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    Wyświetlanie 1-5 z 5
    Tytuł:
    Porosity and water useful for plants in Luvisols created from sandy silt and silt
    Autorzy:
    Witkowska-Walczak, B.
    Turski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/25087.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    silt
    sandy-silt
    pore size
    soil
    development
    crop yield
    plant growth
    porosity
    water regime
    distribution
    water balance
    Źródło:
    International Agrophysics; 2004, 18, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wplyw stresu suszy na rozwoj i plonowanie dwoch genotypow bobiku
    Autorzy:
    Podlesny, J
    Kocon, A
    Powiązania:
    https://bibliotekanauki.pl/articles/807888.pdf
    Data publikacji:
    2006
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    wilgotnosc gleby
    genotyp
    rozwoj roslin
    wzrost roslin
    kwitnienie
    zawiazywanie strakow
    plonowanie
    susza glebowa
    fotosynteza
    bobik
    soil moisture
    genotype
    plant development
    plant growth
    flowering
    pod setting
    yielding
    soil drought
    photosynthesis
    faba bean
    Opis:
    Badania prowadzono w Instytucie Uprawy Nawożenia i Gleboznawstwa w Puławach, w wazonach Mitscherlicha. Czynnikiem I rzędu były dwa genotypy bobiku: ‘Nadwiślański’ - typ tradycyjny i Tim’ - typ samokończący, a czynnikiem II rzędu była wilgotność gleby: 30, 50 i 70% p.p.w, którą zróżnicowano w okresie kwitnienie-dojrzewanie. Zmniejszenie zawartości wody w glebie silnie ograniczało rozwój i plonowanie obydwu odmian bobiku. Bobik odmiany Tim’ był bardziej wrażliwy na niedobór wody w glebie niż odmiana 'Nadwiślański’. Obniżka plonu nasion uzyskanego z roślin rosnących w warunkach niższej wilgotności gleby wynikała z mniejszej obsady strąków na roślinie i mniejszej liczby nasion na roślinie.
    The study was conducted in Mitscherlich pots at the Institute of Soil Science and Plant Cultivation in Puławy. The first row factor in this experiment were two morphologically different cultivars of faba bean: ‘Nadwiślański’ - traditional type and ‘Tim’ - determinate type, and the second row factor was the soil moisture: 30, 50 and 70% field water capacity, which was differentiated in the period from flowering to maturity. The decreased water content of the soil strongly reduced both the development and yielding of faba bean. Faba bean ‘Tim’ cultivar was more susceptible to water deficit in the soil than was ‘Nadwiślański’ cultivar. The reduction of seed yield, found for plants grown under the conditions of low soil moisture, resulted from a lower pod density per plants as well as a lower number of seeds per plant.
    Źródło:
    Zeszyty Problemowe Postępów Nauk Rolniczych; 2006, 509; 125-131
    0084-5477
    Pojawia się w:
    Zeszyty Problemowe Postępów Nauk Rolniczych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wplyw zlokalizowanego stresu tlenowego w glebie na rozwoj korzeni i czesci nadziemnych kukurydzy [ modelowe badania rizotronowe ]
    Effect of localized soil oxygen stress on root and shoot development in maize ( a model rhizotrone study)
    Autorzy:
    Bennicelli, R P
    Powiązania:
    https://bibliotekanauki.pl/articles/1628361.pdf
    Data publikacji:
    1994
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    agrofizyka
    gleby
    kukurydza
    system korzeniowy
    wzrost roslin
    badania modelowe
    badania rizotronowe
    dynamika rozwoju
    powietrze glebowe
    aeracja
    stres tlenowy
    agrophysics
    soil
    maize
    root system
    plant growth
    model research
    development dynamics
    soil air
    aeration
    oxygen stress
    Opis:
    The aim of the study was to test the usefulness of split rhizotrone technique to investigate the effect of localized soil anoxia on root and shoot developement, using maize as a test plant. The experiment was performed in 6 split rhizotrons enabling differentiation of soil aeration status in each half of the rhizotron by blowing nitrogen or air through them. The rhizotrone consists of two parts (each 16.6 dm3 in volume) inclined with an angle 60°. Each part is constructed of 1 mm thick stainless steel plate with a glass inner wall for root observation and has dimensions 84 cm x 40.5 cm x 5.0 cm. The rhizotrons were filled in with a brown loess soil material (Eutric Camhisol) from Ap horizon (from Eli/6wka, near Lublin). Maize seedlings with the roots splitted between the rhizotrone halves (eukivars KLG 2210 and DEA) were used in the experiments. Until the stress period the soil moisture tension of 20-80 kPa provided good water and air conditions. At a stage of 8 leaves three treatments were applied for a period of 7 days; an oxic control (P/P), a localized anoxia with 50% of the roots in nitrogen treated part (P/A), and a complete anoxia (A/A) with gas nitrogen in both parts. During the stress period diurnal elongation rates of primary roots (by marking positions of the tips each day) as well as distribution of two indicators of soil oxygenation status with depth viz. of oxygen diffusion rate (ODR) and of redox potential (Eh) in soil were measured. Shoot elongation rates were monitored with a potentiometer attached to the youngest leaf. Microscopic photographs of cross- sections of the caps and of apical meristems of primary roots at 400 magnification were made to show the changes in their anatomy due to anoxia. Chemical analysis of the shoots was performed after the stress period. For each cultivar the experiment was repeated three times. The investigations performed allowed the following conclusions to be drown out: 1. The split rhizotrone was shown to be a useful technique to study behaviour of the primary maize roots under localized anoxia conditions. 2. The ODR and Eh distribution with depth showed deterioration of oxygenation status (drop of ODR from control values above 100 |µg m-2 s-1 to the level 30 µg m-2 s-1, decrease of Eh from control values above 550 mV to the level, 300 mV) due to replacement of the soil air with gaseous nitrogen. 3. Root elongation rates under anoxic conditions (both under complete - A/A, and localized - A/P anoxia) were on the level of about 50% of the controle (P/P) during first 4 days and decreased practically to zero by the end of the stress period. In turn, the oxic part of the rhizotrone combined with localized anoxia treatment of the same plant (P/A) exhibited compensation effect and was characterized by stimulation of the root elongation rate up to 80%. This effect was especially distinct after 2-5 days of the stress duration and then tended to decrease. 4Distribution of the root mass in depth under anoxic treatments was characterized by concentration of about 80% of the root mass within first 10 cm of the soil. 5.Microscopic photographs of the root tips showed, under anoxic conditions, shorter meristematic zone, smaller number of mitosis, beginning of aerenchyma formation and dying of the cells at a distance of 1 mm from the root cap. 6.The shoots responded to applying anoxia to both rhizotrone parts by 20% reduction of the growth rate. 7.Both root and shoot elongation rates were correlated also with the temperature. 8.Oxygen deficiency in soil resulted in an increase of exchangeable manganese, what was reflected by its increased concentration in the maize shoots.
    Źródło:
    Acta Agrophysica; 1994, 03; 3-72
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mycorrhizal status of Scots pine Pinus sylvestris L. seedlings grown in watered and non-watered nursery condition
    Autorzy:
    Hilszczanska, D
    Powiązania:
    https://bibliotekanauki.pl/articles/41009.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Scots pine zob.Scotch pine
    Scotch pine
    Pinus sylvestris
    mycorrhizal status
    watering effect
    plant growth
    plant development
    tree
    soil water potential
    moisture condition
    Opis:
    This study describes the effect of watering on the mycorrhizal development and growth of Scots pine seedlings in a bare root nursery. Seedlings of Scots pine, grown under nursery conditions on natural soil (loamy sand) and soil + litter, were subjected to two different watering regimes for five months. During this time, measurements of soil water potential were made. Seedlings grown in natural soil and subjected to drought conditions were of significantly greater shoot height and volume and they had one mycorrhizal morphotype more than watered seedlings. However, irrigated seedlings subjected to excessive watering possessed greater mycorrhizal colonization: 46% on natural soil and 72% on soil + litter, while non-irrigated seedlings had 36% and 67% levels of mycorrhizal colonization, respectively.
    Źródło:
    Dendrobiology; 2004, 52; 23-28
    1641-1307
    Pojawia się w:
    Dendrobiology
    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 1-5 z 5

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