Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 9

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  Padus serotina
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Evaluation of root system of seedling of black cherry [Padus serotina L.] depending on seed quality

100%
Bieniek A., Kawecki Z.
Acta Scientiarum Polonorum. Hortorum Cultus
|
2005
|
tom 04
|
nr 1
The assessment of black cherry seedlings root system was carried out at the Didactic-Experimental Establishment of the UWM in Olsztyn in September 2002. The seeds from which the examined seedlings were obtained had been sown into the ground on 2 October 2001. The following seeds were used for the experiment: fresh, sown into the ground immediately after obtaining them from fruit, partly dried seeds and seed sown a month later than in the preceding case as well as physiologically immature seeds and whole fresh fruit. The root systems of seedlings obtained from seeds stored for 1 year and 2 years in open and closed “Twist” type jars at room temperature and in a freezer were also assessed. The largest proportions of seedlings were obtained from seeds stored for 1 year and 2 years in a freezer. The lowest proportions of seedlings were obtained from seeds sown a month later and from whole fresh fruit. In this experiment the most favorable development of the root system was observed in case of seedlings from seeds stored for 2 years in an open jar. The time from picking to sowing of seeds was of little importance. The seedlings from partly dried seeds and later sowing were characterized by the lowest mass of the root system.
2

Valuable tree species in forest stands of the Czech Republic - black cherry

72%
Zeidler A.
Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa
|
2005
|
tom 91
471-478
3

Padus serotina [Rosaceae], a new host plant for some species of parasitic microfungi

72%
Ruszkiewicz-Michalska M., Mulenko W.
Acta Mycologica
|
2003
|
tom 38
|
nr 1-2
4

Competition between sessile oak (Quercus petraea) and black cherry (Padus serotina): dynamics of seedlings growth

58%
Robakowski P., Bielinis E.
Polish Journal of Ecology
|
2011
|
tom 59
|
nr 2
Competition is an evolutionary mechanism which exerts a selection pressure on living organisms. Forest trees compete for light, water and nutrients, especially at a young age. It was observed that the Quercus petraea and Padus serotina natural regenerations occupied the same site growing under the canopy of Scots pine (Pinus silvestris L.). To simulate the competition between young sessile oaks and black cherries found in forest, a controlled experiment was conducted using one-year-old seedlings of both species. There were eight treatments of different competition intensity. The treatments were established varying the number of potted seedlings and adding fresh cherry leaves to the substrate to enhance allelopathic effects. It was hypothesized that black cherry would reduce the height growth and diameter at root collar of sessile oak seedlings and this inhibitory effect would be magnified by an increasing number of cherry seedlings and/or fresh leaves. Black cherry as an invasive, fast-growing species was presumed to win the growth competition with oak. However, the differences in growth parameters would not only depend on genetic differences between the species, but also on the number of competing seedlings in pots and an allelopathic effect of cherry leaves. During the whole vegetative season, each two weeks, the growth parameters of seedlings (height, height increment and diameter at root collar) were measured. The results did not support the hypothesis that cherry had an inhibitory effect on oak growth, at least after one vegetative season. Contrary, a presence of cherry seedlings enhanced the oak height increment (F = 8.6, P <0.001) which might be due to either the strong interspecific competition for light or, less plausibly, positive allelopathic effect, or an interaction of both. Our results indicated a negative auto-allelopathic effect of cherry seedlings and/or fresh cherry leaves on height of cherry seedlings (F = 47.7, P <0.001). This invader showed a continuous and steep height increment within the whole vegetative season, whereas oak seedlings grew rapidly only in July. When compared the mean initial heights in April with those after the bud set in September, cherry was four fold and oak only two fold higher. A very intensive height increment gives black cherry an advantage over sessile oak at a young age which can disturb the spontaneous conversion of pine stands into a mixed pine-oak forest with a greater share of oak and other native deciduous tree species.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Wkraczanie czeremchy amerykańskiej Padus serotina (Ehrh.) Borkh. do olsów i łęgów olszowo-jesionowych

58%
Dyderski M. K., Jagodziński A. M.
Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria
|
2015
|
tom 14
|
nr 2
6

Sulphur in leaves of forest trees and shrubs under long-term influence of urban and industrial air pollution

58%
Nowinski M.
Forestry
|
2000
|
tom 03
7

Fluorine in leaves of forest trees and shrubs under the influence of long-term urban and industrial air pollution

58%
Nowinski M.
Forestry
|
2000
|
tom 03
8

Występowanie roślin obcego pochodzenia w strefie przybrzeżnej Jeziora Charzykowskiego (Zaborski Park Krajobrazowy)

44%
Polak A., Polak P.
Parki Narodowe i Rezerwaty Przyrody
|
2013
|
tom 32
|
nr 1
9

Invasive alien plant species of the southern part of the Nowogard Plain (NW Poland)

44%
Konopska K.
Biodiversity: Research and Conservation
|
2011
|
tom 21
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.