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    Wyświetlanie 1-3 z 3
    Tytuł:
    Genetic diversity of F1 and F2 interspecific hybrids between dwarf birch (Betula nana L.) and Himalayan birch (B. utilis var. jacquemontii (Spach) Winkl. 'Doorenbos') using RAPD-PCR markers and ploidy analysis
    Autorzy:
    Czernicka, Małgorzata
    Pławiak, Jarosław
    Muras, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/1039274.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    Betula nana
    Betula utilis 'Doorenbos'
    interspecific hybrids
    ploidy analysis
    RAPD-PCR
    Opis:
    Crosses between Betula nana and B. utilis 'Doorenbos' were undertaken in order to obtain interspecific hybrids which could be characterized by wide spreading stems, strong branching habit, decorative clear white bark and an interesting shape of purple leaves. The research purpose was to examine genetic diversity of the 16 F1 and F2 putative progenies by using the RAPD-PCR method and the ploidy analysis. A total of 242 RAPD markers were scored with 24 primers and 220 (90.9%) polymorphic bands were found. In the NJ dendrogram, cluster I consisted of the female parent - B. nana and 12 hybrids and cluster II grouped the male parent - B. utilis 'Doorenbos' with 4 hybrids (F2/2, F1/8, F1/7 and F2/1). The 2-D scaling by PCoA was in agreement with the similarity index, i.e. two hybrids (F1/8, F2/2) grouped with the male parent while others with female parent. Classification of the hybrid plants by chromosome counting demonstrated that 13 hybrids were confirmed with accurate chromosome counts as being diploid (2n=2x=28) and 3 plants (F1/7, F1/8, F2/2) as triploid with 42 chromosomes.
    Źródło:
    Acta Biochimica Polonica; 2014, 61, 2; 195-199
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calculated characters of leaves are independent on environmental conditions in Salix herbacea (Salicaceae) and Betula nana (Betulaceae)
    Autorzy:
    Marcysiak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/59279.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    leaf
    environment condition
    Salix herbacea
    Salicaceae
    Betula nana
    Betulaceae
    morphological character
    synthetic character
    plant population
    Opis:
    The goal of the study was to check if the shape-describing characters, calculated as ratios of the morphological measured traits are more stable, compared to the latter, and can be treated as independent on environmental conditions. The test was based on the example of leaves of Salix herbacea and Betula nana. The individuals of the two populations of S. herbacea from Tatra Mts. were divided into two groups: with bigger and smaller leaves. The two populations of B. nana came from different substrata: the first one, collected from the mire on the lower altitude, had bigger leaves, and the second, collected from the granite plateau and higher altitude, had smaller leaves. For both species, the measured traits were generally more variable than the ratios calculated on their basis, as expressed by the variation coefficients. The results of Students' t-test analyses showed statistically significant differences between the two groups of S. herbacea and the two populations of B. nana with respect to almost all the measured characters, and no such differences for the calculated traits, reflecting the leaf shape. As the differentiation of the leaf size was probably bound to the environmental factors, the lack of the dependence of the leaf shape on the leaf size could lead to a conclusion of independence of the leaf shape on the environment conditions.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2012, 81, 3
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic diversity of postglacial relict shrub Betula nana revealed by RAPD analysis
    Autorzy:
    Dabrowska, G
    Dzialuk, A.
    Burnicka, O.
    Ejankowski, W.
    Gugnacka-Fiedor, W.
    Goc, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/41579.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Betula nana
    genetic diversity
    genetic resource
    conservation
    population genetics
    postglacial relict shrub
    random amplified polymorphic DNA
    Opis:
    A sample of Betula nana from the Linie reserve near Dąbrowa Chełmińska, have been fingerprinted using random amplified polymorphic DNA (RAPD). The high level of genetic variation was detected. All individuals had unique genotypes, supporting the generally high resolving power of RAPD’s. For the conservation strategy, information about the distribution of the genetic variation within and among populations plays very important role. Thus, extensive study in other populations of dwarf birch is needed.
    Źródło:
    Dendrobiology; 2006, 55; 19-23
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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