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    Wyświetlanie 1-3 z 3
    Tytuł:
    Zagrożenie szkółek pojemnikowych roślin ozdobnych przez Phytophthora spp. w minionym piętnastoleciu
    The menace of hardy ornamental nursery stocks by Phytophthora spp. in the last 15 years
    Autorzy:
    Orlikowski, L.
    Szkuta, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1013547.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wystepowanie
    choroby roslin
    rosliny iglaste
    straty
    czynniki chorobotworcze
    rosliny wrzosowate
    rosliny lisciaste
    zagrozenia roslin
    fytoftoroza
    Phytophthora
    szkolki roslin ozdobnych
    nursery
    isolation
    phytophthora
    coniferous
    ericaceaous and deciduous plants
    source of inoculum
    water
    Opis:
    Eight Phytophthora species were recovered from diseased ornamental plants taken from 46 hardy nursery stocks. P. cinnamomi was mainly isolated from rotten stem bases of coniferous and ericaceous plants. P. citricola was detected from rotten stem bases but mainly from diseased leaves and stem parts. Losses caused by that group of pathogens varied from 1 to 50%.
    Źródło:
    Sylwan; 2008, 152, 09; 44-50
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fosforyny jako czynnik ograniczający zamieranie drobnych korzeni w drzewostanach dębowych Płyty Krotoszyńskiej
    Phosphites as factor limiting the fine root damage in oak stands from Krotoszyn Plateau
    Autorzy:
    Oszako, T.
    Nowaszewski, M.M.
    Szulc, W.
    Rutkowska, B.
    Nowakowska, J.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/985975.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    dab
    Quercus
    choroby roslin
    fytoftoroza korzeni
    zamieranie debow
    czynniki ograniczajace choroby roslin
    fosforyny
    RDLP Poznan
    Plyta Krotoszynska
    drzewostany debowe
    opryski lotnicze
    oak decline
    quercus robur l.
    phytophthora
    phosphites
    rdlp poznań
    Opis:
    Oak decline phenomenon has been observed in Poland in the 1980s. Especially, Krotoszyn Forest District was affected in the years 1982−1984, when oaks were dying in a mass extend causing economic and ecological problems. Twenty five years later many Phytophthora species were isolated from rhizosphere soil suggesting their important role in fine root damage. This research was focused on application of fertilisers increasing oak resistance to soil−borne pathogens. In total, 60 soil samples were collected c.a. 1 meter from trunks of oaks representing control and treated variant with Actifos® and Kalex® fertilisers. The fine root parameters (smaller than 2 mm) were evaluated with the water scanner and WinRhizo software. The same soil samples were analysed for the presence of macro− (N, P, K, Ca, Mg) and microelements (Al, Cu, Fe, Mn, Na, Zn). The use of ammonium and potassium phosphites in the form of foliar spray had a beneficial effect on the health of oak stands (Quercus robur L.) in the Krotoszyn Forest District. Three parameters: defoliation (ICP Forest), vitality according to Roloff method and synthetic index of damage were applied in order to evaluate the status of oaks health. Two aforementioned crown parameters were obtained from visual assessment from the ground, while the synthetic index of damage was calculated according to the formula developed by Dmyterko and Bruchwald. The parameters of fine roots after treatments, especially their number, length and surface improved. Trees with better quality fine roots had more chance to survive in unfavourable environmental conditions like drought. Phosphite treatments of oak stand positively influenced the chemical properties of soil, decreased acidity, but increased availability of Zn for plants, and probably reduced root damage by toxic aluminium ions. An improvement in the health of fine roots (that were saved by phosphites from damage caused by pathogenic species of Phytophthora genus present in the soil) will have a positive effect on the reconstruction of crown architecture (shoots development from dormant buds).
    Źródło:
    Sylwan; 2018, 162, 10; 819-827
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Patogenne lęgniowce z rodzaju Phytophthora - nowe zagrożenie lasów w Europie
    Pathogenic oomycetes of Phytophthora genus - a new threat to forests in Europe
    Autorzy:
    Ajchler, M.
    Łobocka, M.
    Oszako, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/986789.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    fitopatologia lesna
    zagrozenia drzewostanow
    czynniki chorobotworcze
    legniowce
    Oomycetes
    Phytophthora
    fytoftoroza
    identyfikacja
    epidemiologia
    Phytophthora alni
    Phytophthora cactorum
    Phytophthora cambivora
    Phytophthora cinnamomi
    Phytophthora citrophthora
    Phytophthora quercina
    Phytophthora plurivora
    Phytophthora ramorum
    ochrona lasu
    zwalczanie chorob roslin
    oomycetes
    phytophthora
    molecular typing
    plant pathogens
    biocontrol
    Opis:
    Pathogenic oomycetes represented mainly by the species of Phytophthora genus are among the most dangerous plant pathogens. They pose a serious threat for agricultural as well as wild plants, and are involved in forest decline worldwide. Over 140 pathogenic Phytophthora species have been identified so far. The common infection symptoms include rotting of below− and above− ground parts of plants, causing weakness and slow decline of infected trees. The economic losses caused by certain Phytophthora species may rich even 100%. Globalization and border opening have facilitated the transport of plant material between countries and continents, thus increased the risk of transfer of various Phytophthora genus representatives to new geographical locations. Global warming (e.g. mild winters) have facilitated the expansion of species from southern to northern Europe. Among Polish Phytophthora isolates are species that have previously been known only in nurseries (e.g. P. cactorum), but nowadays they are also isolated from forests (e.g. oak stand in the Krotoszyn Plateau). It suggests the pathway from nurseries to stands with plant for plantings and attached soil. There are also new species, that have not been isolated so far in the world (P. polonica) or found far away from Poland (P. fragaliaefolia in Japan on strawberry). The possible natural pathways are birds and water courses. In Mazowsze and Wielkopolska regions (C and W Poland) the polyphagous P. cinnamomi was found on pedunculate oaks (Quercus robur). This species causes significant damage to red oak forest in France, but also threats Jarrah forests in the Australian ecosystem (it attacks ca. 1000 species of plants). Fortunately, in addition to time consuming and laborious classic methods of Phytophthora identification, based on morphology and physiological properties, molecular methods that are based on immunological tests and chromosomal or mito− chondrial DNA markers identification have come into common use. Despite morphological similarity to true fungi, oomycetes are more closely related to diatoms and brown algae, and have several structural features that differentiate them from fungi, including the cell wall composed of cellulose instead of chitin. That is one of the reasons that fungicides have a limited use in the fight with Phytophthora infections. Additionally, type of ecological niches that are settled by pathogenic oomycetes (root remnants in soil, watercourses) hinders the chemical combating. Biocontrol, i.e. the use of interspecies interactions between microorganisms (bacteria, fungi) to limit the growth and development of pathogens, seems to be a reasonable alternative.
    Źródło:
    Sylwan; 2017, 161, 10; 870-880
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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