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    Wyświetlanie 1-8 z 8
    Tytuł:
    Choroba więdnięcia sosny
    The pine wilt disease
    Autorzy:
    Filipiak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1013041.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Pinus
    Monochamus
    wektory nicieni
    drzewa iglaste
    ograniczanie wystepowania
    wiedniecie sosny zwyczajnej
    Bursaphelenchus xylophilus
    lesnictwo
    nicienie
    rosliny zywicielskie
    choroby roslin
    choroby inwazyjne
    czynniki chorobotworcze
    sosna
    fitopatologia lesna
    pine wilt disease
    bursaphelenchus xylophilus
    pine wood nematode
    monochamus spp.
    pinus spp.
    Opis:
    The article presents factors which can influence the occurrence the pine wilt disease, i.e. the causative agent of this disease – pine wood nematode, Bursaphelenchus xylophilus, the transmission mechanism of pine wood nematode, the insect vectors – cerambycid beetles of the genus Monochamus, and environmental conditions which favour development of this disease. Furthermore, the methods of prevention of pine wilt disease are discussed.
    Źródło:
    Sylwan; 2008, 152, 12; 9-19
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fusarium spp. na nadziemnych organach zamierających dębów - nowe zagrożenie?
    Fusarium spp. on the above-ground organs of dying oaks – a new threat?
    Autorzy:
    Wit, M.
    Sierota, Z.
    Oszako, T.
    Mirzwa-Mróz, E.
    Wakuliński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/989848.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    fitopatologia lesna
    dab
    Quercus
    zamieranie drzew
    paki
    pedy
    grzyby
    Fusarium
    wystepowanie
    zagrozenia roslin
    oak decline
    fusarium spp.
    Opis:
    Oak decline is insufficiently described problem. Declining oaks are in various age and the most commonly observed symptoms of the disease include growth inhibition and buds mortality. The dieback occurs periodically, mainly because of the impact of abiotic factors (drought, frost and the lowering of the groundwater level). In this complex phenomenon the biological factors, including numerous species of Chromista (Chromalveolata) and fungi play important role as well. The list of pathogens responsible for the dieback includes numerous species of Pythium and Phytophthora, as well as Biscogniauxia, Discula, Pleurophoma, Botryosphaeria and Diplodia. Among other organisms responsible for the oak decline are fungi belonging to Fusarium species. The aim of this study was to investigate the species composition of pathogens colonizing the dying oak buds including undeveloped or dying shoots obtained from Łomża, Rudka and Czarna Białostocka forest districts (eastern Poland). Sampling of symptomatic shoots of Quercus robur L. was performed in 2013, respecting different parts of tree crowns (top, central and bottom). Mycological material for analysis included mycelium growing on dying shoots after incubation in a chamber and tissue collected from symptomatic shoots and placed on PDA medium. For selected isolates of fungi the identification was confirmed by the PCR analysis using ITS1 and ITS4 primers. Among analyzed fungi Fusarium spp., Alternaria alternata, Cladosporium cladosporioides, Botryosphaeria quercuum and /em>Coniothyrium spp. required special attention. The Fusarium spp. group of fungi dominated with an average frequency of 32%. The molecular analysis revealed the presence of several species including Fusarium avenaceum, Cladosporium cladosporioides, Lophiostoma corticola and Nectria mauritiicola.
    Źródło:
    Sylwan; 2015, 159, 05; 403-410
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena liczebności pędraków Melolonthinae w pułapkach trocinowych w uprawach sosny zwyczajnej (Pinus sylvestris L.)
    Assessing the number of Melolonthinae larvae in the sawdust traps in young Scots pine (Pinus sylvestris L.) plantations
    Autorzy:
    Szmidla, H.
    Tkaczyk, M.
    Małecka, M.
    Sierota, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/986677.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ochrona lasu
    uprawy lesne
    sosna zwyczajna
    Pinus sylvestris
    pulapki trocinowe
    szkodniki roslin
    Melolonthinae
    pedraki
    liczebnosc
    melolontha spp.
    young forest plantations
    root−pest monitoring
    Opis:
    Root−feeding insects are an increasingly studied group of herbivores, whose impact on plant productivity and are some of the most damaging forest pests in Europe. Due to the mass feeding on the roots of seedlings and older trees in young plantation and stands, Melolonthinae larvae are classified as pests, which are the most dangerous on the land dedicated to afforestation. The research was located in the Wyszków Forest District (52°43'15' N; 21°39'03' E) on the mixed coniferous and mixed deciduous forest habitats. This study evaluated sawdust traps as the method for assessing abundance of Melolonthinae larvae in Scots pine plantations established artificially from open nursery, container production, and from natural regeneration. In spring 2015 i) ‘small sawdust pits’ in rows between seedlings, and ii) pits without soil in adjacent inter−rows as control were prepared. In spring and autumn 2016, and in spring 2017 sawdust and soil from both variants of pits were sieved and Melolonthinae larvae were counted and compared. The obtained results were analyzed in two ways. The first analysis compared the occurrence of grubs in small pits with or without sawdust, while the other one analysed influence of the time of making small pits, independently for the variant with or without sawdust. The final stage was to compare the number of Melolonthinae larvae in small pits between the origin of the seedlings. We found a greater number of grubs in spring assessment than in autumn. Both kinds of small pits showed higher number of Melolonthinae larvae when compared to traditional method of ‘great pits’. The number of Melolonthinae larvae was significantly higher on the plots with container seedlings than the others. The conceptual assumptions of this alternative and environmentally safe method of ‘sawdust traps’ seems to be optimistic.
    Źródło:
    Sylwan; 2018, 162, 07; 590-597
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Występowanie Phytophthora cactorum na jarząbie zwyczajnym (Sorbus aucuparia) w szkółkach leśnych
    The occurrence of Phytophthora cactorum on rowan (Sorbus aucuparia) in forest nurseries
    Autorzy:
    Orlikowski, L.B.
    Duda, B.
    Oszako, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1023374.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wystepowanie
    grzyby
    czynniki chorobotworcze
    Phytophthora cactorum
    szkolki lesne
    Sorbus aucuparia
    lesnictwo
    jarzab pospolity
    drzewa lesne
    fitopatologia lesna
    phytophthora spp.
    inoculation
    rowan
    disease
    stem necrosis
    isolation
    Opis:
    Phytophthora cactorum was isolated from about half of the rowan seedlings taken from 2 nurseries. Additionally, Botrytis cinerea and Fusarium solani were found in diseased tissues. In laboratory trials, the pathogen colonized plants of the family Rosaceae, and most especially Prunus avium, Pyrus communis and Rosa canina, as well as Alnus glutinosa, Betula verrucosa and coniferous plants. In a greenhouse trial, isolates from rowan and rhododendron were found to cause necrosis of the stem base, with a rate of disease spread of about 1.3 mm/24 h.
    Źródło:
    Sylwan; 2004, 148, 10; 67-72
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zagrożenie szkółek i drzewostanów, ze szczególnym uwzględnieniem olszy przez gatunki z rodzaju Phytophthora
    Autorzy:
    Oszako, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1022006.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    grzyby
    czynniki chorobotworcze
    drzewostany
    zagrozenia roslin
    szkolki lesne
    Phytophthora
    lesnictwo
    olsza czarna
    Alnus glutinosa
    drzewa lesne
    fitopatologia lesna
    phytophthora spp.
    nurseries
    stands
    oak
    alder
    damage
    Opis:
    Many pathogenes of Phytophthora genera (P. cactorum, P. citricola, P. cinnamomi and P. citrophthora) are present in the forest and ornamental nurseries all over the Europe. They cause serious disease of many of forest tree species (f.ex. alder, oak and beech). Infected seedlings in nurseries when planted along river plantations are the main source of infection which spread further down of the stream. More research about this phenomen is needed in Poland.
    Źródło:
    Sylwan; 2005, 149, 06; 55-61
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rodzime i egzotyczne żerdzianki, Monochamus spp. (Coleoptera, Cerambycidae) jako wektory węgorka sosnowca, Bursaphelenchus xylophilus
    Native and exotic sawyer beetles, Monochamus spp. (Coleoptera, Cerambycidae) as the vectors of the pine wilt nematode, Bursaphelenchus xylophilus
    Autorzy:
    Kozłowski, M.W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1024346.pdf
    Data publikacji:
    2003
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    wektory nicieni
    Monochamus
    szkodniki roslin
    owady
    entomologia lesna
    Bursaphelenchus xylophilus
    lesnictwo
    zerdzianka
    wegorek sosnowiec
    zamieranie drzew
    monochamus spp.
    natives vector
    exotic vectors
    bursaphelenchus xylophilus
    pine stands
    damage
    Opis:
    A review of present knowledge on the sawyer beetles, Monochamus spp. as the potential and actual vectors of, Bursaphelenchus xylophilus is given. The pine wilt nematode (PWN) can cause considerable damage of pine stands in Europe if it were imported here (lately appeared in Portugal) and distributed throughout the area. This may be accomplished by the natural vectors of the PWN – the pine sawyer beetles: (1) exotic, imported with the wood or (2) native, that had contacted the infected wood. Regarding these scenarios, biology, distribution and known relations to Bursaphelenhus nematodes are given. It is concluded, that despite the vector potential of native and exotic sawyer beetles, the pine wilt nematode will meet climatic obstacle to develop in central and northern Europe.
    Źródło:
    Sylwan; 2003, 147, 01; 24-34
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ryzyko masowego występowania pędraków chrabąszczy (Melolontha spp.) w strefie ekotonowej drzewostanów dojrzałych na terenie Nadleśnictwa Lubaczów
    Risk of the mass occurrence of cockchafer (Melolontha spp.) grubs in the ecotone of mature stands in Lubaczow Forest District
    Autorzy:
    Niemczyk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989889.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany dojrzale
    ekotony
    ekoton las-laka
    szkodniki roslin
    chrabaszcz majowy
    Melolontha melolontha
    chrabaszcz kasztanowiec
    Melolontha hippocastani
    pedraki
    wystepowanie masowe
    ryzyko wystapienia
    regresja logistyczna
    Nadlesnictwo Lubaczow
    melolontha spp.
    forest−meadow ecotone
    mature stand
    logistic regression
    Opis:
    This study evaluated the environmental risk drivers affecting the occurrence of cockchafer grubs in mature stands bordering with open spaces. The following factors were taken into the consideration: the distance from the edge towards the forest interior, the forest site type, species composition, canopy openness and the cover of forest floor with vegetation as well as cutting treatment in some of the investigated stands. In one of the biggest cockchafer outbreak centers in Poland (Lubaczów Forest District; SE Poland) 6 mature stands were chosen and estalished 5 transects in each of them. Each transect was 250 m long and consisted of 6 pits (1×0.5×0.5 m) in a regular distance of 50 m with the first pit on an open space bordering with forest. Pits were used to determine the grub infestation of the soil. In the area of 100 m² around the pit, the general vegetation cover and tree species composition of a stand were characterized. The forest light environment was defined by hemispherical photography. The distance in transect and the fact that stand was harvested were also taken into consideration. The applied logistic regression model demonstrated that the site fertility is the most important factor that significantly increases the risk of cockchafer grubs occurrence. The other characteristics that also cause that stand is more attractive for the cockchafer grubs are: participation of the broadleaved species in stand composition and the dense vegetation cover. Furthermore, the cockchafer grubs occurrence was more frequent in the forest interior than in an open space or at the forest−meadow ecotone.
    Źródło:
    Sylwan; 2015, 159, 04; 326-335
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stan zdrowotny i zróżnicowanie genetyczne buka zwyczajnego w Nadleśnictwie Siewierz na podstawie analiz chloroplastowego DNA
    Health condition and genetic differentiation level of beech in the Siewierz Forest District assessed with cpDNA markers
    Autorzy:
    Nowakowska, J.A.
    Oszako, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1013561.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    zroznicowanie genetyczne
    cpDNA zob.DNA chloroplastowy
    drzewa zdrowe
    podatnosc na choroby
    czynniki genetyczne
    lesnictwo
    Phytophthora
    drzewa chore
    Nadlesnictwo Siewierz
    czynniki chorobotworcze
    grzyby
    buk zwyczajny
    fytoftoroza
    stan zdrowotny drzew
    DNA chloroplastowy
    Fagus sylvatica
    drzewa lesne
    fagus sylvatica
    chloroplast dna markers
    heterozygosity level
    phythopthora spp.
    Opis:
    Beech decline phenomenon has been observed in Poland since the 1980s. The reasons are still unclear but the discovery of pathogens genus Phytophthora shed a new light on it. Stems as well as roots of beech trees were severely affected by P. citricola and P. cambivora. In order to find out the genetic background of infection, three loci of chloroplast microsatellite DNA were investigated in the genetic differentiation study of beeches growing in the Siewierz Forest District in Poland. Parameters of genetic diversity (h Nei) and differentiation (GST) in the chloroplast genome were estimated and compared between healthy and damaged trees. Healthy beeches were more heterozygous (h=0.243) than the damaged ones (h=0.113), and the distribution of cpDNA alleles was different between these two groups. Healthy trees were nearly 50% more genetically diversed than declining ones.
    Źródło:
    Sylwan; 2008, 152, 09; 11-20
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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