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    Wyświetlanie 1-5 z 5
    Tytuł:
    On the geographic variation of Ciboria batschiana (Zopf) Buchwald, the main pathogenic fungus on acorns of Quercus robur and Q.petraea in Europe
    Autorzy:
    Schroder, T
    Powiązania:
    https://bibliotekanauki.pl/articles/41225.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    seed-borne fungi
    seed storage
    geographic variation
    Ciboria batschiana
    acorn
    pathogenic fungi
    fungi
    Quercus robur
    Quercus petraea
    Opis:
    Mycelial growth of the pathogenic fungus Ciboria batschiana (Zopf) Buchwald was examined at nine temperature levels between -3°C and +35°C using pure cultures of the fungus from eleven different provenances located in Germany, Poland, the Czech Republic and Slovenia. The fungus was isolated mainly from cotyledons of acorns of the oak species Quercus robur L. and Quercus petraea (Matt.) Liebl. Even at -3°C the mycelium of the fungus grew well. There were significant differences between the provenances in respect to growth rate and temperature tolerance, especially at low temperatures.
    Źródło:
    Dendrobiology; 2002, 47 Supplement
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Systematics and distribution of spruce species in the North-West of Russia
    Autorzy:
    Orlova, L.
    Gussarova, G.
    Glazkova, E.
    Egorov, A.
    Potokin, A.
    Ivanov, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078206.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Picea
    diagnostic characters
    morphology
    plant variation
    geographic distribution
    Opis:
    Norway spruce (Picea abies) and Siberian spruce (P. obovata) are among the most important forest-forming coniferous species in the boreal part of Eurasia. Despite numerous publications on the taxonomy of Norway spruce and closely related taxa (P. obovata Ledeb. and P. fennica (Regel) Kom.), the problem of their identification, as well as clarification of their taxonomic status, has not been solved so far. Species delimitation is particularly challenging when P. abies, P. obovata and P. fennica occur in sympatry. Our study aims to assess taxonomic value of proposed earlier and search for stable diagnostic characters of cones and their scales to distinguish Picea abies and its sympatric in the North-West of Russia P. fennica and P. obovata. In addition, we analyzed and updated information on geographical distribution and phytocenotic characteristics of the above-mentioned species in the North-West of the European part of Russia. We examined herbarium specimens and cones sampled from 88 trees from 22 Picea stands located throughout the study region. Each tree was represented on average by 5 cones, in total 415 cones were analyzed. Morphometric analyses included 16 morphological characters of cones and their scales selected based on our own observations and published data. Multivariate comparison had shown a large overlap between P. obovata and P. fennica, while individuals of P. abies formed a separate and less overlapping cluster. Among the six qualitative (discrete) characters, shape of seed scale and shape of its upper margin have non-overlapping frequency distributions and can separate P. abies and P. obovata. Several new diagnostic characters are proposed: morphology and size of bract scales and ratio of the size of seed scales and bract scales. Phytocenotic analysis showed that different spruce taxa occupy specific habitats, which in their turn connected with the latitudinal gradient: in normally drained habitats, Picea obovata is found mainly in poor shrubby-green-mossy forests, which are typical of the northern and middle parts of the Northern taiga; Picea abies – in richer green-mossy habitats (Vaccinioso-hylocomiosum, Oxalidoso-hylocomiosum, Hylocomiosum), which begin to occur already from the middle part of the Northern taiga. Picea fennica occupies both habitats.
    Źródło:
    Dendrobiology; 2020, 84; 12-29
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pinus mugo Turra geographic differentiation based on needle characters
    Autorzy:
    Boratynska, K
    Muchewicz, E.
    Drojma, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41739.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Pinus mugo
    needle
    geographic differentiation
    dwarf mountain pine
    plant variation
    plant taxonomy
    plant migration
    needle width
    needle thickness
    Opis:
    The needles of 17 samples representing 15 populations of Pinus mugo Turra from the Alps, Apennines, Sudethians, Carpathians and Rhodopes were analysed in respect to 15 morphological and anatomical characters. The results of measurements were analysed statistically. The variation of the samples was generally not to large. Populations from the East Carpathians appeared different from all other examined. Two formed groups of analysed populations are separated mainly by thickness of epidermal cells, width/thickness of epidermal cell ratio, needle width and needle thickness. The differences between two groups of populations suggest their longer separation during Pleistocene.
    Źródło:
    Dendrobiology; 2004, 51; 9-17
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic variation of the relict and endangered population of Chamaedaphne calyculata (Ericaceae) in Poland
    Autorzy:
    Szczecinska, M
    Sawicki, J.
    Wasowicz, K.
    Holdynski, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/41179.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    plant species
    rare species
    Polska
    endangered population
    relict population
    genetic variation
    Chamaedaphne calyculata
    Ericaceae
    genetic diversity
    conservation
    geographic distribution
    Opis:
    Chamaedaphne calyculata is rare and endangerded species of Polish flora. The genetic variation within and among ten polish population of leatherleaf was analysed by ISSR and ISJ markers. The analysis revealed a total of 160loci with an average of 13.3 bands per primer. We expected a low level of genetic diversity of this narrowly distributed species in Poland, but our results indicate that Ch. calyculata revealed a high level of genetic diversity at species level (P=88.7%of polymorphic loci, AE=1.468, HE=0.290). At the population level, the variation of Ch. calyculata was significantly lower (P=27.6%, AE=1.140, HE=0.098). There was significant correlation between ecological properties (population size; number of flowering ramets) and genetic diversity parameters. Analysis of molecular variance showed that most of variation (62%) in Ch. calyculata occurred among population. Gene flow (Nm) between the ten studied populations, determined based on the GST index, was very low at 0.239. It indicated that the fragmentation and isolation of populations might result from specific evolutionary history of this plant and postglacial recolonization
    Źródło:
    Dendrobiology; 2009, 62; 23-33
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geographic distribution of quantitative traits variation and genetic variability in natural populations of Pinus mugo in Central Europe
    Autorzy:
    Boratynska, K.
    Dzialuk, A.
    Lewandowski, A.
    Marcysiak, K.
    Jasinska, A.K.
    Sobierajska, K.
    Tomaszewski, D.
    Burczyk, J.
    Boratynski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/41495.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    geographic distribution
    quantitative trait
    variation
    genetic variability
    genetic diversity
    isoenzyme
    natural population
    Pinus mugo
    phenotypic diversity
    chloroplast
    microsatellite
    Central Europe
    Europe
    Opis:
    Divergence in genetic as well as phenotypic structures can be expected in species with disjunctive geographic ranges and restricted gene flow among isolated populations. Dwarf mountain pine has such a disjunctive geographic range in the mountains of Central Europe. We hypothesised that populations of Pinus mugo from the Giant Mts. differ from Alpine and Carpathian populations to a greater extent than differentiation within these regions; furthermore, these differences would be detectable at both the genetic and phenotypic levels. To verify this hypothesis, the diversity and differentiation within and among eleven populations from the Giant Mts., Carpathians and Alps were analysed using 19 isozyme isozyme loci, 17 needle and 15 cone morphological characters. Moreover, the data on 10 chloroplast microsatellites used in the previous study, were reanalysed. The differences between the three regions were greater than among populations within them. The microsatellites and isozymes clearly differentiated between regions, while in the multivariate analyses of cone and needle characters the Alpine and Carpathian populations were intermingled but distinct from those sampled in the Giant Mts. The significant genetic structuring among regions may result from an ancient fragmentation and long lasting geographic isolation between the Giant Mts., Alps and Tatras. The populations from the Giant Mts., the northernmost within the geographic range of P. mugo, presented lower level of genetic variation then those from the Alps and Carpathians. The pattern of genetic structure observed in dwarf mountain pine may be characteristic of wind-pollinated trees with a disjunctive geographic distribution
    Źródło:
    Dendrobiology; 2014, 72
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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