Understanding the response of a crop to drought is first step in breeding tolerant genotypes. In our study, two maize (Zea mays L.) genotypes with contrasting sensitivity dehydration were subjected moderate conditions. The subsequent analysis their physiological parameters revealed decreased stomatal conductance accompanied by slighter decrease relative water content sensitive genotype. contrast, genotype maintained open stomata and active photosynthesis, even under Drought-induced changes...

In this investigation, the effect of salt stress on Portulaca oleracea L. was monitored at salinity levels 100 and 300 mM NaCl. At a concentration NaCl there decrease in stomatal conductance (gs) simultaneously with an increase CO2 assimilation (A) beginning exposure (day 3). However, leaf water potential (ψw), substomatal (Ci), maximum quantum yield photosystem II (Fv/Fm), proline malondialdehyde (MDA) content remained unchanged. Exposure to caused gs from day 3 potential, assimilation,...

This study monitors the effect of salt stress induced by a NaCl solution (0 - deionized water, 50, 100, 200, 300 mmol/L) in lettuce (Lactuca sativa L. cv. Orion), New Zealand spinach (Tetragonia tetragonoides (Pall) Kuntze) and common purslane (Portulaca oleracea Green Purslane) over course 50 days. The diverse reactions these monitored species to are well apparent from results. Lettuce proved as most sensitive stress, showing significant reduction dry weight, where even lower concentrations...

Salinity is a significant environmental factor affecting physiological processes in plants.This study monitors the effect of salt stress induced by NaCl solution (0 -deionized water; 50, 100, 200, 300 mmol/L) rocket (Eruca sativa (L.) Mill.) cv.Astro over course 50 days.Salt significantly affected monitored parameters.The osmotic potential decreased with increasing concentrations, while relative water content decrease did not take place until 200 mmol/L NaCl.Compared to control group,...

The response of selected photosynthetic and morphological parameters plants to drought was examined in 5 inbred lines maize (Zea mays L.) their 10 F1 hybrids. aim the study establish whether performance parental genotypes under conditions correlates with progeny net rate, chlorophyll fluorescence or content pigments could be used as reliable physiological markers for early breeding generations. relative importance additive nonadditive (dominance, maternal) genetic effects inheritance these...

The paper evaluates the impact of car transport on distribution and accumulation Zn, Cu, Pb Cd in soils, as well vegetation near a newly built R4 motorway Košice-Milhosť (Slovakia). Samples were taken from surface humus layer (litter) 0−5, 10−20 20−30 cm mineral layers Cambisol Luvisol, assimilatory organs Fraxinus excelsior, Quercus cerris, rubra, Negundo aceroides Anthriscus sylvestris growing segments geobiocoenosis Querci-Fageta Typica. concentrations total Zn Cu determined using SensAA...

A comparative analysis of various parameters that characterize plant morphology, growth, water status, photosynthesis, cell damage, and antioxidative osmoprotective systems together with an iTRAQ the leaf proteome was performed in two inbred lines maize (Zea mays L.) differing drought susceptibility their reciprocal F1 hybrids. The aim this study to dissect parent-hybrid relationships better understand mechanisms heterotic effect its potential association stress response. results clearly...

Currently, little is known about the spatial variability of significant soil properties and their relationships to forest ecosystems different vegetation grades. This work evaluates upper layer Cambisol taxa relationship altitude 2nd 5th grades selected in Western Carpathians using PCA regression analysis. The content clay, total carbon nitrogen, humus, energy, ash soils varied between 5.43 11.53 %, 21-65 mg g

The family Fabaceae traditionally serves as a food and herbal remedies source. Certain plants serve for treatment of menopausal symptoms based on presence typical secondary metabolites, isoflavones. Beside soybean clovers, other or cultures in vitro can produce these molecules. A cultivation be enhanced by elicitation that stimulates metabolites biosynthesis via stress reaction. Vanadium compounds have been already described potential elicitors, the aim this study was to determine impact...

This study was conducted to identify the physiological mechanisms associated with resistance and tolerance of young sunflower plants freezing temperatures.The effect overnight temperature -3°C on maximal quantum efficiency PSII (F v /F m ), relative electrolyte leakage (REL) osmotic potential (Ψ π ) determined in five genotypes sunflower: C33, C98, C124 C148 were chosen from population recombinant inbred lines (RILs) based contrasted responses low temperature, a wild genotype 2603 that for...

This study analyzes the effects of acetaminophen (APAP) as a contaminant on physiological characteristics lettuce plants (Lactuca sativa L.). Experiments were provided in an experimental greenhouse with semi-controlled conditions. The effect different amounts was evaluated by using regression analysis. Plants grown five concentrations APAP: 0 µM, 5 50 500 and mM for 14 days two variants, acute chronic. obtained results show that monitored parameters demonstrably influenced variant. are more...

At present, a serious problem is the loss of soil nutrients in forest ecosystems with acidic atmospheric deposition and heavy metal contamination, which can have negative impact on plant growth. The objective research was to verify, whether different distance (1.5 18 km) from Al smelter Žiar nad Hronom (Slovak Republic) affects physiology macronutrient contents (Ca, Mg, K, Na) leaves Cambisols nudal beech forests Slovenské stredohorie Mts. In surface humus horizons significantly lower amount...

Different species of Triticum were grown during a greenhouse experiment, including T. monococcum L., dicoccum Schrank, durum Desf., spelta L. and aestivum cv. Vánek. The goal was to establish the influence irradiance on parameters photosynthetic performance in relation their ploidy. Photosynthetic rate (Pn), transpiration (E) stomatal conductance (gs) measured at ranging from 217-1305 µmol/m2/s. In all monitored species, saturation for photosynthesis level 609 µmol/m2/s reached. highest...

The relationship between vegetation and selected soil characteristics in different monoculture forest types was investigated as part of a landscape restoration project after brown coal mining. Six were selected: alder (Alnus sp.), spruce (Picea pine (Pinus larch (Larix long-term deciduous (Quercus robur, Tilia created by spontaneous succession. These stands classified into two age categories (younger older). attributes, C/N, TC, TN, pH, A horizon depth assessed. observed species categorized...

The use of stimulation preparations seems to be a promising means for mitigating the effects abiotic and biotic stressors. Their significance includes plant organism metabolism optimisation, water regime, nutrition during periods stress. They help bridge it over create conditions rapid regeneration. In field experiment, effect application on cultivars Triticum aestivum L. with different genetic composition was evaluated (donor blue aleurone colour KM-72-18; donor multi-row spike (MRS)...

Water deficit (drought) is still one of the most important stress factors affecting not only yields, but also production quality. Breeders are focusing on breeding cultivars and crop lines that more resistant to water shortages. In addition breeding, for example, size roots changes in color leaves, focus changing morphotype i.e. long chaff, multirowed ear. It predicted wheat genotypes with a change should be drought tolerant. Therefore, our research focused study physiological parameters...

The objective of this research was to evaluate trends and relationships energy toxic elements accumulation in A-horizon (the depth 0-5 cm) soils selected plants the hemioligotrophic (Dystric Cambisols) oligotrophic (Skeletic-Rustic Podzols) spruce ecosystems situated along transect (750-1110 m a.s.l.) NP Slovenský raj (Eastern Slovakia). results showed that EU limit values risk agricultural were exceeded for Cu Cd at altitude 750-760 a.s.l., case also above 1000 a.s.l. Relationship between...

This study analyses the effects of expressways on physiology and risk elements content in plants (Quercus cerris L., Prunus spinosa Melica uniflora Retz.) soils. Study forest stands are located at a distance 30 m to 8100 from expressway 'R1 Nitra - Tekovské Nemce' (southwest Slovakia). The effect road cadmium (Cd) soils indicated an increase element mineral layers variant; excessive Cd values were recorded O-horizons background zone. Also copper (Cu) showed marked enrichment surface horizons...

This paper evaluates the influence of ontogeny and position bine offshoot leaves on rate photosynthesis (Pn), transpiration (E) stomatal conductance (gs) in hop plants. In influencing Pn, E gs among hops. The highest Pn was measured phase 81-89 BBCH 61-69 BBCH. increased over course from 1st to 3rd level From 61 phase, first second achieved a photosynthetic maturity value no longer increased. third-level 81 phase. Higher upper parts plant. were higher third plant entire vegetation period....

This paper evaluates the response on rate of photosynthesis (Pn), transpiration (E), stomatal conductance (gs) and water use efficiency (WUE) in 15 genotypes young hop plants (19 BBCH) grown greenhouses conditions deficit for period 9 days. On 9th day, relative content experimental fluctuated between 70.14-75.20%. The levels Pn gs evidently dropped monitored species as a result deficit. decrease compared with control group was largest Saaz Os. cl. 72 (by 77.5%), Magnum 73.3%) Columbus...