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Wyszukujesz frazę "Viscum" wg kryterium: Temat


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Tytuł:
Jemioła jako zagrożenie dla zdrowotności drzewostanów iglastych
Mistletoe as a threat to the health state of coniferous forest
Autorzy:
Iszkuło, G.
Armatys, L.
Dering, M.
Ksepko, M.
Tomaszewski, D.
Ważna, A.
Giertych, M.J.
Powiązania:
https://bibliotekanauki.pl/articles/979023.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany iglaste
Viscum album
leśnictwo
zagrożenia drzewostanów
rośliny pasożytnicze
jemioła pospolita
porażenie drzew
występowanie
oddziaływanie na rośliny
parasitic plant
infestation
biotic forest disturbance
Opis:
The forest area infected by mistletoe (Viscum album L.) in Europe has been increasing in recent years. The highest potential threat is posed by Viscum album subsp. austriacum, a parasite of Pinus sylvestris, and V. album subsp. abietis, a parasite of Abies alba. The paper presents a literature review related to biology, ecology and possible methods of limiting the negative impact of mistletoe on forest management. The vast majority of studies indicate that the presence of mistletoe negatively affects the growth as well as defensive and reproductive capabilities of trees. Due to the wasteful water management of the parasite, infected trees are particularly vulnerable to weakening during periods of drought. Mistletoe is a heliophilous taxon and forest breeding treatments should reduce light intensity in the forest canopy. Foresters should resign from leaving individual and group seed trees in forest stands inhabited by mistletoe after the cuts, because they may be a source of seeds for the parasite invasion to the neighboring stands. The most effective method against mistletoe is cutting out the infected trees. However, removal of individual trees in forest stand may be difficult, because the most often they are the dominant and hence the most vulnerable trees in the forest management. Mistletoe is also noticeable when the number of infected trees is already very large and they cannot be removed without disturbing the stability of the forest stand. Therefore, there is an urgent need to develop methods for monitoring stands for early detection of threat. Remote sensing methods can be very useful. It is also necessary to develop management strategies with mistletoe infected stands.
Źródło:
Sylwan; 2020, 164, 03; 226-236
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ jemioły (Viscum album) na jakość nasion sosny zwyczajnej (Pinus sylvestris)
Influence of mistletoe (Viscum album) on the quality of Scots pine (Pinus sylvestris) seeds
Autorzy:
Jasiczek, N.
Giertych, M.J.
Suszka, J.
Powiązania:
https://bibliotekanauki.pl/articles/987164.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Nadlesnictwo Bolewice
drzewostany nasienne
drzewa lesne
sosna zwyczajna
Pinus sylvestris
nasiona
jakosc nasion
kielkowanie nasion
wielkosc szyszek
produkcja nasion
czynniki biotyczne
polpasozyty
jemiola
Viscum album
seed quality
germination
seed production
semiparasite
cone size
Opis:
Mistletoe is semiparasite adversely affecting the functioning of their hosts especially at water management level. So far, there have been no reports about the impact of mistletoe on seeds from any host. The aim of the work was to evaluate the effect of the presence of mistletoe on the quality of the seeds of Scots pine (Pinus sylvestris). Unopened cones from infected and uninfected trees were collected in April 2015 in the Excluded Seed Stand in Bolewice Forest District (52°2354.347N; 16°0501.978E). Measurements of cones and seeds were made. Some seeds were used for pot experiment, where the seedlings were planted from May to October 2015. On the second part of the seeds in the end of July and August germination tests were made. The size and mass of the cones, the number and weight of seeds, and the height and weight of the seedlings were lower for the material collected from the mistletoe trees. The differences were not large but statistically significant (tabs. 1 and 2). The results showed that mistletoe has a negative impact on the parameters of cones, seedlings and seeds quality.
Źródło:
Sylwan; 2017, 161, 07; 558-564
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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