Przeglądaj wg Autor "Matuszak-Slamani, Renata"

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  • Miniatura
    PozycjaOpen Access
    The Effect of Mannitol and Sorbitol on Soybean In Vitro Development
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2018) Kulpa, Danuta; Gawlik, Andrzej; Matuszak-Slamani, Renata; Włodarczyk, Małgorzata; Bejger, Romualda; Sienkiewicz, Mariola; Gołębiowska, Dorota; Semeniuk, Anna; Department of Plant Genetic, Breeding and Biotechnology, West Pomeranian University of Technology, Szczecin, Poland; Department of Physics and Agrophysics, West Pomeranian University of Technology, Szczecin, Poland; Department of Physics and Agrophysics, West Pomeranian University of Technology, Szczecin, Poland; Department of Physics and Agrophysics, West Pomeranian University of Technology, Szczecin, Poland; Department of Physics and Agrophysics, West Pomeranian University of Technology, Szczecin, Poland; Department of Physics and Agrophysics, West Pomeranian University of Technology, Szczecin, Poland; Department of Physics and Agrophysics, West Pomeranian University of Technology, Szczecin, Poland; Department of Plant Genetic, Breeding and Biotechnology, West Pomeranian University of Technology, Szczecin, Poland
    The aim of this study was to examine an effect of osmotic stress, induced by mannitol (Mn) and sorbitol (So) in concentrations (0–200 mM) on seed germination and development of common soybean (Glycine max L.) seedlings in in vitro conditions. The analysis of the effectiveness of the porcession was made by assessing the length of the stems and roots as well as the fresh and dry mass of 3-week-old seedlings. The biometric index values differed depending on the type of substance used. While Mn at the lowest concentration (50 mM) did not affect the biometric parameters studied, So (50 mM) stimulated the growth of seedlings, root elongation and the number of leaves and fresh weight of plants. The unfavorable effect on biomass was noticed at higher concentrations of both substances. Mn (> 50 mM – <150 mM) negatively influenced the fresh and dry content of the seedlings. In turn, Mn (150 and 200 mM) also caused growth inhibition, decreased number and length of leaves. So (200 mM) significantly inhibited the growth of seedlings, reducing the dry matter.
  • Miniatura
    PozycjaOpen Access
    Interactions between Light Intensity and Drought Stress and their Influence on the Growth of Wheat Seedlings
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2023) Matuszak-Slamani, Renata; Ulan, Maciej; Department of Bioengineering, West Pomeranian University of Technology in Szczecin, Poland
    In this paper, wheat seedlings were exposed to different levels of photon flux density (PFD) and drought stress. Seedlings of the wheat cv. Goplana were cultivated in controlled conditions in a miniphytotrone and exposed to three different photosynthetic photon flux densities (400, 800, and 1200 μmol⋅m−2⋅s−1) and drought stress (a water potential of −0.6 MPa). The Hoagland’s solution-treated seedlings served as a control. The fresh and dry matter of the overground parts and roots, relative chlorophyll concentration, electrical conductivity and chlorophyll fluorescence parameters were measured. Drought stress decreased the biomass of wheat seedlings, cv. Goplana. Higher intensities of photosynthetically active irradiation stimulated biomass growth both under control conditions and under drought stress. Drought and higher PFD intensity resulted in a decrease in chlorophyll content. Only the highest light intensity, together with drought stress, negatively affected the structure of cell membranes, increasing their permeability. Both of the applied stress factors did not cause significant changes in the values of the determined parameters of chlorophyll fluorescence in the leaves of wheat seedlings. These results suggest that the increase in light intensity has a mobilising effect on the plant, stimulating the development of biomass both under control conditions and under drought stress. No changes in the values of chlorophyll fluorescence parameters under the influence of different light intensities and drought stress may indicate that there were no significant disturbances in the course of the light phase of photosynthesis in the leaves of the tested seedlings.