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Research article - Peer-reviewed, 2017

Late blight and virus host-plant resistances, crossing ability and glycoalkaloids in Nordic potato germplasm

Zoteyeva, Nadezhda; Carlson-Nilsson, Ulrika; Bengtsson, Therese; Olsson, Kerstin; Ortiz, Rodomiro


Old potato cultivars from the Nordic Genetic Resource Center (NordGen) and advanced breeding clones from the Swedish University of Agricultural Sciences (SLU) were evaluated for susceptibility to Potato Virus Y (PVY) and Potato Leafroll Virus (PLRV), foliar and tuber resistance to late blight - caused by Phytophthora infestans - as well as for glycoalkaloid content and crossing ability. Enzyme-Linked Immunosorbant Assay (ELISA) tests were used for PVY and PLRV screening during two years that were characterized by intensive virus incidence and severity in the field, while foliar and tuber resistances to late blight were assessed under artificial inoculation with an aggressive Swedish isolate of P. infestans. Hybrid seeds were obtained by crossing cultivars such as Kiva', Sarpo Mira', Rosamunda' and Superb' with SLU advanced breeding clones and a selected clone of Solanum tuberosum Group Andigena. Some cultivars (Harek', Sarpo Mira') and breeding clones (04-2662, 04-2085) with late blight resistance did not show virus infection. The -solanin and -chaconin contents of some of the old Nordic potato cultivars and breeding clones were similar to the known Dutch table cultivar Bintje' after 3 years of testing. This research allows identification of promising Nordic potato cultivars and SLU breeding clones for further use in developing germplasm aiming at organic and conventional farming systems.


Breeding; crossing ability; late blight; glycoalkaloid content; PLRV; PVY; potato; resistance

Published in

Acta Agriculturae Scandinavica, Section B - Soil and Plant Science
2017, Volume: 67, number: 7, pages: 628-636