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Wyszukujesz frazę "halophytic plant" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Dynamics and occurrence patterns of the Tatarian orache Atriplex tatarica L. (Chenopodiaceae) at the roadsides in Warsaw, Poland
Autorzy:
Jarzyna, I.
Malecka, K.
Panufnik-Medrzycka, D.
Medrzycki, P.
Powiązania:
https://bibliotekanauki.pl/articles/57157.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
invasive plant
plant dynamics
occurrence
Tatarian orache
Atriplex tatarica
Chenopodiaceae
roadside
Warsaw city
urban roadside
abundance
halophytic plant
plant competition
annual plant
Polska
Opis:
Atriplex tatarica is an invasive annual plant from Central Asia. It is an early successional species of disturbed habitats, tolerant of a high content of NaCl. It grows also by the roadsides, on lawns by the streets and other places in cities sprayed with salt during snowfalls. The paper presents results of the analysis of abundance and patterns of occurrence of this invasive subhalophytic plant by the roadsides in the Warsaw city. We found that frequency and distribution of Atriplex tatarica increased significantly over the last few decades. The species grows chiefly along main streets which are de-iced. It forms monodominant patches of different length at the zone closest to the street verge. The NaCl concentration there is significantly higher than in the zones more distant from the street verge, although this parameter is very variable. The cover of other species increases with an increasing distance from the roadside verge.
Źródło:
Acta Societatis Botanicorum Poloniae; 2010, 79, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The fungus Epichloe typhina in populations of a halophyte Puccinellia distans: salinity as a possible inhibitor of infection
Autorzy:
Lembicz, M
Olejniczak, P.
Powiązania:
https://bibliotekanauki.pl/articles/56677.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
polymerase chain reaction
choke disease
infection frequency
field experiment
fungi
Puccinellia distans
host plant
halophytic grass
salinity
fungal endophyte
Epichloe typhina
grass
Opis:
Puccinellia distans is a non-agricultural halophytic grass that has become another host plant for Epichloe typhina, hitherto not reported from Poland. In 1992 we noticed the first symptoms of choke disease in a single population of P. distans in central Poland. Since then we have observed choke disease in 5 populations of P. distans only in man-made habitats. These habitats are strongly anthropogenically salinated but they exhibit the pattern of species composition characteristic of natural salines. In this paper we test the hypothesis that the level of salinity affects the infection of P. distans by the fungus E. typhina. Seven plots were established in the field and each plot was divided into 25 subplots. Within each plot the level of infection in a spring generation of shoots was negatively correlated with salinity (common regression within the plots, beta = -0.674, df = 117, p < 0.001). Negative correlation was also found in an autumn generation within the plots (beta = -0.682, df = 94, p < 0.001) after excluding plot P in which the frequency of infected individuals was the lowest and equal only to 0.05. The proportion of individuals infected by the endophytic stage of the fungus in the populations was assessed using diagnostic polymerase chain reaction. The greatest percentage (98.3%) of infected individuals was found in the population growing in the habitat of the lowest salinity. The high salinity reduces the chance of P. distans to become infected, but may promote the stroma formation of E. typhina twice in the season. Disease expression in autumn clearly represents a misadaptation which could be explained by the fact that the species interactions described here appeared relatively recently as a result of human activity. This hypothesis requires further experimental verification.
Źródło:
Acta Societatis Botanicorum Poloniae; 2009, 78, 1; 81-86
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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