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Open access

Beata Smolik, Agata Miśkowiec, Ewa Rekowska, Helena Zakrzewska and Martyna Śnioszek

Abstract

The aim of this study was to determine the effect of biostimulators: Kelpak, Asahi SL and Goëmar Goteo on some biochemical parameters-proline and MDA concentration in leaves and florets of Monaco F1cultivars of broccoli grown under field conditions. Biostimulators applied in the experiment caused changes of some biochemical parameters in the plants. Kelpak and Goëmar Goteo significantly increased the oxidative stress parameters like the concentration of proline and malondialdehyde in leaves and florets of broccoli cultivar Monaco F1. Although, Asahi SL affected the content of chosen biochemical parameters although not seriously.

Open access

Maja Sędzik, Beata Smolik and Marcelina Krupa-Małkiewicz

Abstract

Among the heavy metals, lead (Pb) is one of the most common environmental pollutants. This study examines the effect of 1 mM lead nitrate Pb(NO3)2 on the germination index, morphological parameters (root length, shoot length, fresh biomass and tolerance index) and physiological parameters (proline, total chlorophyll and carotenoids) in the leaves of 10-day-old seedlings of various species of crop plants under laboratory conditions. All results, when compared to control, showed Pb adversely affecting the morphological and physiological parameters of the test plants. Among the 12 studied plants, three species (pumpkin, rye and wheat) presented high tolerance to Pb compared to the other test plants. The most sensitive to Pb exposure were radish, barley, tomato and alfalfa

Open access

Beata Smolik, Joanna Cichocka, Anna Materny, Martyna Śnioszek and Helena Zakrzewska

Abstract

The aim of this study was to assess the changes of biometric and biochemical parameters in the radish sprouts (Raphanus sativus L. subvar. radicula Pers.), depending on the content of ions FeIII+ in the hydroponic culture. Seedlings were grown in Hoagland’s complete hydroponic culture without FeIII+ ions or with the addition of FeIII+ ions in an amount of 30 and 300 mg/l. During the experiment, the plants were illuminated by a sodium vapor lamp Son-T-Agro-400 W Philips (40 μE • m2/s PAR at the medium level). After 7 days, some biometric and biochemical measurements were made: shoot and embryonic root length (cm), catalase (CAT) and peroxidase (POX) activity and antioxidant capacity. It was observed that FeIII+ added to hydroponic culture caused changes in the activity of enzymes and biometric parameters in radish sprouts (Raphanus sativus L. subvar. radicula Pers.).

Open access

Marcelina Krupa-Małkiewicz, Beata Smolik, Dominik Ostojski, Maja Sędzik and Justyna Pelc

Abstract

The aim of this study is to determine the effect of both NaCl and KCl alone and in comparison to AsA on the morphological and some biochemical parameters of Oxheart and Vilma cultivars of tomato under laboratory and field conditions. A combination of salt applied in the laboratory experiment caused a significant effect on seed germination and root and shoot length and a significant reduction of Chl a, Chl b and Car contents in 14-day-old tomato seedlings. However, seedlings of cultivar Vilma were characterised by higher tolerance to applied salt stress.

NaCl caused a significant decrease in Chl a, Chl b and Car, and an increase in Pro and MDA content in the leaves of Vilma cultivar under field conditions. Besides, tomato plants cv. Vilma treated with NaCl alone or NaCl with ascorbic acid developed longer roots, from 48 to 73%, compared to the control.