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    Wyświetlanie 1-3 z 3
    Tytuł:
    Rhizogenesis and gas exchange in dogwood stem cuttings as affected by two biostimulators
    Autorzy:
    Pacholczak, A.
    Pietkiewicz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/41082.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    rhizogenesis
    gas exchange
    dogwood
    Cornus alba
    stem cutting
    biostimulator
    leafy shrub
    rooting
    auxin
    respiration
    photosynthesis
    transpiration
    Opis:
    The UE-imposed restrictions on the manufacture and use of plant protection chemicals necessitate screening for new substances that are more environmentally friendly. Biopreparations may constitute such a group; therefore, studies on their efficiency in the production of plant material are needed. This study evaluated the effects of two biostimulators on rhizogenesis and the gas exchange rate (respiration, photosynthesis, transpiration) of stem cuttings of dogwood (Cornus alba) as compared to conventional treatments with a rooting powder containing 2% auxin IBA and with aqueous IBA solution. Both biopreparations enhanced rhizogenesis; their efficiency varied depending on the cultivar, biostimulator applied, and the number of treatments. There was no relationship between rhizogenesis and physiological parameters tested. The experiments demonstrated that at least some biopreparations have potential in commercial production but their effectiveness may be different in different species and under different conditions.
    Źródło:
    Dendrobiology; 2014, 72
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photosynthetic rates and water use efficiencies in three climber species grown in different exposures at urban and suburban sites
    Autorzy:
    Borowski, J
    Loboda, T.
    Pietkiewicz, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/41208.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    suburban area
    urban area
    climber species
    Fallopia aubertii
    Hedera helix
    Vitis riparia
    Warsaw city
    photosynthetic intensity
    city centre
    Opis:
    Water Use Efficiency and photosynthetic rate of Fallopia aubertii (L. Henry) Holub., Hedera helix L. and Vitis riparia Michx. grown in various exposures in two site variants: Warsaw city centre vs. suburbs wereanalysed. All studied climbers showed similar photosynthetic intensity in both sites. The strongest effect of the exposition was found for F. aubertii, followed by V. riparia, and shade tolerant H. helix. WUE of studied climbers was relatively low, higher in suburbs than in the centre, due to lower adaptation to different sites. TheWUE of the climbers depended on exposure and the highest scores were obtained for sunny southern and western walls, while the lowest in northern ones. Intrinsic water use efficiency of the studied climbers was higher in the city centre than in the suburbs.
    Źródło:
    Dendrobiology; 2009, 62; 55-61
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photosynthetic apparatus efficiency of eight tree taxa as an indicator of their tolerance to urban environments
    Autorzy:
    Swoczyna, T.
    Kalaji, H.M.
    Pietkiewicz, S.
    Borowski, J.
    Zaras-Januszkiewicz, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/41510.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Opis:
    Urban trees, especially those growing in close proximity to roads, suffer from different kinds of stress. Most of roadside stress factors are impossible to be avoided therefore the selection of tolerant tree species andcultivars is of high importance. In our research we usedthe activity of photosystem II andchlorophyll relative content to monitor physiological state of 8 species andcultivars growing in urban environments in Warsaw. We comparedyoung trees growing 2–3 m away from the roadandothers growing minimum 8 meters away. The experiment allowed us to indicate the most tolerant taxa to roadside conditions: Gleditsia triacanthos, Pyrus calleryana ‘Chanticleer’, Platanus ×hispanica ‘Acerifolia’ and Acer campestre. We foundthat Quercus rubra is relatively tolerant. Tilia ×europaea ‘Pallida’, Tilia cordata ‘Greenspire’ and Ginkgo biloba should not be planted in harmful habitats.
    Źródło:
    Dendrobiology; 2010, 63
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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