VARIATION OF CHEMICAL COMPOSITION OF TUBERS OF POTATO TABLE CULTIVARS GROWN UNDER DEFICIT AND EXCESS OF WATER.

Average chemical composition of mature tubers of 97 Polish potato table cultivars is presented. Each variety was cultivated for at least 3 years at the Experimental Station in Jadwisin, near Warsaw. About 25 cultivars were grown each year between 1974 and 1997 on light loamy sand with the same agricultural practices, without irrigation or chemical control of diseases. Contents of dry matter and starch were the most stable with mean variability coefficients (V) 8.4 and 8.8%, respectively. The least stable components were concentrations of total sugar (V=34.2%) and reducing sugar with V reaching about fifty percent. Wet vegetation conditions worsened tuber chemical composition (less dry matter, starch, protein and ascorbic acid) as compared with dry or intermediate ones.

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eISSN:	2083-6007
ISSN:	1230-0322

W latach 2022-2024 kwartalnik naukowy Polish Journal of Food and Nutrition Sciences realizuje projekt nr RCN/SP/0520/2021/1 finansowany ze środków budżetu państwa – Ministerstwo Edukacji i Nauki w ramach programu „Rozwój czasopism naukowych”. Dofinansowanie wynosi 120 000 zł. W ramach projektu podejmowane są działania zmierzające do podniesienia poziomu praktyk wydawniczych i edytorskich, zwiększenia wpływu czasopism na rozwój nauki oraz utrzymania się czasopism w międzynarodowym obiegu naukowym.

In the years 2022-2024, the scientific quarterly Polish Journal of Food and Nutrition Sciences accomplishes a project no. RCN/SP/0520/2021/1 financed from the state budged – Ministry of Education and Science Republic of Poland in the framework of a program “Development of scientific journals”. The financing amounts to 120,000 PLN. The program aims at improving the level of publishing and editing practices, increasing the impact of scientific journals on science development, and extending the international range of scientific journals.