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    Wyświetlanie 1-6 z 6
    Tytuł:
    Chalara fraxinea - nowo opisany gatunek grzyba na zamierających jesionach w Polsce
    Chalara fraxinea - new described fungus species on dying ash in Poland
    Autorzy:
    Kowalski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1015977.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    objawy chorobowe
    grzyby
    czynniki chorobotworcze
    jesion
    Chalara fraxinea
    lesnictwo
    Fraxinus
    drzewa lesne
    fitopatologia lesna
    fraxinus excelsior
    chalara fraxinea
    wilting
    dieback
    Opis:
    The paper provides the characteristics of the fungus Chalara fraxinea which may enable its identification. The disease symptoms on ashes regularly accompanied by this fungus were specified. Possible casual relationship between Ch. fraxinea and ash dieback is discussed in the paper.
    Źródło:
    Sylwan; 2007, 151, 04; 44-48
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozprzestrzenienie grzyba Chalara fraxinea w aspekcie procesu chorobowego jesionu w Polsce
    Expanse of Chalara fraxinea fungus in terms of ash dieback in Poland
    Autorzy:
    Kowalski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1009704.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wystepowanie
    grzyby
    czynniki chorobotworcze
    rozprzestrzenianie sie grzybow
    jesion wyniosly
    Chalara fraxinea
    Fraxinus excelsior
    lesnictwo
    drzewa lesne
    fitopatologia lesna
    chalara fraxinea
    fraxinus excelsior
    dieback
    Opis:
    Paper presents the results of the research performed in years 2000−2008 on the occurrence of Chalara fraxinea fungus on ashes with dieback symptoms. Abundance of that species was observed on ashes in all analysed forest districts and national parks. Different frequency of infection of various Fraxinus excelsior organs and tissues was pointed out.
    Źródło:
    Sylwan; 2009, 153, 10; 668-674
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zamieranie jesionu - aspekty taksonomiczne sprawcy choroby
    Ash dieback - taxonomical aspects of the disease causal agent
    Autorzy:
    Kowalski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1006690.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    fitopatologia lesna
    drzewa lesne
    jesion wyniosly
    Fraxinus excelsior
    zamieranie drzew
    czynniki chorobotworcze
    grzyby
    Chalara fraxinea
    Hymenoscyphus albidus
    Hymenoscyphus pseudoalbidus
    hymenoscyphus albidus
    h. pseudoalbidus
    chalara fraxinea
    fraxinus excelsior
    dieback
    Opis:
    The paper presents recent results of the research on the main causal agent of ash dieback, previously known to occur only in the anamorphic stage as Chalara fraxinea. The presented research enabled to detect the presence of two fungal species on ashes: Hymenoscyphus pseudoalbidus and H. albidus s. str. Their morphological characteristics, life cycle and causal relationship between the fungi and ash dieback were also discussed.
    Źródło:
    Sylwan; 2012, 156, 04; 262-269
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphologial variation in colonies of Chalara fraxinea isolated from ash (Fraxinus excelsior L.) stems with symptoms of dieback and effects of temperature on colony growth and structure
    Zróżnicowanie morfologiczne kolonii Chalara fraxinea wyizolowanych z jesionów (Fraxinus excelsior L.) z objawami zamierania oraz wpływ temperatury na ich wzrost i strukturę
    Autorzy:
    Kowalski, T.
    Bartnik, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/28411.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    morphological variation
    colony
    Chalara fraxinea
    isolation
    ash
    Fraxinus excelsior
    stem
    dieback symptom
    temperature effect
    colony growth
    colony structure
    Opis:
    The present paper presents the results of long-term observations of differences in growth and morphology of colonies of C. fraxinea isolated from ash stems with symptoms of dieback and the results of studies on effects of temperature on growth and morphology of colonies in vitro. Thirty randomly chosen C. fraxinea cultures, originating from six Forest Districts in southern and northern Poland, viz. Andrychów, Gryfice, Kańczuga, Lębork, Miechów and Mircze, were included in the temperature assay. Colony growth and morphology were evaluated in vitro, on malt extract agar. Two replicates of each isolate were incubated at 5, 10, 15, 20, 25 and 30oC in darkness. Colonies of C. fraxinea isolated from necrotic stem tissues of diseased ash trees differed greatly in colour, structure, growth rate, presence of sectors and stromata as well as the intensity of conidial sporulation. Colony characters were often lost in further sub-cultures grown on the same medium. Colonies of C. fraxinea grew at 5-25oC in vitro. Three isolates still grew, though slowly, at 30oC. The optimum temperature for growth was 20oC. Among 30 isolates tested, five grew most quickly at 25oC and four at 15oC. Differences among colony diameters recorded at 5, 10, 15, 20 and 30oC were statistically significant, while differences at 15 and 25oC were not. At some temperatures, statistically significant differences in growth rate were related to the origin of the isolates. There were three main colony colour types. Temperature was the main factor affecting colony morphology in vitro. The formation of sectors was observed in 36% of colonies, pseudoparenchymatous stromata in 10.4% of colonies, and white crystalline substances in 53.3% of colonies. The results of in vitro observations were used for discussion of the effects of temperature on growth and activity of C. fraxinea in vivo.
    Źródło:
    Acta Agrobotanica; 2010, 63, 1
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Występowanie i proces rozprzestrzeniania się Chalara fraxinea na jesionie wyniosłym (Fraxinus excelsior L.) na terenie wybranych krajów Europy Północnej
    Occurrence and spread of Chalara fraxinea on common ash (Fraxinus excelsior L.) in the selected countries of Northern Europe
    Autorzy:
    Turczański, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/989540.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    jesion wyniosly
    Fraxinus excelsior
    zamieranie drzew
    czynniki chorobotworcze
    grzyby
    Chalara fraxinea
    wystepowanie
    rozprzestrzenianie sie chorob
    Wielka Brytania
    Irlandia
    Dania
    Szwecja
    ash dieback
    united kingdom
    ireland
    denmark
    sweden
    Opis:
    Dieback of common ash is a worrying phenomenon that emerged in the early 1990s. The first symptoms were observed in 1992 in Poland. In 1996 the plague appeared in Lithuania, followed by Germany, Denmark, Czech Republic, Austria, Slovenia, Sweden and France (2002−2009), to finally reach the British Isles in 2012. At the beginning it was said about the disease of ash, but a few years later it became the issue of ash dieback. Despite many research and the cause identification, the problem still exists. The aim of article is to show the overall picture and the prior knowledge of the phenomenon on the example of four Northern European countries: Great Britain, Ireland, Denmark and Sweden. Considerations were mainly focused on the UK and Ireland, which because of the insular location are an area of slower spread of the Chalara fraxinea – fungus considered to be the one of the main factors responsible for ash disease. Moreover, the selection is determined by the weather and habitat conditions where the described species have their optimum range. To the contrast, Denmark and Sweden were mentioned also. The described species has a much worse state of health in that countries. In order to describe the current state of the spread of ash dieback, we selected official documents and factsheets available on the government websites. In case of described countries, quick response and proper identification of the cause of ash dieback allowed to take appropriate steps to fight Chalara fraxinea before the disease has spread in the local population. Appropriate government regulation, cooperation with local forest owners, education and action plans at the moment seems to function properly especially in Great Britain and Ireland. Quite other conditions are in the countries of the continental Europe, including Poland, Lithuania, Denmark and Sweden, where the fungus had made quite large losses in stands of common ash long before it was determined the main cause of this phenomenon. Undoubtedly a huge role in the rapid spread of the pathogen has a geographical location and quick response on the disease.
    Źródło:
    Sylwan; 2016, 160, 07; 539-546
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Symptomy chorobowe i grzyby na zamierajacych jesionach [Fraxinus excelsior L.] w drzewostanach Nadlesnictwa Staszow
    Disease symptoms and fungi on dying ash trees [Fraxinus excelsior L.] in Staszow Forest District stands
    Autorzy:
    Kowalski, T.
    Czekaj, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/45557.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    Nadlesnictwo Staszow
    stan zdrowotny drzew
    jesion wyniosly
    Fraxinus excelsior
    objawy chorobowe
    grzyby
    Alternaria alternata
    Botryosphaeria stevensii
    Chalara fraxinea
    Cytospora pruinosa
    Diaporthe
    Didymosphaeria acerina
    Fusarium lateritium
    Massaria
    Phomopsis scobina
    Phomopsis
    Pezicula cinnamomea
    Źródło:
    Leśne Prace Badawcze; 2010, 71, 4; 357-368
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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