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Phytoseiid mites on conifers
65-69Views:60The abundance and species diversity of phytoseiids were studied in the evergreen collection of the Corvinus University of Budapest at Soroksár from March to August 2010. 329 phytoseiid mite specimens were collected from 15 cultivars of coniferous trees belonging to the following 4 genera: Juniperus, Abies, Picea and Pinus. 6 phytoseiid mite species have been identified: Amblyseius andersoni (Koch, 1957), Amblyseius tenuis Westerboer 1963, Anthoseius bakeri (Garman, 1948), Anthoseius involutus Livshitz et Kuznetzov 1972, Typhlodromus baccetti Lombardinii 1960 and Typhlodromus cotoneastri Wainstein 1963.
The dominant phytoseiid species were Amblyseius andersoni and Anthoseius involutus.
Amblyseius tenuis and Typhlodromus baccettii are new to the Hungarian fauna. Typhlodromus baccettii was found on Juniperus scopulorum 'Silver Star' and 'Moonglow' while Amblyseius tenuis was collected from Picea glauca 'Alberta Globe'. -
The bioactive compounds of sour cherry (Prunus cerasus) with special regards to antioxidant activity and antioxidant density
83-87Views:165Evidence suggests that a diet high in fruits and vegetables may reduce the risk of chronic diseases, such as cardiovascular disease and cancer, and phytochemicals including phenolics, flavonoids and carotenoids from fruits and vegetables may play a key role in reducing chronic disease risk. Recent research has proven that sour cherry (Prunus cerasus L.) is a valuable natural source of some bioactive compounds important in human health preservation.
In our work, we identified the total antioxidant capacity and ”antioxidant density” of sour cherry varieties named ”Újfehértói fürtös”, ”Debreceni bõtermõ”, ”Kántorjánosi” and ”Érdi bõtermõ” and those of the ”Bosnyák” sour cherry clones. ”Antioxidant density” is a biological value indicator obtained in a synthetic way, which indicates the antioxidant capacity of the particular food, e. g. fruit and vegetable, per 1 Calorie. -
Fruit quality of sweet cherry cultivars in superintensive orchards
75-81Views:165The fruit quality of 15 sweet cherry cultivars (’Canada Giant’, ’Celeste’, ’Chelan’, ’Ferrovia’, ’Germersdorfi Rigle’, ’Katalin’, ’Karina’, ’Kordia’, ’Linda’, ’Regina’, ’Sam’, ’Sandra Rose’, ’Sunburst’, ’Sylvia’ and ’Techlovan’) was studied under super-intensive growing conditions at Nagykutas. We measured the fruit diameter, fruit width, fruit height, stem length and stem weight, fruit and pit weight and the total dry matter content. There were large differences among the cultivars. These differences are due to the genetic characteristics of fruits because all other conditions were the same. For 11 cultivars, we collected fruit samples several times /2-4/. We examined on this cultivars all the above listed fruit quality parameters. When examining these samples, we have gained information how earlier or later than optimal harvest time influences fruit quality.
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Testing a biological active plant extract’s antifungal effect against soil fungi
247-252Views:95In Hungary today is about 5 million hectares of agricultural land contaminated with ragweed. The ragweed problem a year is about 60 billion HUF to be paid, of which 30 billion are used to reduce the agricultural damage. Experiments with ragweed pollen has mainly been carried out in connection with terms of allergy. The other biochemical experiments and studies with this plant, have so far been the scientific horizons of public life, boosted the edge. We wanted to demonstrate that the ragweed, which is a weed, containsbiological active (for example: antifungal) compounds. For our experiments in the previous cycle of flowering, plants were collected manually, with its roots and with each plant part. The extraction of the substance from dry plant – meal was carried out using appropriate solvents. The biological activity of ragweed-extracts were tested against fungi isolated from soils and meadow with different mode of cultivation. Our results suggest that ragweed contains biologically active substances, which inhibit the growth of fungi, depending on the concentration of active ingredients of the plant.