Zmienność fenotypowa wybranych cech zagranicznych odmian ziemniaka uprawianych w Polsce

Abstract

In field experiments conducted at two localities in Poland, on various height over the sea level, in the years 2006-2008, the influence of potato eultivars was hoted of the various colours of skin and flesh on the crop, morphological traits and chemical composition of tubers. The higher total and commercial crop was obtained in potatoes with yellow rather than colourful flesh. A higher content of dry matter, starch, total and true protein, vitamin C and Lascorbic acid in tubers were noted in eultivars with coloured flesh. The highest concentration of dry matter, total and true protein was characteristic for cultivar Valfi and starch for Shetland Black. The highest content of the vitamin C and ascorbic acid was noted in cultivar Blue Congo with purple skin and flesh. The homologous content of this component is characteristic for the eultivars: Shetland Black, Highland Burgundy Red and Valfi with colourful tuber flesh. Cultivars with purple and red flesh showed a higher mean content of those components than it was noted with yellow tuber eultivars. The investigation did not show the effect of the localization on the content of dry matter, starch, true protein, vitamin C and ascorbic acid in tubers.