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Wyszukujesz frazę "Zenkteler, M." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Preliminary results on studies of in vivo and in vitro sexual reproduction of Salix viminalis L.
Autorzy:
Zenkteler, M
Wojciechowicz, M.
Bagniewska-Zadworna, A.
Jezowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/41263.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
embryonic development
Salix viminalis
willow
in vivo
sexual reproduction
in vitro
self-pollination
poplar
Opis:
In vivo and in vitro self-pollination of whole pistils of some clones of Salix viminalis enabled to obtain mature seeds containing cotyledonary embryos which after the transfer to MS medium developed into wholly formed seedlings. Pollination in vitro of placentae led to abundant pollen germination and formation of tubes which occasionally they were entering the ovules through micropyle. Fertilized ovules normally developed into germinable seeds. Distant pollination of stigmas in vivo and in vitro with pollen grains of Populus tremula, P.tomentosa, P. lasiocarpa showed the ability of pollen to germinate and to form tubes several hours after pollination. Some tubes penetrated the styles but did not enter into the placenta. When placentae were directly pollinated than pollen germinated abundantly and occasionally pollen tubes were found entering the micropyle. Embryological analysis of those ovules performed 3-5 days after pollination demonstrated the presence of globular embryos with several endosperm nuclei. The technique of in vitro placental pollination works well for Salix viminalis and it could probably be applied to other Salix species.
Źródło:
Dendrobiology; 2003, 50
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphology of uredinia and urediniospores of the fungus Melampsora larici-epitea Kleb. a damaging pathogen of common osier (Salix viminalis L.) in Poland
Morfologia urediniów i urediniospor grzyba Melampsora larici-epitea Kleb. - groźnego patogena wierzby wiciowej (Salix viminalis L.) w Polsce
Autorzy:
Ciszewska-Marciniak, J.
Jedryczka, M.
Jezowski, S.
Przyborowski, J.
Wojciechowicz, K.
Zenkteler, E.
Powiązania:
https://bibliotekanauki.pl/articles/26940.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
morphology
uredinium
urediniospore
fungi
Melampsora larici-epitea
pathogen
common osier
Salix viminalis
Polska
Opis:
Rust (Melampsora spp.) is a damaging disease of willows (Salix spp.), including common osier (S. viminalis L.). So far, the pathogens of this species found in Europe were identified as M. larici-epitea Kleb. or M. ribesii-viminalis Kleb. Moreover, a stem infecting form (SIF), deprived of a sexual stage in its life cycle was reported. The aim of this study was to find out which species of the rust fungi cause disease symptoms on common osier in Poland. The isolates from common osier were compared to the ones originating from its putative hybrids with trembling aspen (Populus tremula L.) and Simon’s poplar (P. simonii Carr.). Fungal isolates were obtained in 2008–2010 from 15 different genotypes of willows, including seven varieties of common osier (4 Swedish and 3 Polish), two landraces of common osier and six putative hybrids with poplars. Fungal isolates originated from three experiment sites, including west (Wielkopolska and Lubuskie) and north-east (Warmia) regions of Poland. To ensure the genetic uniformity, the isolates were derived from single uredinia, obtained from natural infection conditions. In all collected samples the position of uredinia was always hypophyllous. The diameter of uredinia was measured by Sigma Scan Pro software, after inoculation of four standard genotypes, including two common osier and two willow hybrids. The studies proved that the main cause of common osier rust is Melampsora larici-epitea f. typica. All studied isolates, including the ones obtained on putative hybrids, were very similar according to the size of uredinia and the size and morphology of urediniospores. The average size of a uredinium was 1.1 mm diameter and slightly differed between the isolates (from 0.9 to 1.3 mm), depending on willow genotype, the quality of plant material used for artificial inoculations and infection conditions. The average size of a typical urediniospore was 12.4 x 10.5 μm, but the sizes varied from 9.8 to 13.2 μm. Urediniospores from common osier were slightly bigger and more oval (12.5 x 10.4 μm) as compared to spores from the putative hybrids Salix x Populus (12.3 x 10.6 μm), but the differences were statistically insignificant. The spores were ovoid, globoid or angular, evenly echinulated. The size of uredinia, as well as the size and morphology of urediniospores were in full agreement with literature data for M. larici-epitea f. typica.
Źródło:
Acta Agrobotanica; 2010, 63, 2
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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