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The importance of variety in yield of table potatoes (\kur{Solanum tuberosum} L.)
ŠPLÍCHAL, Jonáš
In the theoretical part of the bachelor thesis, attention was paid to the description of the tuber potato, morphological characteristics of the potato, and the division of varieties according to the length of the growing season and according to the cooking type. In the following chapters, the growing principles and conditions of potato pro-duction, the content substances in potato tubers and the possibilities of their influ-ence by cultivation technology and breeding were defined. Equally important is the chapter devoted to the varietal variation of production and content parameters of potato tubers since the practical part of the bachelor thesis was devoted to this to-pic. For this purpose, a small-plot experiment was set up at the Lukavec site (620 m above sea level) with potato varieties Adéla, Antonia, and Rosara, and the yield parameters (total yield, proportion of tubers over 35 mm) and selected content cha-racteristics (starch and dry matter content) were monitored. The Rosara variety had the highest starch and dry matter content.
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Patatin proteins relative abundance in correlation to antioxidative activity of tubers of cultivated and wild potato species
MEJZLÍK, Petr
The aim of the thesis was to determine the content of pure tuber proteins, patatin relative abundance in total tuber protein, and subsequently its antioxidant potential. The theoretical part dealt with general potato characteristics, potato tuber chemical composition and description of analyzed cultivated and wild potato species. In the practical part results of laboratory analysis were presented. It was determined statistically significant genotype variability of antioxidant activity for potato tuber protein as well as for potato tuber dry matter here ranging from 0.221 (Solanum berthaultii 07S0300031) to 0.0066 mg of ascorbic acid/g dry matter (Solanum tuberosum cultivar Kuras). Any direct relationship between potato tuber protein content or patatin relative abundance and antioxidant activity was found. The findings are compared with the literature.
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Evaluation of protein variability among plant organs of Solanum tuberosum L.
ŠMÍDOVÁ, Michaela
The aim of the contritbution was to study potato (Solanum tuberosum L.) tuber protein concentration during growing season in dependence on actual ontogenesis stage of the potato plant. The changes in tuber protein concentration were studied on two potato cultivars - Adora (very early maturing) and Bionta (late maturing). The trial was established under field conditions on the site České Budějovice (380 m). Continuous ore sampling was aimed at following parameters evaluation: average tuber weight, dry matter concentration, crude protein concentration and protein concentration. Early maturing cultivar Adora showed rapid increasing of biomass from the start of ontogenesis and at the same time rapid decreasing of nitrogen compounds and pure protein concentration. The late maturing cultivar Bionta showed much more slow formation of biomass however the decreasing of nitrogen compounds and pure protein concentration was also recorded. Significant effect of ontogenesis stage on crude as well as pure protein concentration was evaluated. Significant effect on crude and pure protein concentration had also cultivar.
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