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    Wyświetlanie 1-9 z 9
    Tytuł:
    Analysis of net leaf photosynthesis in Aegiceras corniculatum (L.) Blanco under various saline conditions
    Autorzy:
    Muthuraman, B.
    Robert, G. Amalan
    Mathivanan, S.
    Jayakumar, K.
    Kannan, T. M. Satheesh
    Ranganathan, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1062837.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aegiceras corniculatum
    Photosynthesis
    salinity
    sodium chloride
    Opis:
    In the present investigation, a comparative study was made on the effect of exogenous addition of sodium chloride on net leaf photosynthesis (CO2 uptake) in Aegiceras corniculatum (L.) Blanco, a dicotyledonous mangrove species. The net leaf photosynthesis of A. corniculatum was modified in the presence of sodium chloride, it may be called a preferential halophyte. Salinity is one of the most significant environmental challenges also abiotic constraints limiting plant productivity. A. corniculatum could tolerate up to 800 mM sodium chloride concentrations. The net leaf photosynthesis rate was increased with increasing NaCl salinity up to 400 mM. This concentration was found to be the optimum salinity level for this species. In conclusion, it may be inferred that sodium chloride promoted the photosynthesis concentrations upto optimum level of 400 mM in Aegiceras corniculatum (L.) Blanco. beyond 400 mM NaCl decreased the CO2 uptake. The maximum photosynthetic obtained at 400 mM NaCl on the l20th day.
    Źródło:
    World Scientific News; 2019, 127, 3; 153-162
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photosynthetic activity of some domestic and foreign cultivars of Lolium perenne L. under conditions of sodium chloride salinity
    Aktywność fotosyntetyczna niektórych krajowych i zagranicznych odmian życicy trwałej (Lolium perenne L.) w warunkach zasolenia chlorkiem sodu
    Autorzy:
    Borowski, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/26736.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    photosynthetic activity
    domestic cultivar
    foreign cultivar
    rye-grass
    Lolium perenne
    sodium chloride
    salinity
    Opis:
    In pot experiments carried out in 2005 and 2006, tolerance to sodium chloride salinity of 4 cultivars of perennial ryegrass (Lolium perenne) (‘Nira’, ‘Stadion’, ‘Ronija’, ‘Darius’) was studied. Three concentrations of NaCl in medium (earth + sand): 0.0 mM (control); 50 mM; 100 mM, were used in the investigations. In three successive crops of grass, fresh weight yield of leaves, stomatal conductance, photosynthesis intensity, content of chlorophyll and PS II maximum quantum yield (Fv/Fm) were determined. The obtained results showed that perennial ryegrass is a species tolerant to NaCl salinity. Among the studied cultivars, cv. ‘Ronija’ showed the highest tolerance, whereas cv. ‘Nira’ showed the lowest. The growth of perennial ryegrass plants under salinity conditions was limited by low stomatal conductance of leaves and photosynthesis, but not by the photosynthetic activity of chlorophyll and its contents.
    W doświadczeniach wazonowych prowadzonych w 2005 i 2006 roku badano tolerancję na zasolenie chlorkiem sodu 4. odmian życicy trwałej (‘Nira’, ‘Stadion’, ‘Ronija’, ‘Darius’). W badaniach zastosowano 3 stężenia NaCl w podłożu (ziemia + piasek): 0,0 mM (kontrola); 50 mM; 100 mM. W trzech kolejnych zbiorach trawy określono: plon świeżej masy liści, przewodność szparkową, intensywność fotosyntezy, zawartość chlorofi lu, maksymalną wydajność kwantową PS II (Fv/Fm). Uzyskane wyniki wykazały, że życica trwała jest gatunkiem tolerancyjnym na zasolenie NaCl, a w obrębie badanych odmian najwyższą tolerancją charakteryzowała się odm. ‘Ronija’, a najniższą odm. ‘Nira’. Wzrost roślin życicy w warunkach zasolenia ograniczany był niską przewodnością szparkową i fotosyntezą, a nie aktywnością fotosyntetyczną chlorofilu (Fv/Fm) i jego zawartością.
    Źródło:
    Acta Agrobotanica; 2008, 61, 2
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of NaCl and supplemental calcium on growth parameters and nitrate reductase activity in maize
    Autorzy:
    Sacala, E
    Biegun, A.
    Demczuk, A.
    Grzys, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/56757.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    nitrate reductase
    calcium
    growth parameter
    sodium chloride
    potassium
    soil salinity
    salinity
    plant nutrition
    maize
    Opis:
    In this study, investigated were the effects of NaCl (60 mmol/dm-3) and NaCl supplemented with different salts (5 mmol/dm-3 CaCl2, CaSO4, CaCO3, KCl), on growth of two maize varieties (Cyrkon and Limko). After 7 days of cultivation in nutrient solution the growth response to salinity of both maize varieties was similar. NaCl led to a dramatic decrease in growth of plants (approx. 50% reduction in fresh and dry weight of root, and 70% reduction in fresh weight of shoot). Addition of extra Ca2+ or K+ to nutrient solution containing NaCl did not definitely improve the growth parameters of maize. However, among the tested salts, CaCl2 had a beneficial visual effect on maize seedlings. In other cases the plants showed noticeable symptoms of salt damage. In long term exposure to salinity (two weeks) growth of Cyrkon was more inhibited than Limko. Comparison of growth responses in short-term exposure to salinity (7 days) with long-term (14 days) showed that in Cyrkon variety the negative effects of NaCl were intensified and addition of CaCl2 to salinized solution had not positive effects on growth. On the contrary, in Limko variety, there was a significant improvement in growth (especially in root dry weight). This fact indicates that during longer exposure to salinity Limko was able to adapt to those conditions. Salinity caused a significant decrease in leaf nitrate reductase activity (60% and 30% reduction respectively in Limko and Cyrkon). Addition of CaCl2 to salinized nutrient solution resulted in greater enzyme inhibition in Cyrkon (50% decline in relation to plants grown under sole NaCl), and 30% increase in Limko. Inhibition of nitrate reductase activity did not cause a decrease in concentration of soluble protein in maize leaves.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2005, 74, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ameliorative effect of CaCl2 on growth, membrane permeability and nutrient uptake in Oryza sativa grown at high NaCl salinity
    Autorzy:
    Anbu, D.
    Sivasankaramoorthy, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/10791.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    ameliorative effect
    calcium chloride
    pot experiment
    plant growth
    membrane permeability
    nutrient uptake
    Oryza sativa
    sodium chloride
    salinity
    Opis:
    A pot culture was carried out with Oryza sativa L. vari-Co-39, to investigate the effects of supplementary calcium chloride on plants grown at NaCl (50mM) concentration. Treatments were: (1) Control: nutrient solution alone (C); (2) nutrient solution plus 50mM sodium chloride (NaCl); (3) nutrient solution plus 10mM calcium chloride (CaCl2); (4) nutrient solution plus 15mM calcium chloride (CaCl2); (5) nutrient solution and 50 mM NaCl plus supplementary 10 mM CaCl2 (NaCl + CaCl2); and (6) 50 mM NaCl plus additional mixture of 15 mM CaCl2 in nutrient solution (NaCl + CaCl2). The plants grown under salt stress produced low dry weight and relative water content than those grown in standard nutrient solution and in CaCl2 alone. Supplemental calcium chloride added to nutrient solution containing salt significantly improved growth and relative water content. Membrane permeability increased with high NaCl application and these increases in root membrane permeability were decreased with supplementary Ca. The concentration of chloride (Cl) increases highly for all treatments. Sodium (Na) concentration in plant tissues increased in both shoots and roots at high NaCl treatment. Application of supplementary Ca lowered Na concentration. Concentrations of Ca. K and N were at deficient ranges in the plants grown at high NaCl levels and these deficiencies were corrected by supplementary Ca. The ameliorating effect of Ca on growth and physiological variables could reduce the negative effect of salinity of Oryza sativa L., plants.
    Źródło:
    International Letters of Natural Sciences; 2014, 03
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Antifungal activity of sodium chloride on Saprolegnia diclina and Aphanomyces sp.
    Autorzy:
    Ali, E H
    Powiązania:
    https://bibliotekanauki.pl/articles/67745.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    antifungal activity
    sodium chloride
    Saprolegnia diclina
    Aphanomyces
    zoosporic fungi
    fungi
    salinity
    morphogenesis
    biochemical activity
    sporulation
    Opis:
    Sixteen identified and three unidentified species belonging to six genera of zoosporic fungi were isolated from forty water samples which were collected from different fish and fish hatcheries farms at Abbassa city, Sharkiya governorate, Egypt, using sesame seeds baiting technique at 20±2°C. Saprolegnia and Achlya contributed the broadest spectra of species diversity amongst the other genera of zoosporic fungi. Saprolegnia diclina and Aphanomyces sp. were the most prevalent species of zoosporic fungi. The abundance of zoosporic fungal species in these aquacultures was correlated with some physicochemical characteristics of the water samples. The two dominant species of zoosporic fungi were tested for their tolerance of NaCl solution and its impact on some morphological and metabolic activities of these fungi. Saprolegnia diclina tolerated concentrations of NaCl solution till 12000 μg/ml whereas the maximum resistance of Aphanomyces sp. was 8000 μg/ml. The examined morphological aspects of the two studied fungal species, which included the colony diameters, the vegetative hyphae, zoosporogenesis, zoospores discharge, sexual reproductive structures and gemmae formation, were generally affected depending upon the tested fungal species and the applied dose of NaCl solution. The low treatments of NaCl solution were significantly stimulative compared with the control for protease production by S. diclina but higher doses were significantly suppressive. A significant decline in protease activity at all applications was found when Aphanomyces sp. was treated with NaCl solution. The total free amino acids and total protein content of S. diclina and Aphanomyces sp. mycelia were almost significantly increased relative to untreated controls at the low dose of NaCl solution and they were significantly dropped at the higher concentrations by the two zoosporic fungi.
    Źródło:
    Acta Mycologica; 2009, 44, 1; 125-138
    0001-625X
    2353-074X
    Pojawia się w:
    Acta Mycologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growth and mineral constituents’ variations in halophytic species under salinity
    Autorzy:
    Silambarasan, N.
    Natarajan, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/11313.pdf
    Data publikacji:
    2014
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    growth
    mineral constituent
    variation
    halophytic plant
    plant species
    Clerodendron inerme
    salinity
    sodium chloride
    morphological parameter
    mineral content
    sodium
    potassium
    calcium
    Opis:
    The present investigation was made to study the effect of different concentrations of sodium chloride on the growth and mineral constituents in different parts of Clerodendron inerme. The plant and could survive a wide range of 100-1000 mM of NaCl. The upper limit for the survival of Clerodendron inerme was 500 mM NaCl. However, favourable growth response by seedlings was confined to 200 mM NaCl. The morphological parameters such as shoot and length, number of leaves, total leaf area, fresh and dry mass and mineral constituents such as sodium, potassium and calcium were assessed.
    Źródło:
    International Letters of Natural Sciences; 2014, 05
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growth, evapotranspiration and mineral content of gerbera under combined salinity and excess boron
    Autorzy:
    Gomez Bellot, M.J.
    Carmassi, G.
    Bartalucci, M.
    Sanchez-Blanco, M.J.
    Pardossi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1959.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Ogrodnictwa
    Tematy:
    gerbera
    ornamental plant
    cut flower
    evapotranspiration
    mineral content
    salinity
    boron
    toxicity
    sodium chloride
    growth
    flowering
    nutrient uptake
    Źródło:
    Journal of Horticultural Research; 2018, 26, 2
    2300-5009
    Pojawia się w:
    Journal of Horticultural Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Proliferation of peroxisomes in pea root nodules - an influence of NaCl- or Hg2plus-stress conditions
    Autorzy:
    Borucki, W
    Powiązania:
    https://bibliotekanauki.pl/articles/58800.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    proliferation
    peroxisome
    pea
    root nodule
    sodium chloride
    stress condition
    Pisum sativum
    cytochemistry
    catalase activity
    morphometry
    salinity
    mercury treatment
    Opis:
    Morphometric procedures were used to examine peroxisome number and di-stribution in pea (Pisum sativum L.) root nodules under NaCl (50 mM) or HgCl2 (7.3 µM) treatment. Peroxisomes were visualized cytochemically in meristem, invasion zone and prefixing zone of pea root nodules by catalase (EC 1.11.1.6) activity. The observations using light and electron microscopy revealed that the peroxisomes were predominantly spherical in shape and showed catalase activity. In nitrogen fixation zone, catalase active peroxisomes were observed occasionally. Bacteroids of nitrogen fixing zone showed enhanced cata-lase activity probably as a response to higher level of oxidative stress. Fluorescence microscopy investigations revealed enhanced level of (homo)glutathione in prefixing and nitrogen-fixing zone of NaCl- and Hg2+treated nodules, which served as an indicator of antioxidative response. Morphometric measurements revealed that during differentiation of meristematic cells into central tissue (bacteroidal tissue) cells an increase in peroxisome number was observed in unstressed nodules. Peroxisomes located in meristem, invasion zone and prefixing zone of NaCl- and Hg2+-treated nodules outnumbered that in control nodules. A substantial enlargement of peroxisome profiles was detected in NaCl- and Hg2+treated nodules. Peroxisome divisions observed in meristematic and infection thread penetration zone were responsible for an increase in peroxisome number.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2007, 76, 4; 287-298
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of salinity on growth and organic compounds content of carrot (Daucus carota L.)
    Autorzy:
    Shiyab, S.
    Al-Qarallah, B.
    Akash, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/12691227.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    plant cultivation
    carrot
    Daucus carota
    Jordan cultivar
    Napoli cultivar
    vegetable
    plant growth
    plant development
    organic compound
    organic compound content
    relative water content
    sodium chloride
    salinity
    salinity impact
    salinity tolerance
    salt stress
    saline soil
    saline water
    cultivation experiment
    long-term experiment
    Opis:
    Carrot production of valuable carotenes, carbohydrate and protein are hindered by elevated salinity levels in many parts of the world. To assess this problem, germination and growth of two carrot cultivars (Daucus carota cvs Jordan and Napoli) were studied in vivo and in vitro under different salt stress concentrations (0, 75, and 150 mM NaCl). Seeds were directly or gradually exposed to these salt concentrations. With elevated salinity levels, significant reductions in growth parameters (dry shoot weight, fresh shoot weight, shoot length, root length, and root number) were observed. Also, significant difference in germination percentage was observed at 150 mM NaCl in both cultivars when compared with control treatment (90% germination percentage in Napoli and 71% in Jordan cultivar). Growth rate, tolerant index, and relative water content (RWC) declined as salinity increased. The 150 mM NaCl salinity treatment significantly reduced the shoot chlorophyll and protein content, but increased carbohydrate content. Lesser impairment by the gradual exposure of seedling to salinity provides an opportunity to study the acquirement of salt tolerance.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 6; 85-96
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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