Diploma thesis follows the influence of organic and conventional potato management (Solanum tuberosum L.) on tuber protein content. Potato protein represents from 1/3 to {$^1\!/\!_2$} of total tuber nitrogen compound and belongs among the most valuable plant proteins - its high value is given by high level of essential amino acids. Important group of potato proteins is a patatin (complex of patatin proteins), which is considered as a major storage protein and has many important physiological functions such as antioxidant activity and function of defense system against pathogenic organisms. The aim of the the work was to determined content of crude protein, pure protein and patatin proteins representation in the total protein of potato tubers. The diploma thesis was solved using 5 potatoes varieties, 2 year{\crq}s repetition and variant of organic and conventional potato production system. The obtained data were statistically evaluated. It was found, that content of dry matter in potato tubers was significantly influenced by a year and locality of the field experiment. Crude protein content in potato tubers was significantly influenced by a year, variety and type of potato management system. The potato tubers produced under conventional and organic management contained 9.93 and 9.16 % of crude protein in dry matter, respectively. Pure protein content was significantly influenced by variety. The affect of crop management on the pure protein content was not statistically signifiant. However, slightly higher content of pure protein was evaluated in dry matter of potato tuber produced under convetional than under organic crop management resulting in average value of 4.23 and 3.86 %, respectively. Representation of pure protein in total content of nitrogen matters was significantly influenced by variety and a year of growing. Complex of patatin proteins (40-45 kDa) was detected for all of the evaluated potato varieties and variants of the field experiment. Higher number of patatin isoforms (with rather physiological function) was investigated in potato tubers from organic crop management.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:53293 |
| Date | January 2010 |
| Creators | MÍČKA, Tomáš |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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