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    Wyświetlanie 1-3 z 3
    Tytuł:
    Pollen morphology of Polish species of the genus Rosa - I. Rosa pendulina
    Autorzy:
    Wronska-Pilarek, D
    Lira, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/40988.pdf
    Data publikacji:
    2006
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Rosa
    Alpine rose
    Rosa pendulina
    Polish species
    pollen morphology
    variability
    multivariate analysis
    Opis:
    The morphology and variability of pollen of Rosa pendulina L. were studied. The material came from 10 native localities of this species. 300 pollen grains were examined. It was established that the diagnostic features of pollen grains of R. pendulina L. were: an elongated, narrow operculum, a poorly developed exine sculpture, long ectocolpi (a low value of the apocolpium index), and the predominance of grains elongated in shape. The results obtained usually correspond to data supplied by other palynologists. A statistical analysis of 10 quantitative grain characteristics showed their variability to be rather low. The highest variability was found to occur in two traits connected with d (the distance between the apices of two ectocolpi). Statistical studies revealed dependences among the grains from the 10 analysed localities
    Źródło:
    Dendrobiology; 2006, 55; 65-73
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of rooting preparations on protein, chlorophyll and carotenoid content in leaves of Rosa gallica 'Duchesse d'Angouleme' cuttings
    Autorzy:
    Monder, M.J.
    Niedzielski, M.
    Wolinski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/41733.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    rooting preparation
    protein content
    chlorophyll content
    carotenoid content
    leaf
    Rosa gallica
    Duchesse d'Angouleme cultivar
    rose
    rhizogenesis
    leaf senescence
    shoot
    maturity
    Opis:
    Popularisation of historical rose cultivars is important for overall increase of biodiversity within currently available assortment, however their vegetative propagation is rather difficult. Possible scenario behind it is that commonly used one-bud leafy cuttings have limited storage capacity due to the small size of the stem. We hypothesised that the treatment of cuttings this rose with rooting preparations would positively affect on the condition of their leaves. We tested the effect of preparations based on seaweed extracts (Bio Rhizotonic, Root Juice, Bio Roots) as well as commonly used root stimulants (Ukorzeniacz Aaqua and Ukorzeniacz Baqua containing 0,4% IBA or 0,2% NAA respectively) on the viability potential of the Rosa ‘Duchesse d’Angoulême’ cuttings. We have monitored the senescence process in leaves by the total soluble protein, chlorophyll and carotenoid content measurements. In order to test the potential effect of the mother plant and timing of shoots acquirement cuttings for the experiment were taken from mother plants at four different maturity stages (flower buds closed; all flowers open; just after petal fall and 7–14 days after petal fall). As expected the amount of the measured components in mother plants varied in individual phases of shoot maturity. This feature influenced the positive effect of rooting stimulants on cuttings viability. The most striking effects were in rooted cuttings derived from shoots collected just after flower petal fall. Observed increase in soluble protein and chlorophyll content did not correlate however with the percentage of obtained rooted cuttings. Based on that we can speculate that the biological basis of observed positive effect of natural rooting preparations on the ‘Duchesse d’Angoulême’ rose is complex and does not rely on the delay or inhibition of senescence process.
    Źródło:
    Dendrobiology; 2014, 72
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anatomical study on the developing pericarp of selected Rosa species (Rosaceae)
    Autorzy:
    Guzicka, M.
    Zielinski, J.
    Tomaszewski, D.
    Gawlak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41015.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    plant anatomy
    developing pericarp
    pericarp
    structure
    wild plant
    rose
    Rosa
    Rosaceae
    SEM analysis
    CLSM zob.confocal laser scanning microscopy
    confocal laser scanning microscopy
    lignification
    achene
    Opis:
    Results of anatomical studies on the developing pericarp of selected wild roses are presented. Using SEM and CLSM, the changes in the pericarp structure of 5 species have been observed during its formation, from the flowering stage to fully ripe achenes. In the morphological development of the pericarp of Rosa species two main phases can be distinguished: the phase of intensive growth of the pericarp during which the fruit achieves its final shape and volume, and the subsequent phase of pericarp ripening when no significant morphological changes in the pericarp occur. Similarly, in the process of the anatomical development of the pericarp two phases are noticeable, however, during both stages, great internal changes proceed in the fruit. The first phase consists of intensive cell divisions and enlargement, gradual thickening of cell walls and formation of all pericarp layers. Due to these changes, the pericarp achieves its final anatomical structure. The second phase, involving the pericarp ripening, is manifested in the modification of cell walls, mainly by their quick thickening, but first of all by their lignification. The lignification of pericarp cell walls begins in the inner endocarp; it proceeds in the outer endocarp, later in mesocarp and finishes in the hypodermal cells of the exocarp. The epidermal cells remain alive the longest and their walls do not (or hardly) become lignified. The death of all cells finishes the pericarp ripening.
    Źródło:
    Dendrobiology; 2012, 68
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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