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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:
    Allele rzadkie i prywatne jako miara bogactwa puli genetycznej materiału sadzeniowego sosny zwyczajnej
    Rare and private alleles as a measure of gene pool richness in Scots pine planting material
    Autorzy:
    Konecka, A.
    Tereba, A.
    Studnicki, M.
    Nowakowska, J.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/979462.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    material sadzeniowy
    pula genowa
    allele rzadkie
    allele prywatne
    zmiennosc genetyczna
    markery mikrosatelitarne
    genetic differentiation
    microsatellite markers
    forest nursery
    pinus sylvestris l.
    Opis:
    In forestry management, artificially produced planting material is mainly used for renewal the tree population. Seedlings are cultivated in two systems: in the ground (the bare−root seedlings) and in controlled conditions (container seedlings). The aim of the study was to analyse the microsatellite markers of nuclear and chloroplast DNA, in terms of the number and frequency of rare, private, low frequency and common alleles in the planting material of Scots pine. The rare alleles included alleles occurring with less than 1% in analyzed group of seedlings and low frequency alleles occurred with a frequency of less than 25%. The private alleles were detected only in one group of seedlings. Genetic pools of seedlings from traditional (soil) and container production were compared. Planting material came from nurseries in the Olsztynek (N Poland) and the Oleszyce (S Poland) forest district. With the similar number of observed nDNA and cpDNA alleles in both analyzed locations, a higher number of rare, low frequency and private alleles was found within container seedlings. Most private alleles were a rare allele. Rare and private alleles are supposed to be responsible for adaptation to changing climatic conditions and a stressful environment. It seems reasonable to continue research on the meaning of rare and private alleles under conditions of strong selective pressure.
    Źródło:
    Sylwan; 2019, 163, 11; 948-956
    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:
    Stan zdrowotny a zróżnicowanie genetyczne wybranych drzewostanów świerkowych na terenie RDLP w Krośnie
    Genetic variability and health of Norway spruce stands in the Regional Directorate of the State Forests in Krosno
    Autorzy:
    Gutkowska, J.
    Borys, M.
    Tereba, A.
    Tkaczyk, M.
    Oszako, T.
    Nowakowska, J.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1293265.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    RDLP Krosno
    drzewostany swierkowe
    stan zdrowotny lasu
    drzewa lesne
    swierk pospolity
    Picea abies
    zroznicowanie genetyczne
    markery molekularne
    markery mikrosatelitarne
    DNA mitochondrialny
    Norway spruce
    health state
    SSR markers
    mtDNA
    genetic diversity
    Opis:
    The study was conducted in 2015 in six spruce stands situated in different forest districts administratively belonging to the Regional Directorate of Forests State in Krosno. Each spruce population was represented by 30 trees and assessed in terms of their current health status. Genetic analyses were performed based on shoot samples from each tree using nine nuclear DNA markers and one mitochondrial DNA marker (nad1). The health status of the trees was described according to the classification developed by Szczepkowski and Tarasiuk (2005) and the correlation between health classes and the level of genetic variability was computed with STATISTICA (α = 0.05). Nuclear DNA analyses revealed a low level of genetic variability among spruce populations (only 3% of the total genetic variation (FST = 0.028) and a high variability within populations (97%). The total heterozygosity in all stands (HT) was calculated as 0.646. Based on UPGMA analysis, the most genetically similar populations are spruce stands in the Bieszczady National Park and the Ustrzyki Dolne Forest District, which have the smallest genetic divergence of all populations (DN = 0.0165). Our analysis of the mitochondrial gene nad1 revealed the presence of six different haplotypes “a”, “a1”, “b”, “c”, “d” and “d1”. Comprising 56% of all haplotypes, “a” was the most common showing a predominant impact on spruce migration from the Carpathian area. The analysis based on mitochondrial markers (by Nei) revealed a heterozygosity of 0.525. Based on the observations of disease symptoms, 29% of the trees belong to health class 1,30% to class 2,28% to class 3 and class 4 contains 13% of trees. The comparison between health status and the level of genetic variation in the analyzed stands showed a positive correlation. Spruce stands with better health were also characterized by a greater degree of genetic variability. Since most of the investigated spruce populations shared the mitochondrial haplotype “a”, we have ascertained their Hercynian- Carpathian origin. Only one stand (Cisna) had a high frequency (43.3%) of the Nordic haplotype “c” suggesting that this provenance is derived from the Baltic post-glacial refugium of P. abies in Europe.
    Źródło:
    Leśne Prace Badawcze; 2017, 78, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    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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