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    Wyświetlanie 1-5 z 5
    Tytuł:
    Charakterystyka genetyczna świerka Schrenka (Picea schrenkiana) w gradiencie wysokościowym i geograficznym gór Tien-Szan w Kirgistanie
    Genetic characteristic of Schrenk spruce (Picea schrenkiana) in the altitudal and geographical gradient in Kyrgyz part of Tien-Shan mountains
    Autorzy:
    Magnuszewski, M.
    Nowakowska, J.A.
    Zasada, M.
    Orozumbekov, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/991108.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Kirgistan
    drzewa lesne
    swierk Schrenka
    Picea schrenkiana
    zmiennosc genetyczna
    polimorfizm DNA
    markery SSR
    zroznicowanie genetyczne
    ssr markers
    genetic differentiation
    genetic distance
    picea schrenkiana
    Opis:
    The study showed the genetic structure of nine Schrenk spruce stands, which represented altitude and geographical variants in the Tien−Shan mountains in Kyrgyzstan. Comparison between genetic structure of stands was based on frequencies of nuclear microsatellite (SSR) alleles occurring in three DNA loci. The total genetic differentiation of Schrenk spruce populations was low (FST=0.0651). Eight main groups of populations were distinguished in the dendrogram defined by Nei's genetic distances based on microsatellite markers.
    Źródło:
    Sylwan; 2014, 158, 05; 361-369
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zróżnicowanie genetyczne czereśni ptasiej (Prunus avium L.) w Polsce
    Genetic diversity of wild cherry (Prunus avium L.) in Poland
    Autorzy:
    Szyp-Borowska, I.
    Zawadzka, A.
    Zajaczkowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/972788.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    czeresnia ptasia
    Prunus avium
    zroznicowanie genetyczne
    metody badan
    metoda RFLP
    markery mikrosatelitarne
    wild populations
    cpDNA and SSR diversity
    Prunus avium L.
    Opis:
    The purpose of our study was to estimate genetic diversity of Prunus avium in natural populations. Genetic studies were carried out in 27 wild cherry populations sampled from several Polish tree stands. Chloroplast DNA variation was assessed and two haplotypes were identified. Theirs distribution divided populations into two groups. Haplotype H1 was present in 11 of 27 populations and H2 in 16 populations. The PCR− −SSR technique was used to detect nuclear DNA diversity. Three highly polymorphic SSR (microsatellite) primer pairs were used to describe the genetic variation. Heterozygosity values ranged from 0.500 to 0.633, while gene diversity (PIC) from 0.75 to 0.79. This study demonstrated that SSR fingerprinting with cpDNA diversity, can be used for preliminary characterization of Prunus avium populations.
    Źródło:
    Sylwan; 2012, 156, 07; 502-510
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Określenie pochodzenia wyłączonych drzewostanów nasiennych sosny rychtalskiej (Pinus sylvestris L.) z wykorzystaniem markerów mikrosatelitarnych
    Determination of the origin of the rychtal Scots pine (Pinus sylvestris L.) seed tree stands using microsatellite markers
    Autorzy:
    Wójkiewicz, B.
    Żukowska, W.B.
    Urbaniak, L.
    Kowalczyk, J.
    Litkowiec, M.
    Lewandowski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/985719.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    sosna zwyczajna
    Pinus sylvestris
    sosna rychtalska
    drzewostany nasienne
    pochodzenie roslin
    zmiennosc genetyczna
    analiza DNA
    markery mikrosatelitarne
    scots pine
    genetic variation
    gene pool
    genetic structure
    ssr markers
    Opis:
    The rychtal pine is one of the most valuable ecotypes of Scots pine (Pinus sylvestris L.) approved for the breeding purposes in Poland. However, it occupies stands typical for oaks and beeches as shown by the compatibility analysis of species composition in relation to the habitat type in which they occur. Such result raises some doubts in terms of the naturalness of the rychtal pine and calls its history and origin into question. In the present study, we used the set of nuclear microsatellite markers to characterize and compare the gene pool composition of the selected seed tree stands of the rychtal pine with 200−year−old pine trees which grow at the Syców Forest District (SW Poland). We aimed to know to what extent the set of alleles specified for the group of the oldest trees from natural habitats is represented in the younger forest tree stands of the rychtal pine. The analysis of molecular variance (AMOVA) and clustering analysis showed that the gene pool of the studied pine populations was homogenous (FST=0,02%, K=1). The parameters of genetic variation were similar for all populations except for the mean number of alleles. On average, 25 new alleles were found in two rychtal pine seed tree stands as compared to the set of alleles found in the group of old pine trees. However, all alleles defined for old pines were also present in the gene pool of younger rychtal pine forest stands. The differences in the gene pool richness result most likely from quite high differences in the number of individuals analyzed from each population. In conclusion, our results indicate the common origin of the studied Scots pine populations.
    Źródło:
    Sylwan; 2019, 163, 08; 637-644
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zmiany w strukturze genetycznej naturalnego odnowienia dębu (Quercus petraea [Matt.] Liebl.) w odniesieniu do drzew matecznych
    Changes in genetic structure of sessile oak (Quercus petraea [Matt.] Liebl.) natural regeneration in relation to maternal trees
    Autorzy:
    Nowakowska, J.A.
    Michalska, A.
    Zachara, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/990023.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    badania genetyczne
    dab bezszypulkowy
    Quercus petraea
    odnowienia naturalne
    struktura genetyczna
    markery DNA
    drzewa potomne
    drzewa mlode
    zroznicowanie genetyczne
    drzewa mateczne
    zmiennosc genetyczna
    ssr markers
    genetic differentiation
    natural regeneration
    Opis:
    The genetic variability of sessile oak (Quercus petraea L.) mature stand and its natural progeny was investigated. Comparison between genetic structure of parental and progeny trees was based on frequencies of nuclear microsatellite (SSR) alleles occurring in three DNA loci. A slight (4%) increase of gene pool between oak mature and progeny trees was revealed by heterozygosity level estimation, maintaining 86.3% of genetic similarity between generations. Also allele richness, partition probability of basic clustering and inbreed coefficient proved the high genetic similarity between parental and progeny of investigated oak trees. The gene flow occurred within the stands as far as rare alleles were transmitted or new ones appeared in the progenies. The results highlight the necessity of such a study for silvicultural measures taken in order to proceed natural or artificial regeneration in forest tree stand.
    Źródło:
    Sylwan; 2014, 158, 02; 83-89
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie zmienności genetycznej pokolenia matecznego i sztucznie wyhodowanego potomstwa sosny zwyczajnej na podstawie analiz DNA
    Comparison of the genetic variability of Scots pine trees and their progeny from nursery production based on DNA analyses
    Autorzy:
    Konecka, A.
    Tereba, A.
    Bieniek, J.
    Nowakowska, J.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/985843.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    hodowla lasu
    sosna zwyczajna
    Pinus sylvestris
    zmiennosc genetyczna
    analiza DNA
    markery mikrosatelitarne
    drzewa mateczne
    drzewa potomne
    sadzonki z zakrytym systemem korzeniowym
    genetic diversity
    ssr markers
    forest nursery production
    pinus sylvestris l.
    Opis:
    The production of forest tree species in forest nurseries is performed via two main breeding systems: i) the traditional (conventional) way with the seedlings grown in soil, and ii) plants cultivated in the containers. The aim of the study was to assess the level of genetic variability in the populations of the mother stands and the progeny populations of Scots pine cultured with traditional way (in soil) and in containers in two nurseries in Olsztynek (N Poland) and Oleszyce (S Poland) forest districts. Four polymorphic microsatellite markers (SPAG 7.14, SPAC 11.6, SPAC 12.5 and SsrPt_ctg4363) were used to evaluate the genetic variability of the studied populations. The basic hypothesis assumed that higher gene pool characterizes the seedlings grown in the containers comparing to the seedlings grown in the ground. The results confirmed that. Seedlings from containerized breeding had larger gene pool and were more diverse than plants with conventional breeding, both in Olsztynek and Oleszyce. Our study revealed a significant human impact on shaping the pool of forest genetic resources of Polish forests at the early stage of nursery production and showed the need for a broader study on further stages of cultivation of forests.
    Źródło:
    Sylwan; 2018, 162, 01; 32-40
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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