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    Wyświetlanie 1-5 z 5
    Tytuł:
    The impact of air pollution on growth features and the health of trees in Berlin
    Autorzy:
    Pietras-Couffignal, K.
    Robakowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2077709.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Acer
    Aesculus
    Tilia
    Platanus
    city trees
    urban conditions
    Opis:
    This study examined the impact of air pollution, and more specifically the impact of traffic, on the health of urban trees. Due to the lack of data sets, urban tree growth modeling often relies on the existing knowledge of forest. However, urban trees differ from forest trees. One of the aims of the study is to fill the lacunae in this field. It was hypothesized that in streets with higher traffic volume, both growth parameters and health status of trees would be decreased in comparison to trees growing in streets with lower traffic volume. Four of the most common tree species growing in Berlin were selected: Tilia cordata Mill., Acer platanoides L., Platanus acerifolia (Aiton) Willd., and Aesculus hippocastanum L. Apart from the tree age and stand position (high and low traffic volume), the height and circumference were measured and the following traits were analyzed: trunk condition, crown defoliation, leaf discoloration, the presence of hollows and nests. The streets that were selected for the analysis were located in the center of Berlin. For each species, four streets with high traffic volume and four streets with low traffic volume were chosen. The car traffic volume had a significant impact on growth parameters. Significant differences in height and circumference between trees growing on streets with low or high traffic volume were noticed; the higher the traffic volume, the lower the tree height and circumference. This tendency is particularly visible in P. acerifolia, T. cordata and A. platanoides. This relation was observed in all species except for A. hippocastanum. In the conditions of high-traffic volume, A. platanoides is thriving revealing the smallest differences in vitali- ty and condition of the crown, trunk and leaves. The greatest differences in the health condition of the trees among the analyzed variants of traffic intensity were observed in the case of T. cordata. Lime trees seem to be most suitable for planting in the streets with lower traffic volume, whereas A. platanoides seems most suitable for planting in the streets with high traffic volume. P. acerifolia, despite its generally good health, is suffering from several progressing diseases. It is worth considering whether it should be gradually replaced with more resistant species. Aesculus, especially A. hippocastanum, are currently the most endangered ones. An alternative to this species can be A. carnea.
    Źródło:
    Dendrobiology; 2019, 82; 52-65
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sensitivity of Tilia cordata seeds to dehydration and temperature of liquid nitrogen
    Autorzy:
    Chmielarz, P
    Powiązania:
    https://bibliotekanauki.pl/articles/41625.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    dehydration
    drying
    liquid nitrogen
    temperature
    Tilia cordata
    forest habitat
    sensitivity
    scarification
    cryopreservation
    seed
    Opis:
    The aim of the study was to assess the susceptibility of small-leaved lime (Tilia cordata Mill.) seeds to drying and freezing in liquid nitrogen (-196°C). Seed samples were frozen in liquid nitrogen for 24 h at 11 different levels of seed moisture content (m.c.), ranging from 3.1% to 22.8% (fresh weight basis). All samples, including unfrozen control samples, were subjected to scarification with concentrated sulphuric acid (Tylkowski 1998) either before or after freezing. Seed pre-treatment before germination (at 3~15°C/16~8h) involved cold stratification at 3°C without substrate. Seed drying to 3.1% m.c. significantly reduced their germinability (to 63%), as compared to the high germinability (82-88%) of seeds with 5.2-20.9% m.c. Thus seeds of this species can be assigned to the ‘suborthodox' category. Such a high germinability (79-87%) was preserved after freezing in liquid nitrogen in samples dried to 9.0-17.4% m.c. if scarification was performed before freezing, and in samples dried to 9.1-16.2% m.c. if scarification was performed after freezing. The highest percentage of seedlings emerged after freezing in liquid nitrogen from seeds dried to 11.1-20.1% m.c. (emergence 65-75%) if scarification was performed before freezing, and from seeds dried to 7.3-17.8% m.c. (emergence 53%-71%) if scarification was performed after freezing.
    Źródło:
    Dendrobiology; 2002, 47 Supplement
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of salt stress on prenol lipids in the leaves of Tilia 'Euchlora'
    Autorzy:
    Baczewska, A.H.
    Dmuchowski, W.
    Jozwiak, A.
    Gozdowski, D.
    Bragoszewska, P.
    Dabrowski, P.
    Swiezewska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/41706.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    salt stress
    plant stress
    polyprenol
    leaf
    Tilia
    urban tree
    linden zob.lime
    lime
    Opis:
    Soil contamination caused by the NaCl used to de-ice slippery roads in winter is now recognized as one of the major causes of nutrient disorders and death in urban trees. It is believed that polyisoprenoids may have a specific role in the adaptation of plants to adverse conditions and habitats; it is further believed that in the cell, they may exhibit a protective effect in response to biotic and abiotic stress. The aim of this study was to evaluate the effect of salt stress on the content of prenol lipids in the leaves of Crimean linden (Tilia ‘Euchlora’). The Cl content in the slightly damaged (“healthy”) leaves averaged 0.96%, while that in the heavily damaged (“sick”) leaves averaged 2.02%. The leaves of control trees contained on average 0.57% Cl. The Na contents in the healthy and damaged leaves were 208 mg/kg and 1038 mg/kg, respectively, and the Na content in the control areas was 63 mg/kg. A mixture of polyprenols consisting of four compounds, prenol-9, prenol-10, prenol-11 and prenol-12, was identified in the leaves of Crimean linden. This mixture was dominated by prenol-10 (2.16–6.90 mg/g). The polyprenol content was highest in the leaves of “healthy” trees (approximately 13.31 mg/g), was lower in the case of “sick” trees (approximately 9.18 mg/g), and was the lowest in the control trees (mean 4.71 mg/g). No changes were observed in the composition of the mixture of polyprenols under these conditions. The results suggest that polyprenols may affect the accumulation of Cl in leaves. This phenomenon is evidenced by the high content of prenols in the leaves of trees considered “healthy” but growing under conditions of increased soil salinity and the lower content of prenols in the leaves of the “sick” and control trees. It is advisable to further investigate the role of prenol lipids in the leaves of trees subjected to salt stress
    Źródło:
    Dendrobiology; 2014, 72
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of dormancy breaking in stored seeds on germinability and seedling emergence of Tilia platyphyllos
    Autorzy:
    Tylkowski, T
    Powiązania:
    https://bibliotekanauki.pl/articles/41170.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    dormancy breaking
    seed
    stored seed
    germinability
    seedling emergence
    Tilia platyphyllos
    scarification
    stratification
    seed viability
    Opis:
    Fruits of large-leaved lime dried to 10% may be stored for 16 years in sealed containers at –3°C without loosing seed viability. Dormancy of seeds, extracted from hard fruit coats, may be released after chemical scarification in concentrated sulphuric acid for 10 minutes, followed-by stratification without any medium (chilling) at the temperature of 3°C, for 20–24 weeks, i.e. until the first seeds start to germinate. After such pretreatment, during the germination test conducted at alternating temperatures 3~15°C (16 + 8 hours/day) seeds germinate near 90% in several weeks. For seedling production scarified and stratified seeds should be sown in early spring into trays under a plastic tunnel which ensures a high percentage of seedlings emergence. Sowing of the pretreated seeds in spring in a open nursery gives poor results.
    Źródło:
    Dendrobiology; 2006, 56; 79-84
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A contribution to the systematics of the genus Tilia with respect to some hybrids by RAPD analysis
    Autorzy:
    Liesebach, H
    Sinko, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/41216.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Tilia
    linden
    taxonomy
    hybrid
    DNA
    UPGMA method
    systematics
    random amplified polymorphic DNA
    Szent Istvan tree
    K3 tree
    cluster analysis
    Opis:
    The putative hybrid character of two Tilia varieties selected as avenue trees (‘Szent Istvan’ and‘K3’) should be clarified for further breeding activities. Their ancestor species should be identified by a genetic comparison with reference material (Tilia cordata, T. platyphyllos, T. dasystyla, T. × euchlora, T. × europaea and others). RAPD marker data were evaluated by UPGMA cluster and neighbour-joining analysis. The genetic comparison of the two selected clones with the collection of reference material offers insights into some systematic relationships within the genus Tilia. It was supplemented by a critical discussion of methods of RAPD data evaluation for taxonomic purposes.
    Źródło:
    Dendrobiology; 2008, 59; 13-22
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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