Evaluation results of potato hybrids in breeding nurseries in the conditions of the Arkhangelsk region

The article considers the study results of potato hybrids in different breeding nurseries. The research concerns six populations of single-tuber plants and their selection in nurseries of first- and second-living-year hybrids, nurseries of preliminary and main first-year trials. Observations, calculations, and culling are done according to the methodological recommendations on the technology of the potato breeding process. In the breeding nursery of the main first-year trial, the “early” group is marked through the hybrid 2616/6 with a total yield of 45.7 t/ha and commercial yield of 44.2 t/ha, exceeding the Kholmogorsky standard cultivar by 3.5 t/ha (total yield) and 2.2 t/ha (commercial yield). The “medium-early” group is famous through the hybrid 2616/3 with a total yield of 43.9 t/ha and commercial yield of 41.8 t/ha that is by 3.4 and 2.5 times higher than the corresponding values of the Elizaveta standard cultivar. For all the years of research, we did not observe any signs of viral diseases, rhizoctoniosis and macrosporiosis, in potato plantings. By the visual assessment of hybrids by resistance to phytophthora, first observation period plants showed high resistance and decreased in it towards haulm removal, which was favored by weather conditions at the end of the growing season. The highly productive selection numbers above are involved into the further selection process and will be used for the creation of new potato cultivars with early and medium-early ripening terms, high productivity, and resistance to the main diseases for cultivation in the conditions in the North of Russia.