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Wyszukujesz frazę "Myśkow, E." wg kryterium: Autor

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    Tytuł:
    Plant macrofossils from the Czyżów Complex deposits of the Szczerców outcrop, central Poland
    Autorzy:
    Myśkow, E.
    Krzyszkowski, D.
    Wachecka-Kotkowska, L.
    Wieczorek, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/184237.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    fluvial sediments
    plant macrofossils
    Holsteinian
    Czyżów Complex
    Central Poland
    Opis:
    The paper presents the results of research into the plant macrofossils found in the tectonic Kleszczów Graben, within Mesopleistocene sandy sediments. A number of samples were collected at eight locations from river sediments containing variously sized fragments of plants, mostly from greenish sands overlying Neogene sediments. The structural characteristics of the sediments show a cyclic record of the formation of point bars, their washing out at supercritical conditions, and their aggradation by fine-grained material during flow waning. Based on lithological and structural studies, it has been demonstrated that the sands accumulated in an environment of a meandering river, whose valley bottom was covered with fairly dense vegetation, inhibiting the influx of mineral material to the floodplain from the surroundings – the valley or glacial plateau slopes. The aim of further analysis was to identify the plant genera of the individual macrofossils (about 40 specimens). The most numerous macrofossils were observed in the middle layers of the profile, within sandy megaripple structures, where mostly fragments of Fraxinus and Acer wood were present. In other layers, several fragments of Pinus and three pieces of Populus wood were identified. Additionally, young stems of dicotyledonous plants and fragments of rhytidome (the outer bark of a tree) were found. The results are discussed in combination with considerations on the deposition of the Czyżów Complex in the Bełchatów outcrop, and on the occurrence of local flora.
    Źródło:
    Geology, Geophysics and Environment; 2016, 42, 3; 325-336
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rola śmierci komórek drewna w sukcesie ewolucyjnym roślin drzewiastych
    Contribution of wood cells death to evolutionary success of woody plants
    Autorzy:
    Tulik, M.
    Myśkow, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/989838.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    rosliny drzewiaste
    drewno
    komorki roslinne
    smierc komorki
    morfotypy
    apoptoza
    autoliza
    elementy trachealne
    parenchyma
    wlokno drzewne
    cewki
    tkanka miekiszowa
    autolysis
    cell death
    pcd
    ray parenchyma
    tracheary elements
    fibers
    wood differentiation
    Opis:
    The paper describes the different types of cell death during the process of wood cell formation and terminological variety found in the literature concerned. The cell death referred to as programmed cell death (PCD), is genetically controlled and fundamental for the correct function of the whole organism of woody plants. The wood is mainly composed of the tracheary elements fulfil as conductors of water, fibers that provide the mechanical support and parenchyma cells playing an important role in the storage of water and reserve materials. The PCD of these elements constitutes the final stage of their differentiation and it is proceeded by: (i) cambial cell divisions, (ii) the enlargement of the cambial derivatives. The successive phase concerns (iii) deposition of secondary cell walls and its lignification. After that, the cell commences to digest protoplast, what means that each cell participates in the process of its own demise actively. However, the time and the sequence of the appearance of these phases are distinct among the woody cells. In the case of the tracheary elements the digestion of the protoplast occurs immediately after the tonoplast breakdown. Therefore, these cells are short−lived elements of wood. The life span of the fibers and the parenchyma cells is longer (from month for fibers and years in case of parenchyma cells). For the latter cells the positional information (distance from the cambium) and vicinity with short−lived tracheary elements are considered to be important for undergoing the process of death.
    Źródło:
    Sylwan; 2015, 159, 05; 392-402
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wtórne tkanki okrywające u drzew leśnych
    Secondary protective tissue of forest trees
    Autorzy:
    Myśkow, E.
    Tulik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/990876.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    botanika lesna
    drzewa lesne
    tkanki wtorne
    tkanki okrywajace
    kora drzew
    korek naturalny
    peryderma
    przetchlinki
    cork wings
    lenticels
    periderm
    rhytidome
    forest trees
    Opis:
    This paper reviews the structure and formation of periderm and rhytidome in organs both of coniferous and broadleaves trees, in respect to their protective role. The periderm, which is composed of three tissues such as meristematic phellogen giving rise to suberized phellem at the outer side and phelloderm at the inner side. In older organs peridem is replaced with rhytidome composed of dead cells and included subsequent periderms separated by functioning phloem cells. Additionally, the structure and classification of lenticel as well as development of cork wings is described.
    Źródło:
    Sylwan; 2014, 158, 03; 192-202
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamics of the ray pattern in cambium of Diospyros lotus
    Autorzy:
    Myskow, E.
    Zagorska-Marek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/41766.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Opis:
    Cambial rays, give rise to phloem and xylem rays. This way they affect the efficiency of a radial conducting system in a tree. Both, frequency of rays and their arrangement on the expanding cambial surface must be precisely controlled during tree ontogeny. The main aim of this research was to analyse the changes in the ray arrangement of Diospyros lotus L. cambium during transition from its nonstoried to double–storied structure. In order to trace the history of cambial ray dynamics, the behaviour of wood rays was followed in successive annual rings. Special attention was paid to developmental events, such as initiation and elimination of rays as well as their splitting and uniting. Moreover, the additions and eliminations of ray cell initials at the both opposite ray margins were followed. The most evident was the initial split of high primary rays into the smaller parts and their subsequent separation concurrent with the increase in cambial girth during the first years of a tree ontogeny. Between the existing rays new secondary rays were initiated by segmentation of fusiform initials. These all developmental events led to the formation of a double-storied pattern. In addition, the recurrent uniting and splitting of rays indicated their permanent rearrangement and the dynamic maintenance of a general pattern. The presented data are discussed in light of the processes occurring in cambial rays that lead to the storied pattern formation, which in turn may affect the mechanical properties of the wood.
    Źródło:
    Dendrobiology; 2013, 69
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ontogenetic development of storied ray pattern in cambium of Hippophae rhamnoides L.
    Autorzy:
    Myskow, E
    Zagorska-Marek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/58338.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    storied ray
    cambium
    plant development
    storied pattern
    Hippophae rhamnoides
    morphology
    ray
    Opis:
    Storied pattern, in the arrangement of both fusiform initials and the rays in cambium of Hippophae rhamnoides, develops in ontogeny relatively quickly and becomes clearly visible in terminal parenchyma of third and fourth annual ring. At first, anticlinal longitudinal divisions and restricted intrusive growth of fusiform initials lead to the formation of their characteristic horizontal tiers. Then, initiation of secondary rays, taking place rather within such tiers, not between them, makes possible the formation of storied ray pattern. New secondary rays originate most frequently from fusiform initials by their segmentation. This makes the appearance of ray tiers rather quick. However, the high order in the structure of cambium of Hippophae rhamnoides is also due to another, very curious and not known until now mechanism. It operates through limited in its range, thus highly controlled, vertical migration of rays on the cambial surface. This applies to asymmetrically positioned rays either primary, which are often originally sited "out of order" or secondary, initiated off-centre within the existing tiers. Excessively asymmetric rays, lying accidentally on the border between two neighbouring storeys, often undergo splitting and then the derivative rays move toward the centres of the storeys. Ray displacement is due to elimination of one or two of ray initial cells on one edge of the ray and simultaneous, multiple divisions adding new ray cells on the opposite edge.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2004, 73, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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