We investigated the effect of chromium (20-40 g m-3, 8-72 h) on photosystem 2 (PS2) activities Chlorella pyrenoidosa cells. By using chlorophyll fluorescence transients, thermoluminescence, oxygen polarography, and Western blot analysis for D1 protein we found that inhibition PS2 can be accounted by enhanced photodestruction reaction centres in cells cultivated presence Cr(VI) at 25 °C "white light" (18 W m-2). Hence is caused an oxidative stress lipid peroxidation, as indicated appearance a...

The photosynthetic pigments and photochemical efficiency of photosystem 2 (PS2) were studied in four constitutive species (Achillea millefolium L., Festuca pseudovina Hack. ex Wiesb., Potentilla arenaria Borkh., Thymus degenianus Lyka) a semiarid grassland South-eastern Hungary. Every displayed typical sun-adapted traits substantial plasticity the composition functioning apparatus. contents chlorophylls (Chls) carotenoids (Cars) on dry matter basis declined from May to July, however, amount...

The primary goal of this study was to investigate the utility high ground (1 m) and spectral (253 bands) resolution airborne hyperspectral imagery several classification approaches for detecting most problematic invasive plant species in Mid-Ipoly-Valley. AISA Eagle II sensor applied map a NATURA-2000 site on Hungarian-Slovak cross-border site. This focused mapping goldenrod (Solidago sp.) milkweed (Asclepias syriaca) two selected areas. During image analysis, SAM method used by dataset....

The Ipoly Valley is a natural habitat along the River, only slightly affected by water management; therefore, this an especially sensitive area and reflects well vegetation changes in driest (2020) wettest (2010) years. study’s aim to identify within habitats evaluation of types’ boundaries. For study, hand-held GPS device was applied on-site. identification based on General National Habitat Classification System (Á-NÉR). In addition on-site data, Sentinel-2A satellite data were used compare...

Enhanced UV-B radiation may have many direct and indirect effects on physiology of plants. Different species exhibit varying degrees resistance susceptibility to which change when other stresses are present. In the present study we investigate responses sessile oak seedlings exposed supplemental water stress. One year old were grown acclimated under white light 300 m mol m-2 s-1) for 2 weeks then treated with 150 W cm-2 4 weeks. Then a set both in control chambers stress by withholding Leaf...

Our work aimed to reveal UV-B sensitivity of beech both in field, and outdoor conditions. We examined the role radiation activation photoprotective mechanisms photoinhibition photodamage photosynthetic apparatus under hight light intensity. results indicate that natural irradiances increase carotenoid content - especially xantophyll cycle pigments activity resulted not only by visible but also radiation. These have important processes apparatus. Amount these decreased exclusion, increased...

At Kompolt, since 2015 we have been testing environmentally friendly nutrient supply methods for arable crops. The utilisation of the nutrients depends on amount and distribution rainfall during growing season. In 2022, there was an extreme drought in Hungary, with from May to September 60-80% below 40-year average, which resulted failures maize yield many parts country. given year, set up experiments 3 different plant conditioners (1. amino acids, 2. P+Zn+K+Mo, 3. ion Zn) cultivars measured...

The Fleischmann Rudolf Research Institute in Kompolt is not only famous for plant breeding but the institute also surveys effects of different nutrient supply methods since 1918. In 2017, we joined this research supported by EFOP 3.6.1 project. Our aim was to investigate photochemical processes – which one most determinant case yield crops vivo field measurements. We measured chlorophyll content leaves using Minolta SPAD 502. used miniPAM fluorometer determine actual efficiency and...

The effects of soil bacteria treatments on barley and wheat (1. treatment: stubble decomposers + inoculators; 2. regenerators; 3. control) were studied at the Agricultural Research Institute in Kompolt spectral vegetation indices which are closely related to photochemical processes photosynthetic pigments leaves. We applied vivo field measurements: SPAD 502 relative chlorophyll meter ASD Field Spec Pro 3 spectroradiometer. This work presents results experiments 2019, moreover, we compared...

Our study aimed at to test the effects of two different plant conditioners on some morphological parameters, yield and grain quality winter wheat (Babona) in a field experiment with medium plots, investigate physiological parameters closely related quantity beginning ear emergence by vivo measurements. At we determined relative chlorophyll content leaves (SPAD value), moreover leaf reflectance was measured portable spectroradiometer produce spectral vegetation indices that can be used...

A parlagfű pollenje altal okozott allergias hatasok minden evben emberek millioinak eletminőseget rontjak a noveny viragzasanak idejen, mivel viragpora az igen erősen allergen**** csoportba tartozik. Tanulmanyunkban uromlevelű (Ambrosia artemisiifolia) elleni vedekezest kivanjuk bemutatni allam alkalmazott hatosagi eljarasok szemszogeből, ismertetve ellenőrzes es szaknkcionalas folyamatat eredmenyesseget. Megvizsgaltuk, hogy intezkedesek mennyiben tudjak korlatozni terjedeset pollenszorasat?...

The experiments were set up in large parcels at the Fleischmann Rudolf Research Institute of Eszterházy Károly University located Kompolt. We carried out measurements by using a Penetronik penetrometer (electrical soil cone penetrometer) experimental site, where brown grassland as well clay washed forest are typical types. device used primarily serves to investigate physical and water management properties soils suitable for agricultural cultivation. instrument is hand-operated tool...