Agronomy Science, przyrodniczy lublin, czasopisma up, czasopisma uniwersytet przyrodniczy lublin
The aim of the study was to determine the effect of fluoride (F) and selenium (Se) on selected biochemical parameters of two sweet corn cultivars: ‘Złota Karłowa’ and ‘Waza’. A pot experiment was carried out in laboratory conditions on loamy sand with a Corg content of 8.7 g·kg-1. Soil samples were included in various combinations of fluoride (as NaF so that the amount of F was 10 mmol·kg-1) or/and selenium in two oxidation states +IV and +VI (as H2SeO3 and H2SeO4, respectively, so that the amount of Se was 0.05 mmol·kg-1). 15 corn seeds of the same cultivar were seeded for each combination. The plants growing in soil without addition of F and Se were the reference. On days 14, 21 and 28 the contents of assimilation pigments (chlorophyll a, chlorophyll b, carotenoids), total polyphenols and proline were measured. The application of fluoride and selenium, both separately and together, caused significant changes in biochemical parameters. It also coincided with the morphological characteristics of the seedlings of both varieties of sweet corn. In all combinations with Se(VI), the seedlings were dried just after germination. It is difficult to unambiguously assess the influence of Se(IV) and F on the measured parameters. The observed changes were dependent on the date of measurement as well as the varieties of corn. However, it can be stated that the presence of Se(IV) and F soil significantly affected the content of assimilation pigments rather than the concentration of total polyphenols and proline. There was also a statistically significant positive correlation between the assimilation pigment content, and also between the total polyphenol content and proline content.
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