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    Wyświetlanie 1-6 z 6
    Tytuł:
    Zmienność wiosennej fenologii polskich i litewskich pochodzeń brzozy brodawkowatej (Betula pendula Roth.)
    Variability of Polish and Lithuanian birch provenances (Betula pendula Roth.) in the spring phenology
    Autorzy:
    Wojda, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/973606.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    brzoza brodawkowata
    proweniencje
    Betula pendula
    fenologia
    zmienność wewnątrzgatunkowa
    leśnictwo
    drzewa leśne
    phenology
    flushing
    provenance variation
    (Betula pendula Roth.)
    Opis:
    The aim of this study was to estimate differences in the time of flushing among 16 provenances of birch (Betula pendula Roth.) from Poland (12) and Lithuania (4). Using a six−stage scale budburst and leaf elongation were assessed during three springs (2001−2003). Analysis of variance showed significant differences between provenances both in sites and years. Provenances Augustów, Strzelce and Chełm flush early. Late flushers are birch from Golub and Głusko. Longitude had the most important influence on flushing; more eastern provenances tending to flush earlier. Heritability of budburst and leaf elongation varied from 0,53 to 0,97.
    Źródło:
    Sylwan; 2004, 143, 08; 52-60
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmienność cech morfologicznych liści brzozy brodawkowatej (Betula pendula Roth) w Polsce
    Leaf morphology in Polish populations of silver birch [Betula pendula Roth]
    Autorzy:
    Wojda, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/973201.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    brzoza brodawkowata
    rody hodowlane
    proweniencje
    Betula pendula
    cechy morfologiczne
    zmienność cech
    liście
    leśnictwo
    drzewa leśne
    leaf morphology
    leaf shape
    silver birch
    Opis:
    Variation in leaf morphology in 9 populations of the silver birch in Poland was investigated. 11 measurements were made on each leaf. Leaf width and length as well as perimeter and area were positively correlated with petiole length. There was also strong positive relationship between perimeter, width and area. Analysis of variance showed significant differences between provenances in most of features of leaf. Provenances Browsk, Chełm, Siedlce were the most similar to each other. Leaves from Augustów had the biggest length but their petiole length, perimeter and area were the smallest
    Źródło:
    Sylwan; 2007, 151, 03; 3-10
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamika metabolizmu oddechowego gleb wybranych stanowisk parku dendrologicznego SGGW
    Dynamics of soil respiration in urban environment of Warsaw
    Autorzy:
    Wojda, T.
    Tracz, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/1026704.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    gleby
    gleboznawstwo
    oddychanie
    metabolizm gleb
    dynamika metabolizmu
    Park Dendrologiczny SGGW
    lesnictwo
    soil respiration
    infra red gas analysis (irga)
    soil co&sub2. efflux measurement
    diffusion of soil co&sub2.
    biological activity of soil
    Opis:
    The objective of the study was to determine the soil respiration dynamics in the urban dendrology park of the Warsaw Agricultural University. Soil respiration was measured in the ten−day cycles in spring, summer, autumn and winter in three selected environments (so−called: path, grassland and herbaceous layer) differing in the degradation level caused by man and in vegetation ground cover. The soil carbon dioxide efflux in these three environments was measured at the soil surface and at a depth of 10 cm following soil exposure. The diffusion of soil carbon dioxide was also measured using an infrared gas analysis (IRGA), as well as air and soil temperatures at both depths, bulk density of soil, dry soil weight and actual humidity.
    Źródło:
    Sylwan; 2003, 147, 05; 21-27
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wyniki 35-letniego doświadczenia proweniencyjnego z sosną zwyczajną z serii IUFRO 1982 na powierzchniach w Wyszkowie i Sękocinie
    Result of the 35 years provenance experiment with Scots pine from the IUFRO 1982 series on the trials in Wyszkow and Sekocin
    Autorzy:
    Kowalczyk, J.
    Wojda, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/980212.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    doswiadczenia proweniencyjne
    IUFRO
    provenace variability
    iufro 1982 trail
    forest tree breeding
    Opis:
    Scots pine is the main forest tree species in Poland. In this study we investigated variation in growth among 20 populations at two common−garden sites of the IUFRO 1982 provenance experimental series after 35 years of growth. The sites managed by the Forest Research Institute are located in Wyszków and Sękocin (central Poland). Populations show great diversity in the productivity and stem straightness depending on the geographical origin. The character of variability confirms the results obtained on other experimental plots established within the IUFRO 1982 series. In terms of growth, populations such as: Pornóapáti, Ardennes, Haguenau, Neuhaus as well as Miłomłyn, Rychtal and Bolewice are the best. Populations from the south of Europe grow in Polish conditions very poorly and have a low survival rate. Some of the well−growing populations (Ardennes, Pornóapáti and Haguenau) probably comes from selected stands or seed orchard. Stabilization of ranging for the best and worst populations can be observed after 15 years of growth (fig. 1). It follows that in growing experiments, conclusions about the breeding value can be drawn after 15 years. Polish populations such as Miłomłyn, Rychtal and Bolewice are growing very well and can be the basis for further selection work. Obtained results can be used for future breeding, forest genetic resources conservation and also for the other research like dendrochronology and better estimation of the seed transfer rules of forest reproductive material.
    Źródło:
    Sylwan; 2019, 163, 07; 584-589
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Proweniencyjno-rodowa zmienność terminu wiosennego rozwoju pąków brzozy brodawkowatej (Betula pendula Roth)
    Provenance-family variation in the time of spring bud development in silver birch (Betula pendula Roth)
    Autorzy:
    Wojda, T.
    Niemczyk, M.
    Kowalczyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/994522.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    fenologia
    drzewa
    brzoza brodawkowata
    Betula pendula
    paki lisciowe
    rozwoj pakow
    rozwoj wiosenny
    proweniencje
    rody hodowlane
    bud development time
    provenance
    family
    heritability
    Opis:
    The aim of this study was to assess the variation of bud development time of the Polish and Latvian silver birch provenances and its impact on tree growth in the juvenile phase. The assessment of bud development was carried out in 2008 and 2009 on three experimental plots with ten Polish and three Latvian provenances using a six−point scale. Browsk, Augustów and Latvian provenances are in the group of provenances that develop early buds, while the provenances from Łobez, Młynary and Golub develop late buds. The spring development of silver birch buds shows a clinal variation depending on the longitude. The spring leaf development of the eastern provenances begins earlier than the western ones. The dependence of growth traits on the time of bud development has not been sufficiently proven and requires further research.
    Źródło:
    Sylwan; 2012, 156, 03; 197-207
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przydatność hodowlana wybranych odmian topoli w plantacjach energetycznych o krótkim cyklu produkcji
    Silvicultural potential of selected poplar cultivars growing on short rotation plantations
    Autorzy:
    Niemczyk, M.
    Wojda, T.
    Kantorowicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/989267.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    topola
    uprawa plantacyjna
    plantacje roslin energetycznych
    surowce energetyczne
    biomasa
    topola sekcji Aigeiros
    topola sekcji Tacamahaca
    przydatnosc hodowlana
    poplar
    energy plantation
    short rotation coppice
    biomass
    Opis:
    The use of biomass for energy purposes is an important European Union policy. In light of the restrictions concerning the use of the full−value wood from forests for energy purposes, short rotation forestry can become an alternative source of woody biomass. In this context, the most promising species is poplar (Populus spp.), productivity of which depends on various aspects such as plant spacing, cutting cycles, fertilization and cultivar characteristics. The aim of this study was to assess the possibility of cultivation of ten selected poplar clones from the section Aigeiros and Tacamahaca in short−rotation coppice in the climatic conditions of Poland. An experiment was set up in the north−eastern part of Poland in the Wichrowo Forest District. Survival, tree stocking, and biomass yield were compared. Productivity of clones was examined in five−year cutting cycle. The highest dry biomass yield (7.8 t/ha/yr) was achieved by the clone 'Hybrida 275'. In contrary, the biomass yield of the worst clone ('AF−8') amounted to 2 t/ha/yr. Some other Italian clones, such as 'AF−6' and 'MON' were not able to adapt to the local conditions at all and were excluded from the experiment. Because of the need to implement the full economic analysis of short rotation poplar plantations, it would be important to study propagation ability of certain currently studied varieties of poplar in subsequent rotations and with different production cycle period length up to the end of biomass production on a given plantation. Resistance to diseases of energy poplar plantations should also be researched.
    Źródło:
    Sylwan; 2016, 160, 04; 292-298
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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