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Wyszukujesz frazę "seed germination dynamics" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Seed germination dynamics of some woody legumes: implication for restoration of arid zones ecosystems
    Autorzy:
    Buba, T.
    Ezra, A.G.
    Bako, S.P.
    Sabo, M.U.
    Powiązania:
    https://bibliotekanauki.pl/articles/28825291.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2023, 104, 4; 381-402
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of pH levels on soyben seed germination dynamics
    Wpływ poziomów pH na dynamikę kiełkowania nasion soi
    Autorzy:
    Rymuza, Katarzyna
    Radzka, Elżbieta
    Powiązania:
    https://bibliotekanauki.pl/articles/2216440.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydawnictwo PB
    Tematy:
    germination rate
    logistic function
    pH
    soybean (Glicine max (L.) Merrill)
    funkcja logistyczna
    soja (Glicine max (L.) Merrill)
    szybkość kiełkowania
    Opis:
    Background. Soybean is a legume of substantial economic importance. The quality and quantity of soybean yield are influenced by various factors include pH soil. Many species of plants have strictly specified physiological requirements concerning the soil pH mainly in early phases of plant development, i.e. seed germination. Traditional methods used in germination data analysis include geramination energy and germination capacity. An alternative may be use tuse of growth models to describe germination process. Mathematical models give considerable information resulting in parameter estimates with relevant biological interpretations. Material and methods. Soybean seeds (cv. Abelina, Merlin and SG Anser) collected from cultivated plants grown in experimental fields in 2017 and 2018 were analysed. Field experiment was conducted in Łączka, eastern Poland (52°15′ N; 21°95′ E). After harvest, samples of seeds were collected and analysed in the laboratory, seed germination parameters were determined at different pH values of the water solution (pH = 5.0, 5.5, 6.0, 6.5, 7.0). The numbers of germinated seeds were recorded during the period of 14 days. Logistic function was used to analyse cumulative germination curves over time. The function parameters: value of the horizontal asymptote coefficients and rate of increase in germination rate, were calculated. Results. Generally, the seed germination was the better in 2017 than 2018. The numbers of seeds germinating in 2017 had the highest theoretical asymptotic value (parameter a) and low values of coefficients k (germination rate parameter) and b (shape parameter). Differences were found also between seeds germinated at different pH levels. The pH values of 6 and 6.5 provided were associated with the most rapid germination of all the test cultivars. Based on the logistic function, the highest number of germinated seeds was recorded between day 4 and 6 (germination rate ranging from 18 to 21% per 24 hours). Conclusion. Testing of germination of cultivars at different pH levels of the medium might be of help while identifying and selecting genotypes for particular locations.
    Soja (Glycine max (L.) Merr.) jest jedną z najważniejszych roślin strączkowych na świecie. Na jakość i wielkość plonu soi mają wpływ różne czynniki, w tym kiełkowanie i pH gleby. Czas i sz ybkość kiełkowania to ważne parametry opisujące dynamikę tego procesu. W pracy przeanalizowano kiełkowanie nasion soi (odmiany: Abelina, Merlin i SG Anser) zebranych z roślin uprawianych na polach doświadczalnych w 2017 i 2018 roku. Na podstawie wyników doświadczenia laboratoryjnego oceniono dynamikę kiełkowania nasion w zależności od pH podłoża. Obliczono szybkość i tempo kiełkowania nasion oraz teoretyczną (asymptotyczną) wartość funkcji, wykorzystując w tym celu model logistyczny. Stwierdzono, że szybkość i tempo kiełkowania nasion pochodzących z doświadczenia z 2017 i 2018 roku były odmienne. Generalnie nasiona zebrane w 2017 roku charakteryzowały się większą szybkością i większym tempem kiełkowania niż nasiona zebrane w 2018 roku. Ponadto charakteryzowały się najwyższą teoretyczną wartością asymptotyczną (parametr a) oraz niskimi wartościami współczynników k i b. Odczyn podłoża o pH = 6 i pH = 6,5 warunkował najszybsze kiełkowanie nasion u wszystkich odmian.
    Źródło:
    Acta Scientiarum Polonorum. Agricultura; 2021, 20, 2; 81-88
    1644-0625
    Pojawia się w:
    Acta Scientiarum Polonorum. Agricultura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Soil Contamination with Diesel Oil on Germination Dynamics and Seedling Development of Selected Species of the Fabaceae family
    Autorzy:
    Pawluśkiewicz, Bogumiła
    Gnatowski, Tomasz
    Janicka, Maria
    Powiązania:
    https://bibliotekanauki.pl/articles/123318.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    Fabaceae family
    soil pollution
    diesel oil
    seed germination dynamics
    nonlinear function
    radicle
    Opis:
    The aim of the study was to determine the effect of soil contamination with diesel oil on the early development of three species of the Fabaceae family (Medicago lupulina L., Lotus corniculatus L., Trifolium repens L.). These species have a wide ecological range and they often occur on extensively used lawns. For these reasons, the knowledge on their tolerance to soil pollution with diesel oil can be of great importance in the creative and conservative cultivation of these plant species and their seed production for establishing the greenery of communication routes. The studies were carried out under controlled laboratory conditions. The soil substrates were composed of the loamy sand mixed with diesel oil in an amount of 2.5 g and 5.0 g per 1 kg of absolute dry mass of soil. The germination dynamics were analyzed. The measurements were conducted twice a day for 12 days after sowing. The development of seedlings was determined on the basis of the length, diameter, area and volume of the radicle. These features were determined on 20-day-old seedlings of the tested species. For the analysis of plant material, the technique of the scanned image was used in the “WinRhizo PRO 2009” software. It was proven that the tested species have various tolerances for the petrol oil in the soil and demonstrate various defense mechanisms under the stress conditions. The least changes of the seed germination rate on the soil with diesel oil against the control were indicated for L. corniculatus. The defense strategy of that species relied on the radicle development through increasing the diameter and – in consequence – the surface and the volume. M. lupulina also showed good germination capacity in the presence of diesel oil, but the radicle was shorter in comparison to the control. The germination rate of T. repens in the contaminated soil was significantly reduced. The recommendation for using not only L. corniculatus, but also M. lupulina on the contaminated areas should be taken into consideration.
    Źródło:
    Journal of Ecological Engineering; 2020, 21, 1; 210-218
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of corona discharge field on seed viability and dynamics of germination
    Autorzy:
    Lynikiene, S.
    Pozeliene, A.
    Rutkauskas, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/26555.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    corona discharge field
    viability
    germination dynamics
    seed viability
    Źródło:
    International Agrophysics; 2006, 20, 3
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of sowing depth and seed size on the dynamics of germination and productivity of spring wheat
    Autorzy:
    Sułek, Alicja
    Ogórkiewicz, Monika
    Powiązania:
    https://bibliotekanauki.pl/articles/2148088.pdf
    Data publikacji:
    2020-12-30
    Wydawca:
    Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
    Tematy:
    spring wheat
    seed size
    sowing depth
    germination rate
    grain yield
    yield components
    Opis:
    In the years of 2013–2014, pot experiments were conducted to determine the influence of sowing depth and seed size on the dynamics of spring wheat emergence and yields. The study was carried out in Mitscherlich pots using the random block method, in four replications. The experiment included spring wheat cultivar Tybalt. The first factor of the experiment was the sowing depth of seeds (1, 3, 5, 7 cm), while the second factor was the seed yield. Four levels of the second factor were taken into account: a1 – certified material (purchased), a2 – small-sized seeds (1.8 – 2.2 mm), a3 – medium seeds (2.2 – 2.5 mm), a4 – large seeds (> 2.5 mm). Adequate size of seeds for the study was ensured by sorting out of the certified material on Vogel screens. The research showed the joint impact of seed size and sowing depth on grain yield formation, number of plants and ears per pot and production tillering. The application of the sowing depth of 7 cm resulted in a significant decrease in grain yield from the pot of all seed fractions, especially the smallest fraction of seeds (1.8 – 2.2 mm). The variant of sowing large seeds (> 2.5 mm) at the depth of 3 cm turned out to be the most beneficial for grain yield.
    Źródło:
    Polish Journal of Agronomy; 2020, 43; 63-69
    2081-2787
    Pojawia się w:
    Polish Journal of Agronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Contribution to the characteristic of Cladium mariscus [L.] Pohl population in the initial zone of floating mat on an oligo-humotrophic lake in North-Eastern Poland
    Autorzy:
    Namura-Ochalska, A
    Powiązania:
    https://bibliotekanauki.pl/articles/56588.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    capacity
    Cladium mariscus
    Polska
    spatial structure
    oligo-humotrophic lake
    clonal growth
    population dynamics
    seed germination
    diaspore production
    Opis:
    In the initial phase of growth in an oligo-humotrophic lake, Cladium mariscus forms a dense and tall sawgrass bed invading the open water in the form of a floating mat. High densities of submerged evergreen perennial stems of C. mariscus, over two metres high and abundantly fruiting, ensure its persistence, and form a natural barrier to the invasion of other species. Dense mats of sawgrass are formed as a result of clonal and rhizome growth. Although diaspore production is abundant under natural conditions, only vegetative propagation of stems was observed. In different variants of the experiment only seeds wintering on stems of mother plants were capable of germinating. Hard seed coats had an important effect on the germination capacity of seeds.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2005, 74, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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