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    Wyświetlanie 1-4 z 4
    Tytuł:
    The variability of dimensions of Quercus robur L. and Quercus petraea (Matt.) Liebl. acorns in Poland
    Autorzy:
    Barzdajn, W
    Powiązania:
    https://bibliotekanauki.pl/articles/41726.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    variability
    acorn size
    dimension
    Polska
    acorn
    forest tree
    Quercus robur
    Quercus petraea
    Opis:
    The paper includes results of measurements of the length and diameter of 12600 acorns of Quercus robur and 5099 acorns of Q. petraea collected in Poland in the mast-year 1993. Acorns of both species were compared. Significant differences in acorn length and diameter/length ratio were found. Acorns of Q. robur are somewhat larger, but both species have a large common area of variability. The scale of this variability has been determined. Geographical correlation of the size of Q. robur acorns was ascertained.
    Źródło:
    Dendrobiology; 2002, 47 Supplement
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of the natural resources of European silver fir (Abies alba Mill.) in the Polish Sudety Mts.
    Autorzy:
    Filipiak, M
    Barzdajn, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/41000.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Sudetes Mountains
    Polska
    natural resource
    European silver fir
    Abies alba
    locality number
    tree number
    distribution
    restitution
    protection strategy
    Opis:
    Data from floristic publications, forest management records, comprehensive questionnaires and original field research were used to assess the silver fir resources in the Sudety Mts. Fir trees older than 50 years were recorded in over 2000 localities but the mean number of individuals per locality was only about 15. The generally low number of fir trees and their considerable dispersion are the major causes of the poor reproduction of the studied species in the Sudety Mts. In that region, silver fir should receive special treatment and, if possible, excluded from logging plans. Current and projected activities concerned with fir protection are described briefly.
    Źródło:
    Dendrobiology; 2004, 51; 19-24
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The morphological traits of cones and seeds of Abies alba in the Middle Sudeten
    Autorzy:
    Tracz, M
    Barzdajn, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/41449.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    fir
    Abies alba
    cone
    seed
    morphological trait
    cone variability
    Sudetes Mountains
    cone size
    seed feature
    Opis:
    Twenty Abies alba trees were selected for restoration purpose of species in the Sudeten. Eleven features of cone and seeds collected from those trees were examined and all of them significantly differed selected trees. Five features, i.e. cone length, cone biggest diameter, length and width of ovuliferous scales, and length of wings with were recommended as having the highest diagnostic value.
    Źródło:
    Dendrobiology; 2007, 58; 59-65
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variation in growth and survival among European provenances of Pinus sylvestris in a 30-year-old experiment
    Autorzy:
    Barzdajn, W.
    Kowalkowski, W.
    Chmura, D.J.
    Powiązania:
    https://bibliotekanauki.pl/articles/41160.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    plant growth
    survival
    provenance transfer
    provenance trial
    forest tree
    Scotch pine
    Pinus sylvestris
    variation
    long-term experiment
    productivity
    Opis:
    Provenance trials with forest trees provide valuable information about growth and adaptability of populations often transferred over large geographical and climatic distances. In this study we evaluated growth and survival of 19 Scots pine (Pinus sylvestris L.) populations representing most of the natural range of the species in Europe, growing in a 30-year-old provenance trial in the northeastern Poland. We used cluster analysis to investigate differentiation among those populations in growth and survival. We also used published data on needle morphology and allozyme and DNA marker variation for those same populations to compare groupings of populations based on growth and needle traits and markers. We found significant variation among tested populations in all investigated traits – the largest variation was found for stand volume which integrates information on growth and survival. Variation in growth traits was related to the latitude of population origin with populations from the latitudinal band between 49° N and 54° N showing the best performance. Populations originating from both north and south off of that region showed lower productivity, which for southern provenances resulted from their particularly low survival, reflecting the lack of adaptation to the environment of the research site. Grouping of populations based on growth traits revealed three clusters corresponding to the three latitudinal regions – northern, central and southern. Needle morphological traits were not appropriate as markers of productivity. Clustering of populations based on needle morphology, and especially based on biochemical and molecular markers, did not correspond to the grouping based on growth traits.
    Źródło:
    Dendrobiology; 2016, 75
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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