Russian cultivars for processing into potato chips

The State Register of Breeding Achievements of Russia has added dozens of new potato cultivars over the period of 2015-2025. However, there is little information in the literature about their comparable quantitative and qualitative suitability for processing into chips. Especially when grown in the similar conditions. The aim of the study was to identify new domestic potato cultivars that are distinguished by high yield, marketability, yield of healthy tubers and suitability for processing into chips; identify factors influencing the quantitative and qualitative indicators of raw materials. The research was carried out in the Moscow Region in 2022–2024. Potatoes were grown on sod-podzolic sandy loam soil that was moderately rich in nutrients. In a two-factor experiment, the commercial yield of potatoes was studied taking into account the output of healthy tubers and the quality of chips. Factors: A – potato cultivar (58 pcs.); B – amount of precipitation in the 2nd half of the growing season (3 gradations – 57.5 mm in 2022, 83.4 mm in 2024, 135.2 mm in 2023). Potatoes were planted in the first decade of May, harvested in the first decade of September, planting density was 45 thousand tubers/ha, row spacing – 75 cm. Frying of potato slices 1.2 mm thick was carried out at a temperature of 170–180 ºС. It was found that the quantitative yield of raw material suitable for processing into chips was determined mainly by the amount of precipitation in the 2nd half of the growing season (the influence of the factor according to the results of the dispersion analysis was 56.3 %), and the quality of raw material was determined by the cultivar (59.1 %). From the 58 studied, 13 potato cultivars were chosen and recommended for production, because they combined high yields (28.8–37.7 t/ha), marketability (52.0–79.7 %), yield of healthy tubers (95.5–99.6 %), starch content (14.3–19.3 %), index of reducing sugars (2.0–3.2) and thus characterized by high suitability for processing into chips (6.0–8.3 points): ‘Aleksandrit’, ‘Arijel', ‘Shakh’, ‘Orlan’, ‘Rozovyj Charodej’, ‘Nika’, ‘Evpatij’, ‘Cavaler’, ‘Kashtak’, ‘Pechorskij’, ‘Princessa Natavan’, ‘Spyridon’, ‘Chajka’.