Tartary and hybrid buckwheat were foliarly treated with an aqueous solution of sodium selenate (20 mg Se L–1). In treated plants, the selenium content was significantly higher than in controls, irrespective of the plant part and taxon of buckwheat. The highest average Se concentrations in hybrid and tartary buckwheat were found in seeds. The main Se species found in seeds was Se-methionine. Selenium-sprayed plants had higher photochemical efficiency of photosystem II in both taxa and higher electron transport system activity in hybrid buckwheat, suggesting a positive effect of Se on physiological characteristics. Because of the concentration of Se in both buckwheat taxa and selenomethionine as the dominant species of Se, Se-enriched buckwheat is a potential source of dietary Se for animals and humans.
COBISS.SI-ID: 3750735
Tartary buckwheat and common buckwheat grown in the field in natural conditions were foliarly treated with 126 µM solutions of selenate and/or sulfate to study the possible synergistic effect of S on Se accumulation. In both species, the concentration of Se in all plant parts was similar in control and S treated plants. In Tartary buckwheat the concentration of Se was higher in S+Se treated plants compared to plants treated with Se alone. It was shown that S upregulates Se uptake in Tartary buckwheat. The results also showed that it is possible to produce grain and herb of Tartary and common buckwheat with appropriate amounts of Se for health benefit for humans without affecting morphological characteristics or the yield of treated buckwheat plants.
COBISS.SI-ID: 3937359