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The research was carried out within three forest-park complexes located in the south-western part of the Poznań city, which once had the status of ecological uses. The aim of the work was to inventory a dendroflora for the selection of trees with monumental dimensions. In addition, changes in the participation of monumental trees in local vegetation over the last 12 years had been analysed. During...
The aim of this study was to determine the current status of the population of marsh helleborine at a locality in the Wielkopolska National Park. Variability in generative shoots was analysed. Recorded results were compared with a study published in the 1990's, in which this locality was described. Since that time the area covered by that population has decreased; nevertheless, it exhibits characteristics...
The subject of the research was the population of orchid growing in the area of Pierzchno in Wielkopolska. This position was found in 2001 where two kinds of orchids were recorded – Orchis morio and Dactylorhiza majalis. Male orchid occurs in the particular position in this geographical region. Quite numerous population of Dactylorhiza majalis (broad-leaved marsh orchid) and counting only a few specimens...
During the last 10 years (2005–2014) the population of Epipactis palustris within the former ecological use “Kopanina 1” was observed five times. In subsequent years, on the area of 4400 m2 at least 1000 to more than 4000 ramets were noted. The ramets in generative phase of development always predominated. It might indicate good condition of the population. The highest density per unit of area was...
The object of the work was population of spiny restharrow (Ononis spinosa) growing within the previous ecological site “Kopanina I” in the south-western part of Poznań. In total 67 specimens were found on the area of 825 m2. About half of them were in phase of flowering. Most of plants grew in clusters. They were a component of the meadow plant community of Molinio-Arrhenatheretea class with different...
Celem pracy było zbadanie zmienności pyłku u czterech typów odmian lnu zwyczajnego. Zmierzono długość osi biegunowej i równikowej ziaren pyłku oraz określono ich kształt. Największe ziarna miała odmiana oleista, a najmniejsze – odmiany włókniste. Wartości współczynników zmienności cech były niskie. Analiza wariancji wykazała, że odmiany różniły się istotnie pod względem badanych cech. Cechy korelowały...
Celem pracy było wykazanie zmienności morfologicznej różnych typów odmian lnu zwyczajnego. Przebadano nasiona czterech odmian: oleistej, włóknistej pośredniej i ozdobnej. Doświadczenia prowadzono w latach 2005 i 2008, różniących się warunkami pogodowymi. Analizowano wielkość nasion oraz ich liczbę w torebce i MTN. W latach badań największe nasiona miała odmiana ozdobna, cechowała się też ona najmniejszą...
In recent years extensive attention has been given to the Rubus genus, but knowledge on the ecology of most of its species, including rhythmic development, is still insuffi cient. Such data may have practical applications, since blackberry species are economically important. The goal of the study was to analyse phenology and growth rate of vegetative and generative stems in 10 Rubus species of different...
Leaves from generative and vegetative shoots of Rubus capitulatus and R. kuleszae of Corylifolii section were investigated. The study was to demonstrate the variability of leaves of both types of shoots, and at the same time an examination on the contents of polyphenols and phenolic acids in their blades carried out. Selected blade traits, such as was: length, width, elongation, perimeter, dissection...
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