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    Wyświetlanie 1-7 z 7
    Tytuł:
    Redefinition of the genera Malaxis Sol. ex Sw. and Microstylis [Nutt.] Eaton [Orchidaceae, Epidendroideae]
    Autorzy:
    Szlachetko, D L
    Margonska, H.B.
    Powiązania:
    https://bibliotekanauki.pl/articles/58410.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    redefinition
    Malaxis
    Malaxidinae
    taxonomy
    systematics
    Microstylis
    Orchidaceae
    Epidendroideae
    Opis:
    A new definition of the genera Malaxis Sol. ex Sw. and Microstylis (Nutt.) Eaton is presented. The genera are briefly described and illustrated. A list of Microstylis species is added. Four new nomenclatural combinations are proposed.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2006, 75, 3; 229-231
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pollen morphology of Quercus (subgenus Quercus, section Quercus) in Iran and its systematic implication
    Autorzy:
    Panahi, P.
    Pourmajidian, M.R.
    Pourhashemi, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/57449.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    pollen morphology
    Quercus
    Iran
    systematics
    taxonomy
    pollen grain
    pollen type
    Opis:
    For the first time, pollen morphology of 9 (4 spp. and 5 subspp.) taxa representing lobed leaved oaks of Iran in the family of Fagaceae has been examined and illustrated using light microscopy and scanning electron microscopy of acetolysed material. Detailed pollen morphological characteristics are given for Quercus section. The pollen grains are single, isopolar, radially symmetrical, tricolpate, tricolporoidate or tricolporate. Pollens were studied to show all possible characteristics like shape, size, apertures, wall thickness, etc., with special reference to the specific features of each pollen type such as structural, sculptural and suprasculptural patterns. There is considerable variation in pollen morphology between taxa so that, three types of pollen shape, five types of structural pattern, two types of sculptural pattern, five types of suprasculptural pattern and three types of perfora distribution are defined. Furthermore, the relationship between pollen morphology and taxonomy is discussed. Overall, pollen characters are shown to be a useful and informative tool for assessing taxonomic position within Quercus section in Iran.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2012, 81, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic variability of Euglena agilis [Euglenophyceae]
    Autorzy:
    Zakrys, B
    Empel, J.
    Milanowski, R.
    Gromadka, R.
    Borsuk, P.
    Kedzior, M.
    Kwiatowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/58369.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    phylogenesis
    Euglenida
    Euglena
    genetic variability
    molecular systematics
    botany
    taxonomy
    Euglenophyceae
    Euglena agilis
    Opis:
    The results of the internal transcribed spacer (ITS2) of extrachromosomal rDNA and the chloroplast SSU rDNA sequence analysis presented here confirmed elevated genetic polymorphism revealed earlier by RFLP and RAPD for seven clones of the cosmopolitan species - Euglena agilis Carter. High diversity among these clonal strains was not reflected by morphological criteria, with the exception of the only one character - the ability of the cell in its non-motile dividing states (palmella) to produce mucus and form a slimy envelope. Evolutionary adaptation as formation of slimy envelope may be attributed to different survival strategy of the species by which it adapts to life in a highly variable environment.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2004, 73, 4
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Flora of fallow lands of the Podlaski Przelom Bugu mesoregion
    Flora odlogow Podlaskiego Przelomu Bugu
    Autorzy:
    Skrzyczynska, J
    Stachowicz, P
    Powiązania:
    https://bibliotekanauki.pl/articles/27285.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    systematics
    species list
    locality list
    fallow land zob.fallow
    fallow
    multiaspect analysis
    flora
    Podlaski Przelom Bugu mesoregion
    Opis:
    Studies on flora of fallow lands of the Podlaski Przełom Bugu mesoregion were carried out between 2001 and 2003 in the area of 77 localities, situated in 20 communes. A systematic list of fallow land flora was made and its variation with respect to occurrence frequency, biological spectrum, persistence and belonging to geographic-historical and sociological-ecological groups was analyzed. Flora of fallow lands of the Podlaski Przełom Bugu mesoregion includes 442 species included in 60 families and 241 botanical genera. The most numerous group comprises very rare, rare and quite frequent species. In the floristic composition of the analysed flora, apophytes (72.2%) predominate over anthropophytes (2.8%) as well as perennials (61%) over ephemerals (39%). Considering the biological spectrum of flora, hemicryptophytes (49%) and terophytes (32%) predominate over other life forms. Forest and shrub species (18.5%) as well as meadow (17%) and xerothermic sward plants (17.4%) have the largest share in the flora. The abundant occurrence of segetal (15.8%) and long-lived ruderal communities (8.1%) was also noted. Moreover, the occurrence of 25 species endangered with extinction in fallow land communities of the Południowopodlaska Lowland was noted. They are as follows: Nigella arvensis, Potentilla recta, Platanthera chlorantha, Agrostemma githago, Prunella grandiflora, Populus alba, Silene tatarica, Papaver argemone, Papaver rhoeas, Veronica polita, Hieracium floribundum, Bromus secalinus, Polygonum bistorta, Geum alleppicu, Astragalus arenarius, Centaurium erythraea, Veronica agrestis, Veronica verna, Cirsium rivulare. Allium oleraceum, Hierochloë odorata, Chenopodium polyspermum, Vinca minor, Dipsacus silvestris and Campanula latifolia.
    Badania flory odłogów Podlaskiego Przełomu Bugu przeprowadzono w latach 2001-2003 na terenie 77 miejscowości położonych w 20 gminach. W pracy przedstawiono systematyczny wykaz gatunków flory odłogów tego terenu oraz jej zróżnicowanie pod względem częstości występowania, spektrum biologicznego, trwałości oraz przynależności do grup geograficzno-historycznych i socjologiczno-ekologicznych. Zinwentaryzowana flora odłogów Podlaskiego Przełomu Bugu liczy 442 gatunków, należących do 60 rodzin i 241 rodzajów botanicznych. Najliczniejszą grupę stanowią gatunki bardzo rzadkie, rzadkie i dość częste. W analizowanej florze przeważają apofity (72,2%) nad antropofitami (27,8%) oraz gatunki wieloletnie (61%) nad krótkotrwałymi (39%). W spektrum biologicznym flory dominują hemikryptofity (49%) i terofity (32%) nad innymi formami życiowymi. Największy ilościowy udział w grupach socjologiczno-ekologicznych mają gatunki leśne i zaroślowe (18,5%), łąkowe (17%) oraz muraw ciepłolubnych (17,4%). Licznie występują również gatunki segetalne (15,8%) i trwałych zbiorowisk ruderalnych (8,1%). W zbiorowiskach odłogów występuje 25 gatunków zagrożonych wyginięciem na Nizinie Południowopodlaskiej. Są to: Nigella arvensis, Potentilla recta, Platanthera chlorantha, Agrostemma githago, Prunella grandiflora, Populus alba, Silene tatarica, Papaver argemone, Papaver rhoeas, Veronica polita, Hieracium floribundum, Bromus secalinus, Polygonum bistorta, Geum alleppicum, Astragalus arenarius, Centaurium erythraea, Veronica agrestis, Veronica verna, Cirsium rivulare, Allium oleraceum, Hierochloë odorata, Chenopodium polyspermum, Vinca minor, Dipsacus silvestris, Campanula latifolia.
    Źródło:
    Acta Agrobotanica; 2007, 60, 1
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphological variability of the Caltha palustris L. complex [Ranunculaceae] in Poland
    Autorzy:
    Cieslak, E
    Powiązania:
    https://bibliotekanauki.pl/articles/58487.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Ranunculaceae
    systematics
    Caltha palustris ssp.cornuta
    botany
    statistics
    morphological variability
    Caltha laeta
    Caltha palustris ssp.radicans
    taxonomy
    Caltha palustris ssp.palustris
    Caltha palustris
    Opis:
    The paper presents results of biosystematic analysis of the critical group of Caltha palustris L. based on 71 populations from Poland. After a preliminary statistical analysis, fourteen morphological characters (nine quantitative and five qualitative), describing size and shape of basal leaves and mature follicles as well as stem morphology, were selected for the clearest differentiation of the complex. Several groups of morphotypes were distinguished within the complex, based on the statistical analysis of this group of characters. Against this background the taxonomy of the complex is proposed. Two species - Caltha laeta Schott, Nyman and Kotschy and Caltha palustris L. - and three subspecies within C. palustris (C. p. subsp. palustris, C. p. subsp. cornuta (Schott, Nyman and Kotschy) Hegi and C. p. subsp. radicans (T.F. Forst.) Syme, were distinguished in Poland. The status of the taxa within the Polish flora is defined. The paper includes also a key for determination of the complex taxa, as well as their detailed descriptions.
    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:
    Arbuscular mycorrhiza of plants spontaneously colonizing the soda heap in Jaworzno [Southern Poland]
    Autorzy:
    Gucwa-Przepiora, E
    Blaszkowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/58548.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    mycorrhizal status
    Polska
    spore population
    Glomus
    soda heap
    fungi
    Jaworzno
    plant systematics
    host
    Upper Silesian region
    Trifolium montanum
    plant species
    Glomeromycota
    industrial waste
    Centaurea stoebe
    Opis:
    The results of studies of the mycorrhizal status of plant species spontaneously established on the soda heap located in Jaworzno (Upper Silesia, Poland) are presented. Additionally, the species of arbuscular fungi of the phylum Glomeromycota extracted from field-collected rhizosphere substrate samples of the heap are showed. Arbuscular mycorrhizae were described in 17 plant species. Five Glomus spp. were recognized in the spore populations of arbuscular fungi isolated. The investigation presented in this paper for the first time revealed Centaurea stoebe and Trifolium montanum to be hosts of arbuscular fungi.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2007, 76, 1
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pollen morphology of Polish native species of the Rosa genus (Rosaceae) and its relation to systematics
    Autorzy:
    Wronska-Pilarek, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/57587.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    pollen morphology
    Polish species
    native species
    Rosa
    Rosaceae
    systematics
    Caninae
    Gallicanae
    taxonomy
    Rosa agrestis
    Rosa canina
    Rosa dumalis
    Rosa gallica
    Rosa inodora
    Rosa jundzillii
    Rosa kostrakiewiczii
    Rosa majalis
    Rosa micrantha
    Rosa mollis
    Rosa pendulina
    Rosa rubiginosa
    Rosa sherardii
    Rosa tomentosa
    Rosa villosa
    Rosa zalana
    Opis:
    The morphology of pollen grains of 16 species from the Rosa L. genus were studied (i.e. R. 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 16 native localities of those species in Poland. The measurements are based on at least 30-50 randomly selected, fully developed pollen grains per specimen. In total, 500 pollen grains were examined. They were analysed for 13 quantitative features of pollen grains and exine sculpturing and the following qualitative traits: outline, shape, "operculum" structure. The diagnostic features of pollen grains of studied species were: length of polar and equatorial axes and length of ectocolpi. The above-mentioned pollen grain morphological features make isolation of one species possible: R. gallica. R. gallica is distinguished for its highest values of the length of polar and equatorial axes, and the length of ectocolpi. The obtained analytical results of operculum and exine sculpture features, considered as diagnostic, corroborated only slightly their priority significance for the isolation of the examined species and sections. The collected data failed to confirm fully the current taxonomical division of the Rosa genus into sections (only section Gallicanae from R. gallica is isolated) as well as consanguinity relationships between the examined species from the Caninae section. On the dendrogram, both species closely related with each other as well as those from other developmental lines were found in the same group. These equivocal results are by no means surprising because the Caninae section is the most polymorphic group in the Rosa genus, and contemporary Caninae are of the nature of a swarm of R. canina hybrids as a link combining all taxons of the section.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2011, 80, 3
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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