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Biochemical tuber composition of promising potato hybrids

Abstract

Kozhushko N.S., Sakhoshko M.M., Onychko V.I., Butenko Ye.Yu., Kandyba N.M., Bashtovyi M.H., Vereshchahin I.V., Klochkova T.I., Zavora Y.A., Smilik D.V.

The consumption of potato as a food product in Ukraine is currently the main type of use. The Potato Research Institute of Sumy National Agrarian University implements a breeding program for the creation of new nematode-resistant intensive varieties with increased energy value. During 2016-2018, the biochemical composition of tubers of 21 hybrids, including 6 early-maturing, 12 middle-early, 3 middle-maturing, was studied using an infrared analyzer. Increased starch content (84%-80% per dry weight) was observed in 10%, high (73%-72%)-in 14% of the hybrids. Protein content in the tubers was at the level of 6.4% per dry weight, early-maturing hybrids turned out to be the most valuable ones (8.9-8.6%). The high content of vitamin C (89-86 mg%) was accumulated by the middle-early and middle-maturing hybrids, vitamin K (0.26-0.19 mg%)-by the early-maturing hybrids. 28% of hybrids with the maximum (2.2 mg%) potassium content were selected. The amount of nitrate in tubers of 48% of the hybrids did not exceed the maximum permissible concentration. The hybrids with increased and high starch content had a high caloric value ranging from 58 to 55 calorie/100 g. The selection of high-calorie hybrids will enable us to increase the competitiveness of future potato varieties of Sumy NAU breeding in the modern food market.

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