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Wyszukujesz frazę "spruce" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Somatic embryogenesis of selected coniferous tree species of the genera Picea, Abies and Larix
    Autorzy:
    Szczygiel, K
    Hazubska-Przybyl, T.
    Bojarczuk, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/57833.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Abies
    micropropagation
    ex vitro
    development
    larch
    tree species
    spruce
    in vitro
    botany
    Picea
    medium
    embryogenesis
    Larix
    fir
    hormone
    Opis:
    Experiments on somatic embryogenesis in selected spruce, fir and larch species were performed to determine if this method of micropropagation enables production of quality seedlings for forest nurseries. High frequencies of embryogenic callus in spruce (23-31%) and fir (29%) were achieved when mature zygotic embryos were used as explants, while in larches (36%) only when megagametophytes (endosperms with immature embryos) were used. The possibility of somatic embryogenesis initiation also from somatic embryos (resulting in secondary and third generation of embryogenic callus) indicate high efficiency of this method of micropropagation. The best results at all stages of somatic embryogenesis (good proliferation of embryogenic callus, high rate of embryo regeneration and their survival) were obtained for Norway spruce, European larch and some hybrid larches.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2007, 76, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structure of embryogenic tissues and accumulation of storage materials in somatic embryos of Picea abies and P. omorika
    Autorzy:
    Hazubska-Przybyl, T
    Bojarczuk, K.
    Guzicka, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41109.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Picea abies
    Picea omorica
    tissue
    spruce
    development
    starch grain
    lipid body
    embryogenic tissue
    storage material
    somatic embryo
    plant tissue
    Opis:
    Microscopic analysis of embryogenic tissues of Picea abies and P. omorika showed that the tissues differed in proportions of various types of proembryogenic masses, and in presence/absence of early somatic embryos, which suggests that they differed in embryogenic potential. On the basis of this study, embryogenic competence of tissues can be assessed at early stages of somatic embryogenesis, and thus the most efficient lines can be selected (one Picea abies and two P. omorika). In the course of development of somatic embryos embryogenic tissue was placed on a medium with abscisic acid (ABA), which affects an increase in osmotic pressure at the stage of maturation of somatic embryos and finally on the regeneration of cotyledonary embryos. In this stage of embryos development, storage materials were accumulated, which are used in specific metabolic processes during embryo development.
    Źródło:
    Dendrobiology; 2008, 60; 19-28
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Somatic embryogenesis of selected spruce species [Picea abies, P. omorika, P. pungens 'Glauca' and P. breweriana]
    Autorzy:
    Hazubska-Przybyl, T
    Bojarczuk, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/56682.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    somatic embryogenesis
    spruce species
    Picea abies
    Picea omorika
    Picea pungens
    Picea breweriana
    plant tissue
    growth regulator
    somatic embryo
    nursery production
    Opis:
    Somatic embryogenesis was studied in four spruce species (Picea abies, P. omorika, P. pungens 'Glauca' and P. brewenana) to determine if this method can be used for in vitro propagation of coniferous trees. The highest frequency of initiation of embryogenic tissue was obtained when mature zygotic embryos were used as explants. It ranged then from 10.8% (P. brewenana) to 23.75% (P. omorika and P. pungens 'Glauca'). The frequency of embryogenic tissue initiation was strongly affected by medium composition, i.e. addition of appropriate auxins (2,4-D, NAA, Picloram) and sucrose concentration (10-20 g-1"1). A lower frequency was obtained in Picea omorika (10%) when megagametophytes (endosperms with immature zygotic embryos) were used as explants. No emryogenic tissue was produced from hypocotyls, cotyledons and needles. A satisfactory frequency was achieved with the use of somatic embryos of Picea abies (30%). The proliferation of embryogenic cell lines of spruces was affected by medium type. The experiments resulted in production of somatic plantlets of P. abies and P. omorika. This enables the application of this method of spruce micropropagation for genetic and breeding research or for nursery production.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2008, 77, 3; 189-199
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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