The effect of trace elements and solar UV-B radiation was studied on Tartary buckwheat sprouts. Sprouts were exposed to solar UV-B radiation (UV1) and to around 90 % reduced solar UV-B radiation (UV0). The amount of UV absorbing compounds was higher in UV1 treated plants in comparison to the plants, grown under UV0 conditions. Amount of UV absorbing compounds was the lowest in sprouts where selenium was added, in either UV-B treatment. Dry mass of cotyledons was the highest in sprouts, grown from seeds soaked in solution of Na selenate + Zn nitrate and exposed to UV1 conditions.
B.04 Guest lecture
COBISS.SI-ID: 6091641Two buckwheat species are used for food: common buckwheat (Fagopyrum esculentum) and Tartary buckwheat (Fagopyrum tataricum). During the last few years, there has been an increasing interest in Tartary buckwheat, not only in China, Korea and Japan, but also in Europe, mainly as a plant for preventive nutrition, because of its high content of rutin and other phenolic substances. Both buckwheat species are interesting source of essential elements, including trace elements. Tartary buckwheat is specialy rich in the content of flavonoid rutin. It is well known that rutin affects capilary elasticity and permeability, and that prevents high blood pressure. The amino acid composition is similar in the two buckwheat species and is characterized by high lysine content.
F.06 Development of a new product
COBISS.SI-ID: 512309049Tartary buckwheat (Fagopyrum tataricum) has excelent nutritional quality in regards to anti-oxidants. It is resistant to grazing by animals, pests, diseases and UV radiation because of its concentration of rutin, quercetin, and other phenolic substances. It is able to grow in unfavourable climatic and soil conditions. Tartary buckwheat is sensitive to application of mineral fertilizers, especially nitrogen fertilizers. Buckwheat is as a semi-wild plant suitable for growing without pesticides and artificial mineral fertilisation. All these charcteristics make buckwheat suitable for production of organically grown foods.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 6501497Common buckwheat (Fagopyrum esculentum) cvs. Pyra and Siva, were exposed to three treatments: water deficit, selenium (Se) foliar spraying and the combination of both. Water deficit, Se spraying and the combination of both resulted in shorter cvs. Pyra and Siva. Combined effects of Se addition and UV-B radiation were studied on common buckwheat, cv. Darja. The effective quantum yield of PSII was lower due to UV-B radiation in buckwheat plants and was mitigated by the addition of Se. Addition of Se also mitigated the stunting effect of UV-B radiation and the lowering of biomass in cv. Darja.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 6358137Four diploma thesis were finished in the frame of the project. In the work of Tjaša Radešček [COBISS.SI-ID 2380111], the effects of selenate on growth and physiological activity were studied in two genotypes of cabbage: white and red cabbage (Brassica oleracea). Selenium was added to both genotypes in low and high concentrations. At the end of the experiment morfological parameters were estimated. Selenium did not affect electron transport system (ETS) activity. There was no difference between control plants and selenium treated plants on growth and biomass in both genotypes of cabbage. In diploma thesis from Nina Gerjevič [COBISS.SI-ID 2698831] we tried to found out if selenium content in macrophytes depends on their growth forms and on the location of sampling, if different species take up different amounts of selenium and if the selenium concentrations in selected watercourses are higher than in drinking water. Measured concentrations of selenium in water of selected watercourses were not higher than that allowed for drinking water (10 µg/L). We found out that different growth forms of aquatic plants contained different amounts of selenium, that different macrophyte taxa accumulated different amounts of selenium at the same sampling sites and that the same macrophyte taxa accumulated different amounts of selenium in different watercourses. The aim of diploma thesis of Merilin Šut [COBISS.SI-ID 9464393] was to study the effect of different concentrations of selanate on selected biochemical and physiological characteristics in common duckweed. Addition of 5 mg/L and 10 mg/L of selenate presented stress for the plant. In diploma thesis from Martin Vrhovšek [COBISS.SI-ID 2750031], the effect of selenium on three aquatic plants Potamogeton perfoliatus, Myriophyllum spicatum and Ceratophyllum demersum was studied. Plants were exposed to low (20 µg Se L-1) and high (10 mg Se L-1) concentration of selenium as sodium selenite (Na2SeO3). Higher concentration of selenium had negative effect on plants.
D.10 Educational activities
COBISS.SI-ID: 2380111