The effects of selenium 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. During the growth we examined the following parameters: amount of photosynthetic pigments, electron transport system (ETS) activity, photosynthesis, transpiration and photochemical efficiency of photosystem II (PS II). At the end of the experiment morfological parameters were estimated. Selenium did not affect the amount of chlorophyll a and b and antocianins in the majority of cases. Selenium did not affect ETS activity and photosynthesis. Photosynthesis was much lower at the second measurement in comparison to the first measurement on white cabbage plants regardless the treatment. Potential and effective photochemical efficiency of photosystem II was not affected by the addition of selenium. Transpiration was lower at the second measurement on both genotypes of cabbage. There was no difference between control plants and selenium treated plants on growth and biomass in both genotypes of cabbage.
D.10 Educational activities
COBISS.SI-ID: 2380111The study evaluates the interaction of elevated UV-B radiation with drought and selenium treatments in Fagopyrum esculentum and Fagopyrum tataricum. Plants were exposed to UV-B (UV-B) radiation, drought (D) and selenium (Se) at different levels and in different combinations. The following parameters were monitored: chlorophyll a+b content, potential and effective photochemical efficiency (PE), transpiration rate, terminal electron transport (ETS) activity, plant architecture and biomass production. An UV-B(+) mitigated negative effects of D on PE and biomass of tartary buckwheat. UV-B(+) affected biomass of common buckwheat less during D in comparison to UV-B(+) treatment only. Se treatment ameliorated negative effects of UV-B (+) which was not the case for D. Se addition improved Chl a+b, PE and biomass production of radiated common buckwheat. Se improved PE and biomass production of radiated tartary buckwheat. Common buckwheat showed higher susceptibility to UV-B(+) and D in comparison to tartary buckwheat.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 28217561