Jozef Fejér
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View article: Effect of Soil-Applied Humic Amendment on Photosynthesis Rate and Lycopene Content of Tomato <i>Solanum lycopersicum</i> L. Seven Landraces, Involving Newly Characterised ‘Zemplínskyʼ
Effect of Soil-Applied Humic Amendment on Photosynthesis Rate and Lycopene Content of Tomato <i>Solanum lycopersicum</i> L. Seven Landraces, Involving Newly Characterised ‘Zemplínskyʼ Open
This research aimed to examine the effect of soil improvement based on leonardite on the intensity of photosynthesis and the lycopene content of tomatoes. Seven landraces of Hungarian and Slovakian origin were tested at two sites (Site-1, …
View article: Effects of Plant Growth Regulators and Foliar Nutrients on the Alkaloid Content in Poppy Straw of Opium Poppy (Papaver somniferum L.)
Effects of Plant Growth Regulators and Foliar Nutrients on the Alkaloid Content in Poppy Straw of Opium Poppy (Papaver somniferum L.) Open
Poppy (Papaver somniferum L.) is an important industrial plant worldwide. It is legally cultivated in seven countries around the world for the production of poppy straw or raw opium in India for alkaloid extraction. This work focused on te…
View article: Are there the differences in antioxidant potential of local and imported Rubus idaeus and Rubus fruticosus fruits?
Are there the differences in antioxidant potential of local and imported Rubus idaeus and Rubus fruticosus fruits? Open
The study focused on the biological activity of ethanol extracts from the fruits of Rubus idaeus and Rubus fruticosus. The fruits of local origin were compared with those from the organic store -imported. The antioxidant activities were an…
View article: Testing the Antioxidant Activity of Different Leaf Extracts and the Phenolic Content of Young Moringa oleifera Lam. Plants Grown in a Temperate Climate Zone
Testing the Antioxidant Activity of Different Leaf Extracts and the Phenolic Content of Young Moringa oleifera Lam. Plants Grown in a Temperate Climate Zone Open
Moringa (Moringa oleifera Lam.) is a tree that grows in tropical and subtropical regions. In this study, the plants were grown in a temperate climate zone from seeds collected at the Island of St. Lucia. Cultivation was carried out in the …
View article: Salvia pratensis L. extracts as potential eco-friendly herbicides for sustainable agricultural applications
Salvia pratensis L. extracts as potential eco-friendly herbicides for sustainable agricultural applications Open
The aim of this study is based on the searching of "new" potential environmentally friendly plant based products with herbicidal activity. The purpose of the study is also to find the source which is easy to harvest in high amount within t…
View article: Conventional breeding and industrial profile of a special Papaver somniferum L. cultivar for dual use
Conventional breeding and industrial profile of a special Papaver somniferum L. cultivar for dual use Open
This research outlines the development of a specialized cultivar of the opium poppy (Papaver somniferum L.), designed for dual purposes. The primary goal was to breed a variety well-adapted to specific environmental conditions, with a focu…
View article: Testing the Antioxidant Activity of Various Leaf Extracts from Young Moringa oleifera Lam. Plants Grown in a Temperate Climate Zone
Testing the Antioxidant Activity of Various Leaf Extracts from Young Moringa oleifera Lam. Plants Grown in a Temperate Climate Zone Open
Moringa (Moringa oleifera Lam.) is a tree that grows in tropical and subtropical regions. In this study, the plants were grown in a temperate climate zone from seeds collected at the Island of St. Lucia. Cultivation was carried out in the …
View article: Investigating the eco-friendly extracts of Salvia pratensis L. for sustainable agricultural applications
Investigating the eco-friendly extracts of Salvia pratensis L. for sustainable agricultural applications Open
Salvia pratensis L. extracts boast a rich history in the food, cosmetic, and perfume industries. This study focuses on analyzing the chemical composition of S. pratensis, with emphasis on their phenolic, flavonoid, and rosmarinic acid cont…
View article: Does the Invasive Heracleum mantegazzianum Influence Other Species by Allelopathy?
Does the Invasive Heracleum mantegazzianum Influence Other Species by Allelopathy? Open
Heracleum mantegazzianum is an invasive species in middle Europe. The mode of action of its invasiveness is still not known. Our study focuses on observation of potential allelopathic influence by the production and release of phytochemica…
View article: Prevalence of COVID-19 antibodies in employees of St. Jacob Hospital in Bardejov
Prevalence of COVID-19 antibodies in employees of St. Jacob Hospital in Bardejov Open
Multiple prevalence of COVID-19 disease were found in employees of the internal, surgical and rehabilitation departments in whom we detected a higher presence of IgG antibodies. In department of laboratory medicine workers were proven lowe…
View article: Cytogenetic analysis of coke oven workers in Eastern Slovakia
Cytogenetic analysis of coke oven workers in Eastern Slovakia Open
Cytogenetic analysis showed an increased frequency of chromosomal aberrations in coke oven workers in Eastern Slovakia.
View article: Prevention aid in qualitative analysis of dermatoglyphic patterns in relation to type 2 diabetes mellitus: a pilot study
Prevention aid in qualitative analysis of dermatoglyphic patterns in relation to type 2 diabetes mellitus: a pilot study Open
Fingerprint pattern frequencies might be used as another screening tool and indicator in T2DM prevention. Qualitative analysis of fingerprint patterns could be useful regarding the additional prevention diagnostics of T2DM in the populatio…
View article: The Spreading of Antibiotic-Resistant Bacteria in Terrestrial Ecosystems and the Formation of Soil Resistome
The Spreading of Antibiotic-Resistant Bacteria in Terrestrial Ecosystems and the Formation of Soil Resistome Open
Terrestrial ecosystems play a crucial role in the formation of soil resistome and the spread of antibiotic-resistant bacteria. Comprehensive studies of soil microbial communities, their structure, integrity, and level of antibiotic resista…
View article: Seasonal Variability of Juniperus communis L. Berry Ethanol Extracts: 2. In Vitro Ferric Reducing Ability of Plasma (FRAP) Assay
Seasonal Variability of Juniperus communis L. Berry Ethanol Extracts: 2. In Vitro Ferric Reducing Ability of Plasma (FRAP) Assay Open
In the present study, the seasonal variability of the in vitro ferric reducing ability of plasma (FRAP), total phenols, and terpene hydrocarbon content in 70% ethanol extracts were evaluated. The samples of crushed (CBs) and non-crushed ri…
View article: Comparative Analysis Reveals Changes in Some Seed Properties in Amaranth Mutant Variety ‘Zobor’ (A. hypochondriacus × A. hybridus)
Comparative Analysis Reveals Changes in Some Seed Properties in Amaranth Mutant Variety ‘Zobor’ (A. hypochondriacus × A. hybridus) Open
The aim of our long-term research program is to improve the quality and quantity of amaranth production through mutation breeding using γ-radiation. In this paper, we present the characterization of the new variety ‘Zobor’ of A. hypochondr…
View article: New Mutant Amaranth Varieties as a Potential Source of Biologically Active Substances
New Mutant Amaranth Varieties as a Potential Source of Biologically Active Substances Open
Amaranth species represent a diverse group of plants. Many of them are a rich source of secondary metabolites with many positive biological effects. Total phenolic, total flavonoid and rutin content, antioxidant activity against superoxide…
View article: Results of Oilseed Poppy Breeding and Production Potential of New Varieties
Results of Oilseed Poppy Breeding and Production Potential of New Varieties Open
Breeding of poppy (Papaver somniferum L.) for food use of poppy seeds has a long tradition in Slovakia. Conventional breeding methods have brought several successes in the form of registration of new varieties with better yield parameters.…
View article: Seasonal Variability of Juniperus communis L. Berry Ethanol Extracts: 1. In Vitro Hydroxyl Radical Scavenging Activity
Seasonal Variability of Juniperus communis L. Berry Ethanol Extracts: 1. In Vitro Hydroxyl Radical Scavenging Activity Open
In the present study, in vitro hydroxyl radical scavenging activities, total phenols and terpene contents in 70% ethanol extracts were evaluated. Samples of crushed (CB) and non-crushed ripe juniper berries (NCB) collected at five localiti…
View article: First Report on Evaluation of Basic Nutritional and Antioxidant Properties of Moringa Oleifera Lam. from Caribbean Island of Saint Lucia
First Report on Evaluation of Basic Nutritional and Antioxidant Properties of Moringa Oleifera Lam. from Caribbean Island of Saint Lucia Open
Moringa oleifera Lam. has been considered as a multipurpose tree. The studies on it focus on its variable nutritional benefits. It is growing in many regions, but information about nutritional properties of those growing in the Caribbean i…
View article: Influence of six essential oils on invasive <i>Solidago canadensis</i> L. seed germination
Influence of six essential oils on invasive <i>Solidago canadensis</i> L. seed germination Open
Solidago canadensis L. (SC) (Canadian goldenrod) is a dangerous plant invader in Europe, which suppress the indigenous flora. Essential oils (EOs) are considered biological control agents. GC-MS analysis for identification of main componen…
View article: Testing of different iron sources and concentrations on shoot multiplication of blackberry (Rubus fruticosus L.)
Testing of different iron sources and concentrations on shoot multiplication of blackberry (Rubus fruticosus L.) Open
The aim of this work was to evaluate shoot multiplication of two blackberry (Rubus fruticosus L.) cultivars ?Black Satin? and ?Loch Ness? on two culture media: Murashige & Skoog (MS) and its modification Murashige & Skoog Van der Salm medi…
View article: Phytotoxic and Antibacterial Activity of Essential Oil of New Peppermint Cultivar
Phytotoxic and Antibacterial Activity of Essential Oil of New Peppermint Cultivar Open
A new menthol cultivar of Mentha x piperita L. bred in East Slovakia was evaluated for the biological activity of its essential oils (EOs). The content and composition of the EO components changed during plant development and the different…