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    Wyświetlanie 1-11 z 11
    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:
    Variation in acorn traits among natural populations of Quercus alnifolia, an endangered species in Cyprus
    Autorzy:
    Anagiotos, G.
    Tsakaldimi, M.
    Ganatsas, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/41714.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    variation
    acorn trait
    natural population
    Quercus alnifolia
    endangered species
    seed germination
    desiccation
    golden oak
    plant morphology
    population variability
    Cyprus
    Opis:
    Quercus alnifolia is an endemic species in Cyprus, and it is rated as Vulnerable (VU) in the Red List of Oaks. Although Q. alnifolia has a great ecological importance, there are only few studies about this species. In this work we have studied the natural variability of this species by analyzing acorn dimensions, acorn mass, length of embryo, moisture content of acorns and seed germinability among the seven acorn provenances, collected in Cyprus. We also determined the seeds responses to drying. Germination trials were also carried out, and differences in seed germination among populations were examined. Rate of water loss and its effect on seed germination was also estimated by application of specific desiccation treatments. The results showed that acorn characteristics significantly differed between the populations, following a general trend to reduce their dimensions and mass with the altitude increase. Seed germination was high for all studied populations, and germination behaviour was similar for all populations. Desiccation of acorns below 35% resulted in a great reduction of seed germination capacity.
    Źródło:
    Dendrobiology; 2012, 68
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variation in sex expression in Polish and Ukrainian populations of Taxus baccata L.
    Autorzy:
    Iszkulo, G
    Jasinska, A.K.
    Powiązania:
    https://bibliotekanauki.pl/articles/41564.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    tree
    yew
    Taxus baccata
    Polish population
    Ukrainian population
    sex expression
    monoecious species
    dioecious species
    sex evolution
    gymnosperm
    Opis:
    The aim of the present study was to analyse the occurrence of monoecious individuals in selected populations of Taxus baccata in Poland and Ukraine. The investigation showed the monoecy in Taxus baccata to be extremely rare phenomenon. Only four cosexual individuals were found in three by seven populations examines and the frequency of monoecy was 0.13% on average among 2986 trees verified. Isolated seeds were found on individuals with large number of male flowers. Only one tree was found with numerous macro- and microstrobiles.
    Źródło:
    Dendrobiology; 2004, 52; 29-32
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Loiseleuria procumbens: differentiation of the seed size of some chosen European populations
    Autorzy:
    Szkudlarz, P
    Powiązania:
    https://bibliotekanauki.pl/articles/41637.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    variation
    length
    Loiseleuria procumbens
    Alpine azalea
    seed size
    Europe
    width
    distribution
    population
    Opis:
    Loiseleuria is a monotypic genus of the family Ericaceae. The only species of this genus, L. procumbens, is an arctic-alpine element with a circumpolar distribution, found in the subarctic zone and in mountain ranges located further south. Results of earlier research on the structure of its fruits and seeds (Szkudlarz 2002) suggested that there are some differences between populations from different parts of its natural range of distribution. To verify this hypothesis, seed dimensions in samples from distant localities were compared in this study. The presented results indicate that in populations from Scandinavia seeds are generally shorter than in central Europe.
    Źródło:
    Dendrobiology; 2003, 50
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intra-population variability of Picea abies from Zwierzyniec Lubelski and Blizyn (Poland)
    Autorzy:
    Kowalczyk, J
    Markiewicz, P.
    Matras, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/41233.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    international conference
    Europe
    forest ecosystem
    plant breeding
    tree
    Norway spruce
    Picea abies
    intrapopulation variability
    family variation
    heritability
    plant population
    Zwierzyniec Lubelski region
    Blizyn region
    Kutno Forest District
    Polska
    Opis:
    The study investigates the intra-population variability of the growth and quality traits of Norway spruce populations from Bliżyn and Zwierzyniec Lubelski. The two populations are included in the IUFRO 1972 experiment and exhibit a high growth dynamics and a narrow crown form. The research was carried out on the experimental plot established in 1996 in Chrosno (Kutno Forest District) using 8228 two-year-old seedlings planted in a single-tree plot design at a spacing of 1.5 × 1.5 m. The seedlings represent 191 open-pollinated families, among them 93 families of Norway spruce from the Bliżyn region and 98 families from the Zwierzyniec Lubelski region. The height, height increment and DBH of trees were measured periodically, and some quality traits were assessed. The last results come from the measurements done on the trees aged 10 years. It was found that the differences between the two populations of Norway spruce are statistically nonsignificant but both of them show wide within-population variability. This suggests that they have the potential to flexibly respond to future changes in the growth conditions or to seed transfer to other seed zones. Survival in the environmental conditions of the experiment was independent of family.
    Źródło:
    Dendrobiology; 2009, 61 Supplement
    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
    Tytuł:
    Geographic variation of Pinus heldreichii Christ from the Western Balkans based on cone and seed morphology
    Autorzy:
    Hodžić, M.M.
    Hajrudinović-Bogunić, A.
    Bogunić, F.
    Marku, V.
    Ballian, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078154.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Bosnian pine
    Dinaric Alps
    Scardo-Pindic massif
    morphometry
    population differentiation
    Opis:
    Pinus heldreichii (Bosnian pine) is a Balkan-Apennine endemic and relict pine species that inhabits high mountains in the Mediterranean and sub-Mediterranean regions. Nineteen populations of P. heldreichii from the Western Balkans encompassing 187 individual trees were examined to evaluate morphological variation, a rarely studied aspect of the species. Univariate and multivariate statistics were applied in order to assess the variation of morphological traits of cones and seeds, evaluate the relationships among the sampled populations and verify geographic differentiation in the Dinaric Alps versus Scardo-Pindic mountains. The observations of P. heldreichii covering the populations from the western margins and the centre of the species distribution range indicated a morphological variation among populations and their geographic structure. In general, the southern populations (Scardo-Pindic group) had lower values for the most of morphological traits than the northern ones (Dinaric group). The observed geographic differences between these populations exhibit a north-western to south-eastern gradient, with a few inconsistencies. The southernmost sampled population, Tomorr in Albania, showed remarkable morphological divergence from the other studied populations and appeared to be a distinct morphological group. The pattern of morphological variation in Bosnian pine most likely resulted from multiple effects of long-term isolation and fragmentation in high mountain systems, adaptation to extreme environments and human disturbances.
    Źródło:
    Dendrobiology; 2020, 84; 81-93
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variability of needle characters of Pinus mugo Turra populations in the Karkonosze Mountains in Poland
    Autorzy:
    Sobierajska, K
    Boratynska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/41473.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Polska
    Karkonosze Mountains
    mountain pine
    subalpine plant
    Pinus mugo
    needle variability
    morphological characteristics
    anatomical characteristics
    plant variation
    plant conservation
    plant population
    Opis:
    The basic aim of the work was to widen the knowledge about variation of Pinus mugo in the Karkonosze (Giant) Mountains and verification of provenance of several, probably planted populations on that basis. Seven populations were sampled, four on hardly accessible precipices of glacial cirques as natural, and three on the topical, mostly plane or only slightly in clined parts of the mountains as potentially alien ones. The variation of the needles was biometrically analyzed in respect of 23 morphological and anatomical characters. Measurement data were subject of multivariate statistical analyses. Results call attention on rather continuous variability of P. mugo in the Karkonosze Mts. The differences among samples were found as relatively low and no direct connections have been detected between variation and provenance from precipices versus plane sites.
    Źródło:
    Dendrobiology; 2008, 59; 41-49
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Differentiation of Pinus sylvestris populations of the Tatra Mts and the Tuchola forest expressed in the needle anatomical traits
    Autorzy:
    Urbaniak, L
    Chudzinska, E.
    Faferek, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/41621.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Polska
    Tatras Mountains
    Tuchola Forests
    Pinus sylvestris
    differentiation
    needle
    biometry
    statistical analysis
    anatomical trait
    plant population
    plant variation
    Opis:
    The differentiation among three populations of Pinus sylvestris of the Tatra National Park (TNP); Łysa Skała, Siwarowe Pańskie and Wielkie Koryciska has been investigated with regard to eight anatomical traits of needles. These populations were compared to a lowland population of Tuchola Forests. Five analyzed traits: the thickness of epidermis with cuticle, the mean of width of three epidermis cells, the width of needle cross-section, the height of a needle cross-section and the ratio of height to the width of a needle are characterized by a variation coefficient not exceeding 10%. Variation coefficients for the remaining traits: the number of resin canals, the distance between vascular bundles and a Marcet coefficient, range between 15.04 – 24.95%. The needles of the lowland population (Rzepiczna) turned out to be the widest as well as the thickest and with the biggest distance between vascular bundles. The Tatra populations of P. sylvestris have a considerably thicker cuticle together with epidermis compared with the lowland population of Tuchola Forests. None of the individual traits differentiate the populations which have already been regarded as distinct – Łysa Skała, found in the eastern part of the TNP and Wielkie Koryciska, from its western part. However, having carried out a discriminant analysis and Mahalanobis distances, the differentiation of the Tatra Scots pine in relation to its geographical location was reported. The individual character of P. sylvestris found in the eastern and western parts of the Tatra National Park might be a result of their different origin in the last glacial period.
    Źródło:
    Dendrobiology; 2008, 60; 35-43
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Taxonomic relationships and population differentiation of the south-western Eurasian Zelkova species inferred in leaf morphology
    Autorzy:
    Jasinska, A.K.
    Rucinska, B.
    Kozlowski, G.
    Fazan, L.
    Garfi, G.
    Pasta, S.
    Bétrisey, S.
    Gerber, E.
    Boratynska, K.
    Boratynski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078267.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    biogeography
    plant variation
    relict trees
    systematics
    taxonomy
    Ulmaceae
    Opis:
    The relict tree species Zelkova abelicea and Z. sicula (Ulmaceae) occur in Crete and Sicily, respec- tively. Zelkova abelicea grows in approximately 40 localities in the mountains of Crete, while Z. sicula has been found in only two stands in Sicily. We compared 25 morphological characters of the leaves of both species and used statistical methods (Tuk- ey’s test, discrimination analysis, principal component analysis, agglomeration) to reveal the differences between these two species, their relation to Z. carpinifolia (the third Zelkova south-west Eurasian species), and between the leaves from different shoot types. Our study represents the first comparative biometric analysis of the three Zelkova species localized in the western edge of the current geographic range of the genus. We found that the species differed from each other both, in terms of leaf form characters and level of leaf variation. Zelkova carpinifolia was clearly differ- ent from Z. abelicea, while the two populations of Z. sicula, SIB and SIA, were more similar to Z. carpinifolia and Z. abelicea, respectively. The latter finding supports the results of recent molecular studies suggesting the hybrid origin of Z. sicula. Zelkova abelicea, Z. sicula and Z. carpinifolia differ each other in the leaf characteristics and level of phenotypic variation.
    Źródło:
    Dendrobiology; 2021, 85; 60-77
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic structure of Picea abies populations growing on extreme sites as revealed by isoenzyme markers: a case study from Slovenia and Bosnia and Herzegovina
    Autorzy:
    Ballian, D
    Bogunic, F.
    Bozic, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/41007.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    international conference
    Europe
    forest ecosystem
    plant breeding
    tree
    Norway spruce
    Picea abies
    plant population
    genetic structure
    extreme site
    isoenzyme marker
    genetic variation
    gene polymorphism
    forest tree
    Slovenia
    Bosnia and Herzegovina
    forest community
    Sphagno-Piceetum community
    Opis:
    Three populations of Norway spruce from ecologically extreme environments in Slovenia and Bosnia and Herzegovina were examined for genetic polymorphism. The spruces there grow in specific forest communities (Sphagno-Piceetum) which represent the remnants of the post-glacial vegetation. The aim of the study was to search for similarities in the genetic variation among populations adapted to such conditions. In total, 10 isoenzyme systems involving 16 gene loci were analysed. The results showed differences in genetic differentiation at loci Got-B, Skdh-A and 6-Pgdh-C between the two Slovenian populations and the Bosnian population, but also indicated an interestingly close relationship between the Slovenian population Pohorje and the Bosnian population Nišići.
    Źródło:
    Dendrobiology; 2009, 61 Supplement
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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