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    Wyświetlanie 1-4 z 4
    Tytuł:
    Pollen morphological variability of Polish native species of Rosa L. (Rosaceae)
    Autorzy:
    Wronska-Pilarek, D
    Jagodzinski, A.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41275.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Polish species
    native species
    Rosa
    Rosaceae
    Caninae
    Cinnamomeae
    taxonomy
    pollen variability
    pollen morphology
    quantitative feature
    pollen grain
    locality
    Opis:
    The variability of pollen grains of 16 species from genus Rosa L. was studied (i.e. Rosa agrestis, R. canina, R. dumalis, R. gallica, R. inodora, R. jundzillii, R. kostrakiewiczii, R. majalis, R. micrantha, R. mollis, R. pendulina, R. rubiginosa, R. sherardii, R. tomentosa, R. villosa, and R. zalana). The material came from 107 native localities of those species in Poland. The measurements are based on at least 30–50 randomly selected mature pollen grains per specimen. In total, 3510 pollen grains were examined. They were analysed for 8 quantitative features, i.e. length of polar axis (P), length of equatorial axis (E), exine thickness on the pole (Exp), exine thickness at the equator plane (Exe), length of ectocolpi (Le), P/E ratio, and relative thickness of exine (Exp/P and Exe/E ratio). Statistically significant differences were found among the examined species with regard to all analysed pollen features. The pollen and ectocolpi dimensions (P, E and Le) were largest in R.gallica (35.9, 28.1, and 28.0 μm, respectively) and smallest in R. majalis (27.0, 20.2, and 21.2 μm, respectively). The mean coefficients of variability of the pollen features measured can be used to arrange the examined rose species from the least to the most variable as follows: R. pendulina, R. villosa, R. jundzillii, R. inodora, R. canina, R. rubiginosa, R. dumalis, R. gallica, R. agrestis , R. micrantha, R. zalana, R. tomentosa, R. sherardii, R. majalis, R. kostrakiewiczii and R. mollis. The obtained data failed to confirm fully both the division of the Rosa genus currently in force in taxonomy into sections as well as relationships among the examined species from the Caninae section. In addition, values of morphological characters of the same species may differ considerably from one another. The extent of these differences indicated that it was necessary to measure large numbers of pollen grains in order to obtain accurate biometric data.
    Źródło:
    Dendrobiology; 2009, 62; 71-82
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intra- and interindividual variability of selected quantitative features of pollen grain morphology based on the example of Rosa canina L. (Rosaceae)
    Autorzy:
    Wronska-Pilarek, D.
    Jagodzinski, A.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41774.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    intraindividual variation
    interindividual variability
    quantitative feature
    pollen grain
    morphology
    Rosa canina
    Rosaceae
    palynology
    biometric analysis
    Opis:
    The objective of this study was to investigate the ranges of intra- and interindividual variability on the example of R. canina. For this purpose, four flowers were collected randomly (72 flowers in total)from 18 wild shrubs of R. canina growing in one population in Poznań (Poland)and then, from each flower, 50 correctly formed pollen grains (200 pollen grains per each individual)were selected. Inter- and intraindividual pollen grain variability was characterised based on 3600 pollen grains. They were analysed for seven quantitative features, i.e. length of polar axis (P), equatorial diameter (E), thickness of the exine along the polar axis (Exp), length of ectocolpi (Le) and P/E, Exp/P, and Le/P ratios. Our study revealed highly significant differences among flowers of the particular R. canina individuals with respect to all pollen grain biometrical features. In addition, it showed that the assessment of the full range of variability in pollen grain biometric features within one individual (shrub)was more reliable if we examined several pollen grains from several flowers than for the same number of pollen grains derived from a single flower. We also found statistically significant differences among particular individuals in all pollen grain features. This proves that in order to well characterise a population of a given species from the point of view of palynology, the plant material should derive from a possibly numerous number of individuals (shrubs).
    Źródło:
    Dendrobiology; 2012, 67
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The vascular plants and plant communities of the "Zrodla Rzeki Lyny im. prof. R. Kobendzy" Nature Reserve
    Autorzy:
    Wronska-Pilarek, D.
    Kicinski, P.
    Jagodzinski, A.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/878386.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Przyrodniczy w Poznaniu
    Tematy:
    vascular plant
    plant community
    Zrodla Rzeki Lyny im.prof.R.Kobendzy Nature Reserve
    Lyna River
    flora
    Opis:
    The “Źródła Rzeki Łyny im. prof. R. Kobendzy” nature reserve was established in 1959 and occupies the area of 120.54 ha. The paper describes fl ora and plant communities of this reserve. In total 409 vascular plant taxa from 70 families and 235 genera were inventoried, including 24 species which are under legal protection, as well as rare plants and those which are threatened in this region. Nine plant communities were identifi ed within the boundaries of the reserve of which three were forest autogenic or autogenic-like communities (Ribeso nigri-Alnetum, Stellario nemorum-Alnetum glutinosae, Tilio cordatae- -Carpinetum betuli), three were forest anthropogenic communities with Pinus sylvestris, Betula pendula, Larix decidua and Larix ×eurolepis and Picea abies on lime-oak-hornbeam forest sites, as well as three non-forest communities (Salicetum pentandro-cinereae, Phragmitetum australis and a meadow community from the Molinio-Arrhenatheretea class). The highest natural value was determined in very well developed phytocoenoses of Stellario nemorum-Alnetum glutinosae (the rarest in the reserve), in Ribeso nigri-Alnetum and Tilio cordatae-Carpinetum betuli, as well as meadow communities from the Molinio-Arrhenatheretea class. They provide sanctuary for many species of rare and threatened plants.
    Źródło:
    Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2013, 17
    1896-1908
    Pojawia się w:
    Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Taxonomic significance of achene morphology of selected Rosa taxa (Rosaceae) occurring in Poland
    Autorzy:
    Jagodzinski, A.M.
    Maciejewska-Rutkowska, I.
    Wronska-Pilarek, D.
    Bocianowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/59025.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    Achenes of roses were rarely studied and the studies were focused on anatomical research, mainly on pericarp structure and its development. We investigated the achene morphology by light- and scanning electron microscopy (LM and SEM) of 17 Rosa taxa from three sections (R. gallica from Gallicanae section, R. pendulina and R. rugosa from Rosa section, and R. agrestis, R. canina, R. canina var. corymbifera, R. dumalis, R. dumalis var. caesia, R. inodora, R. jundzillii, R. micrantha, R. rubiginosa, R. sherardii, R. ×subcanina, R. tomentosa, R. villosa, R. zalana from Caninae section). Eight quantitative and eight qualitative features were examined based on 9181 achenes, in total. Average achene size ranged from 4.37 to 5.39 mm in length and from 2.57 to 3.32 mm in width. The lowest morphological variability among the examined taxa was found in R. canina var. corymbifera, and the highest in R. gallica, R. inodora, and R. sherardii. The most diagnostic features of the achenes studied were suture (visible or invisible), presence or absence of hairs, hairs distribution and density, the exocarp sculpture and cuticle pattern type (we have distinguished four exocarp sculpture and three cuticle pattern types), and length. Qualitative achene features have significantly higher diagnostic value than quantitative ones. Taxonomical value of these features is quite high on the species and section level. Our study has shown that the previously mentioned morphological features of achenes can be used as valuable, additional diagnostic features in delimitation of Rosa taxa at the species and section level. Based on the morphological features of achenes, a determination key for all Rosa taxa studied was created.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2016, 85, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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