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    Wyświetlanie 1-7 z 7
    Tytuł:
    Morphological differentiation of Primula veris L. pollen from natural and cultivated populations
    Autorzy:
    Morozowska, M
    Idzikowska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/58673.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    statistical analysis
    Primulaceae
    natural population
    cultivated population
    pollen morphology
    Primula veris
    morphological differentiation
    Opis:
    Micromorphological characterisation and the comparative statistical analysis of the size of Primula veris L. pollen grains collected in three natural and three cultivated populations were done. Observations were carried out with SEM. The obtained measurements were analysed with the use of one-way ANOVA, Kruskal-Wallis Test and the Student-t Test. Pollen grains from long-styled ('pin') flower-morphs were mainly 6 colpate and from shortstyled ('thrum') flower-morphs 8 colpate. Colpi of some grains from 'thrum' flowers were 'sinuous' and 'circular', and they incised into the apocolpium zone. Ornamentation of 'pin' pollen grains was microreticulate, with lumina up to 0.8 μm wide, and for pollen grains from 'thrum' flowers was reticulate and eureticulate with lumina 1.1-1.7 μm wide. In lumina of mesocolpium area some free columellae were observed. Pollen grains from 'thrum' flower-morphs were more variable in size, both in natural and in cultivated populations, than grains from 'pin' flower-morphs. The differences in mean length (P) and breadth (E) of pollen grains from 'thrum' flowers collected in cultivated populations were statistically important (FP = 3.154 for the critical F005 = 3.098; K-We = 7.469 for the critical Test value α=005 = 5.991). Pollen grains from 'thrum' flowers were bigger when coming from plants growing in natural populations (tE = 2.784 for the critical Test value α=005 = 2.001).
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2004, 73, 3
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphological and molecular differentiation of the Croatian populations of Quercus pubescens Willd. [Fagaceae]
    Autorzy:
    Franjic, J
    Liber, Z.
    Skvorc, Z.
    Idzojtic, M.
    Sostaric, R.
    Stancic, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/56985.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    morphological differentiation
    molecular differentiation
    Croatia
    plant population
    Quercus pubescens
    Fagaceae
    random amplified polymorphic DNA analysis
    introgression
    Opis:
    Taxonomy of the genus Quercus L. is very complicated and often controversial because of its great variability and intense gene flow among the related species. The purpose of this research was to determine morphological and molecular variation, relationships and taxonomic status of the Croatian populations of Quercus pubescens Willd. using morphological analysis of the leaves and RAPD-PCR technique. The results of the morphological and molecular analyses were very similar, both showing differentiation of the southern (Mediterranean) from the northern (Continental) pubescent oak populations. These two groups were clearly separated and the estimated gene flow among the populations that belong to different groups (Nm=1.38) is significantly less than among the populations that belong to the same group (Nm=3.70). The obtained results were compared to the available studies. This study confirms a high variability of the Q. pubescens populations, but differences were not so big to confirm the opinion of existence of several species in this area. The conclusion is that the southern Croatian populations could be pure Q. pubescens populations, while the peculiarities of the northern Croatian populations originate probably from the Q. petraea introgression.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2006, 75, 2; 123-130
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic and morphological differentiation between Melica ciliata L. and M. transsilvanica Schur (Poaceae) in Europe reveals the non-presence of M. ciliata in the Polish flora
    Autorzy:
    Szczepaniak, M.
    Cieslak, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/58124.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    genetic differentiation
    morphological differentiation
    Melica ciliata
    Melica transsilvanica
    Poaceae
    Europe
    Polska
    flora
    biodiversity protection
    wild species
    conservation
    morphological variation
    AFLP marker
    Opis:
    A good knowledge of species delimitation is crucial for the biodiversity protection and the conservation of wild species. We studied the efficiency of AFLP markers and morphological characters to assist species determination for Melica ciliata L. and M. transsilvanica Schur within European range of distribution, including isolated and range-limit populations of "M. ciliata" (i.e. M. cf. ciliata) from the Polish Sudetes, where it is regarded as critically endangered. AFLP markers were found to be more effective then morphological characters (more or less continuous) in distinguishing the both studied species. AMOVA revealed very low genetic diversity within populations and high differentiation among populations of M. ciliata and M. transsilvanica (FST = 0.89 and 0.95, respectively). The species-diagnostic AFLP markers of M. transsilvanica shared with "M. ciliata" from the Sudetes were detected. On the other hand, no species-diagnostic genetic markers of M. ciliata or hybrid-diagnostic markers of M. × thuringiaca were found within "M. ciliata". PCoA and NJ showed an overlapping genetic diversity of "M. ciliata" and M. transsilvanica. Hierarchical AMOVA supported the absence of a significant genotypic distinction between "M. ciliata" and M. transsilvanica. ANOVA showed that the length ratio of lower to upper glumes was the best morphological character to discriminate between M. ciliata and M. transsilvanica. Combined morphological and genetic data show that M. ciliata is not currently present in Poland as its putative Polish populations represent M. transsilvanica. A significant decrease in genetic variability that could influence viability was not observed the in Sudetian populations of M. transsilvanica. However, the population size changes significantly as a result of plant succession. Correction of the northern limit of the continuous distribution of M. ciliata L. in Central Europe is presented.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2011, 80, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphological variability of Juniperus phoenicea [Cupressaceae] from three distant localities on Iberian Peninsula
    Autorzy:
    Mazur, M
    Boratynska, K.
    Marcysiak, K.
    Gomez, D.
    Tomaszewski, D.
    Didukh, J.
    Boratynski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/57298.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    variability
    cone
    juniper
    statistical analysis
    locality
    Cupressaceae
    biometry
    Iberian Peninsula
    Juniperus phoenicea
    morphological differentiation
    Opis:
    The aim of the present study was biometrical comparison of three Iberian populations of Juniperus phoenicea, represented by the subsp. turbinata and subsp. phoenicea. Eight features of the cones and seeds, two of the shoots and leaves were studied. The biometrical analysis of three distant populations of J. phoenicea shows great taxonomic distances among them. Two of them, representatives of J. phoenicea subsp. turbinata, are closer related each other than to the third, which represents J. phoenicea subsp. phoenicea. These results confirm the genetic differentiation of the taxons and also the biochemical and morphologic division of them. Nevertheless, the distances between particular populations are so great that more resemble the distances between species than between subspecies.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2003, 72, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphological differentiation and distribution of non-glandular and glandular trichomes on Dracocephalum moldavicum L. shoots
    Zróżnicowanie morfologiczne oraz rozmieszczenie włosków mechanicznych i wydzielniczych na pędach Dracocephalum moldavicum L.
    Autorzy:
    Dmitruk, M.
    Weryszko-Chmielewska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/28120.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    morphological differentiation
    distribution
    non-glandular trichome
    glandular trichome
    Dracocephalum moldavica
    shoot
    trichome
    flower
    leaf
    stem
    bract
    Opis:
    The structure, micromorphology and distribution of trichomes on Dracocephalum moldavicum L. shots were investigated using light and scanning electron microscopy (SEM). There were distinguished 3 types of non-glandular trichomes, 3 types of glandular trichomes and papillae of the osmophore in the epidermis of the corolla. The highest density of non-glandular and glandular trichomes was found on the abaxial surface of the calyx, on bracts and in the upper part of the stem. Structural variations in the head and stalk of long glandular trichomes were demonstrated. The dimensions of particular types of trichomes are given in the present paper. Differences in the structure of the trichomes of this species are presented, compared to literature data. The micromorphology of particular trichome types is documented in numerous photographs showing the rich ornamentation of the cuticle of non-glandular trichomes.
    Źródło:
    Acta Agrobotanica; 2010, 63, 1
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphological variability of leaves of Sorbus domestica L. in Croatia
    Autorzy:
    Poljak, I.
    Kajba, D.
    Ljubic, I.
    Idzojtic, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/57486.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    service tree
    morphological variability
    leaf
    morphology
    Sorbus domestica
    population variability
    geographic differentiation
    ecological differentiation
    Croatia
    Opis:
    The paper studies the morphological variability of the service tree populations in the continental and Mediterranean regions of Croatia. The inter- and intra-population variability, as well as eco-geographic population differentiation, was established on the basis of eight measured morphological characteristics of two types of leaflets (lateral and terminal) and two derived ratios, using descriptive and multivariate statistical methods. The conducted research established a high variability of morphological characteristics. In comparison with lateral leaflets, terminal leaflets showed a higher degree of variability for the majority of the studied variables. The differences between the trees within populations, as well as the differences between populations, were confirmed for all studied characteristics. The study also confirmed a trend of population variations according to the eco-geographic principle. Populations from climatically different and geographically distant habitats, in other words from the Mediterranean and the continental region, differed in the majority of studied characteristics. In addition to the established pattern of ecotypical variability between the continental and the Mediterranean regions, the clinal variability with regard to altitude and mean annual temperature was also confirmed. Small, although statistically significant clinal variability with regard to the longitude was recorded for two measured characteristics. The conducted study provided insights into the variability of the service tree populations in Croatia, which is a basis for further research that should be implemented in order to produce guidelines for the breeding and conservation of genetic resources of this rare and endangered noble hardwood species.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2015, 84, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Differentiation of morphological traits of common tansy (Tanacetum vulgare L.) originating from different stands
    Zróżnicowanie cech morfologicznych wrotycza pospolitego (Tanacetum vulgare L.) pochodzącego z różnych stanowisk
    Autorzy:
    Kesik, T.
    Wojciechowska, A. E.
    Pitura, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/27176.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    differentiation
    morphological trait
    common tansy
    tansy
    Tanacetum vulgare
    stand
    soil
    chemical composition
    Opis:
    The aim of the study was to determine the effect of pH and soil chemical composition on morphological traits of common tansy (Tanacetum vulgare L.). A two-year study was conducted based on observations, measurements and analyses of material collected from 24 stands in the following regions: Równina Włocławska (Włocławek Plain), Wyżyna Lubelska (Lublin Upland), Padół Zamojski (Zamość Depression), Działy Grabowieckie (Grabowiec Divide) Płaskowyż Suchedniowski (Suchedniów Plateau), Wysoczyzna Siedlecka (Siedlce High Plain) and Niecka Połaniecka (Połaniec Basin). Morphological traits of tansy shoots were determined: number of plants per clump, stem length, number of leaves per plant, total leaf length, petiole length, number of branches from the main stem, number of flower heads per corymb and fl ower head diameter. A soil analysis was performed determining the content of magnesium, potassium and phosphorus available for plants. The soil pH was also determined. The collected results indicate significant differentiation of the investigated samples, both in terms of morphological traits of the shoots and the chemical composition of the soils. A negative correlation was found between soil pH and number of leaves per shoot as well as number of branches per corymb. A positive correlation was noted between soil pH and total leaf length as well as between magnesium content and number of flower heads per corymb. The increased content of available phosphorus in the soil was associated with petiole shortening. A growth trend in the tansy shoot length was observed at larger amounts of available magnesium in the soil. On soils with low nutrient availability and a low pH, a reduced population density of the species in question was observed.
    Celem pracy było określenie wpływu odczynu i składu chemicznego gleby, na cechy morfologiczne wrotyczu pospolitego (Tanacetum vulgare L.). Dwuletnie badanie zostały przeprowadzone na podstawie obserwacji, pomiarów i analiz materiału pobranego z 24 stanowisk rejonów: Równiny Włocławskiej, Wyżyny Lubelskiej, Padołu Zamojskiego, Działów Grabowieckich, Płaskowyżu Suchedniowskiego, Wysoczyzny Siedleckiej oraz Niecki Połanieckiej. Oznaczono cechy morfologiczne pędów wrotyczu: liczbę roślin w kępie, długość łodygi, liczbę liści na roślinie, długość całkowitą liści, długość ogonka liściowego; liczbę rozgałęzień od głównego pędu, liczbę koszyczków w podbaldachu oraz średnicę koszyczków. Wykonano analizę gleby określając zawartość dostępnego dla roślin magnezu, potasu i fosforu. Oznaczono również pH gleby. Zebrane wyniki wskazują na znaczne zróżnicowanie badanych prób zarówno pod względem cech morfologicznych pędów jak i składu chemicznego gleb. Stwierdzono ujemny związek pomiędzy odczynem gleby a liczbą liści na pędzie oraz liczbą rozgałęzień w podbaldachu. Dodatnią korelację odnotowano pomiędzy pH gleby a długością całkowitą liści, a także między zawartością magnezu, a liczbą koszyczków w podbaldachu. Zwiększona zawartość dostępnego fosforu w glebie wiązała się ze skróceniem ogonka liściowego. Zaobserwowano tendencję wzrostową dla długości pędów wrotyczu przy większej ilości przyswajalnego magnezu w glebie. Na glebach mało zasobnych i o niskim pH zauważono ograniczoną liczebność występowania populacji omawianego gatunku.
    Źródło:
    Acta Agrobotanica; 2008, 61, 2
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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