The article is dealing with evaluation of four fruit maturity stages of 6 selected clones (LKL-3, LKL-14, LKL-19, LKL-33, LKL-96 and LKL-103) of Lonicera kamtschatica (Sevast.) Pojark in relation to total polyphenols, flavonoids content and antioxidant activity of berries. The experiment in 5 replications of each clones has been established in the conditions of Botanical Garden in Nitra (Slovak republic)in 2016. The results of analyses proved that in respect of the total polyphenols content (TPC), the content of flavonoids (FC) and the antioxidant activity the most valuable clones at the stage of full ripened fruit were following: LKL-14 (8.77; 2.57 g/kg FW; 9.07 g/kg), LKL-33 (6.77; 2.84 g/kg FW; 9.16 g/kg) and LKL -3 (8.19; 2.61 g/kg FW; 8.94 g/kg). The results of statistical analyses by one-way analysis of variance proved significant differences among assayed clones in total flavonoids and antioxidant activity of fruit but no differences among content of total polyphenols and assayed stages of fruit maturity.

This study evaluates the effects of different selenium levels (VI) in the form of sodium selenate (25, 50, 150 and 300 mg.dm -3 ) on the selected parametres in seedlings of garden pea (Pisum sativum L.) varieties ('Flavora', 'Oskar', 'Exzellenz' and 'Jumbo') grown in Petri dishes. Tested indicators included seed germination, roots length, content of photosynthetic pigments -chlorophyll a and b, green biomass weight in early growth stages and acute toxicity expressed as IC 50 value. The study has proved a significant positive effect of selenium. During the germination, selenium doses reached 25 mg.dm -3 in 'Exzellenz' (100 %) and 'Flavora' (95 %) varieties; and 50 mg.dm -3 in 'Oskar' (the germination began 54 hours after sowing) and 'Exzellenz' (the germination began 48 hours after sowing) compared with a control sample. Regarding the root growth, 'Oskar' variety may be considered as the most resistant variety considering the value of acute phytotoxicity determined by probit analysis (1274.1 mg.dm ). Selenium showed a statistically significant negative effect on biomass weight and the lowest doses of acute phytotoxicity were recorded (29.9 -42.5 mg.dm -3). The results of acute phytotoxicity confirmed that utilized levels of selenate between 50 and 100 mg.dm -3 of garden pea plants are the safest for foliar application.