediated breeding process are associated not only with the specificity of the used markers, but with a lack of objectivity in phenotypic evaluation for resistance to the nematode.