Polyphasic chlorophyll α fluorescence represents a promising tool for detection of plant tolerance to various environmental stresses. In pot vegetation experiments, plants seven winter wheat varieties were screened their drought tolerance. The stress was initiated in by withholding water at the beginning anthesis. While content measured continuously as relative (RWC), fast kinetics and analysed on dehydrating intact leaves JIP-test (analysis O-J-I-P transient). Maximum quantum efficiency PS...

Nitrogen deficiency influences importantly the plant photosynthetic capacity and crop productivity. Here, we employed rapid, non-invasive measurements of chlorophyll a fluorescence kinetics for calculation integrative parameters related to leaf performance. In pot experiments with winter wheat (Triticum aestivum L.) cultivated plants during whole growing period in soil substrate supplied four different doses nitrogen. The nitrogen content as well dry mass were analyzed after records three...

Abstract The impact of the genotype‐specific leaf morphological and anatomical characteristics on ability wheat plants to preserve water balance cell membranes stability under drought stress was investigated. Seedlings six modern semi‐dwarf (carriers Rht, R educed h eigh t genes) old tall bread varieties were subjected soil by withholding watering for 6 days. Morpho‐anatomical traits (leaf area, perimeter, thickness, stomata trichome density) daily watered (control) characterized light...

Nitrogen deficiency strongly influences crop photosynthetic performance and biomass production.In this study, we applied rapid, non-invasive records of chlorophyll a fluorescence kinetics for evaluation wheat (Triticum aestivum L.) leaf performance.Plants were grown during the whole season in big pots filled with soil substrate they supplied by different doses nitrogen nutrition.The plant content as well aboveground analyzed after three growth stages.Our results confirmed that maximum...

Photosynthesis limitation by CO2 flow constraints from sub-stomatal cavities to carboxylation sites in chloroplasts under drought stress conditions is, at least some plant species or crops not fully understood, yet. Leaf mesophyll conductance for (gm) may considerably affect both photosynthesis and water use efficiency plants conditions. The aim of our study was detect the responses gm leaves four winter wheat (Triticum aestivum L.) genotypes different origins long-term progressive drought....

Excessive N loss through leaching and volatilization is a major concern in modern agriculture, reducing use efficiency, groundwater contamination, environmental degradation. To address these issues, this research evaluates the impact of fertilizers containing nitrification inhibitors (NIs), which restrict conversion ammonium (NH4+) into nitrate (NO3−), thereby enhancing retention soil. This study examines effects different fertilizer applications on yield nutrient dynamics winter barley...

Soil water scarcity hinders crop productivity globally, emphasizing the imperative for sustainable agriculture. This study investigated role of nitrogen in alleviating drought stress barley. Parameters such as relative content, photosynthetic rate, stomatal conductance, mesophyll concentration CO2, total leaf nitrogen, grain yield, organic starch and macronutrient concentrations (N, P, K, Ca, Mg) were examined. The optimal yield (3.73 t·ha−1) was achieved with 1 g per container (near 200 kg...

The primary focus of the review is on physiological, biochemical, and agronomic aspects plant-based proteins, with particular emphasis their effectiveness as both food sources biostimulants. A comprehensive peer-reviewed articles, scientific journals, industry reports was conducted using databases such PubMed, Scopus, Web Science. Various plant species including cereals, legumes, oilseeds, nuts, pseudocereals, tubers are recognized promising plant-derived proteins. exploration biodiversity...

An effect of nitrogen rates (0.0 g, 1.0 2.0 g N per pot) on NRA (nitrate reductase activity) in leaves spring barley (cultivar Kompakt) was investigated a pot experiment. Plants were grown under optimum moisture regime and drought stress induced during the growth stages tillering, shooting earing. Before after respective period plants optimal water regime. In all fertilized unfertilized treatments, significantly higher than conditions. Nitrogen fertilization alleviated adverse effects yields...

Dynamics of crop growth and photosynthesis are two main processes that major importance for adaptation plants to their environment. Two experiments were carried out during 2005 2006 with sun shaded barley plants. The results showed leaf area increased position on the stem up 5 6 plants, then declined towards flag leaves. Air temperature affected appearance, mainly at beginning growing season. A positive correlation between expansion duration (LED) accumulated sum was measured both variants,...

This study investigates the impact of nitrogen (N), sulfur (S), and iron (Fe) fertilization on secondary metabolites, particularly quercetin its forms, in onion bulbs (Allium cepa L.). Field experiments over two years examined four varieties with red, yellow, white colors bulbs: Kamal, Robin, Pueblo, Mundo. The parameters investigated included yield, dry matter content, average weight. phenolic flavonoid contents were also analyzed. free quercetin, bound total determined using HPLC method....

The trial with 11 genotypes of winter oilseed rape (Brassica napus subsp. napus) different provenance was based on experimental station Borovce near SCAR – RICP Piešťany (Slovak Republic) in autumn 2008 (the Trnavská pahorkatina locality, altitude 167 m, maize growing region). Approximately weekly intervals, since beginning April to middle June 2009, for the purpose growth analysis, plants all were taken. curves leaf area development simulated from data size using software application. Based...