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  • Occurrence of fungi of the genus Alternaria on leaves and siliques of oilseed rape with symptoms of Alternaria black spot.

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    Foreign Title : Występowanie grzybów z rodzaju Alternaria w liściach i łuszczynach rzepaku z objawami czerni krzyżowych.

    Author(s) : Jajor, E.Korbas, M.

    Author Affiliation : Instytut Ochrony Roślin - Państwowy Instytut Badawczy w Poznaniu, Poznan, Poland.

    Author Email : e.jajor@iorpib.poznan.pl

    Journal article : Rośliny Oleiste 2012 Vol.33 No.2 pp.185-200 ref.23

    Abstract : Alternaria black spot is caused by fungi of the genus Alternaria. Disease symptoms include different types of spots. The aim of the study was to assess composition of the population of fungi of the genus Alternaria on leavesleavesSubject Category: Anatomical and Morphological Structures
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    and siliques of oilseed rape with symptoms of Alternaria black spot. The experiments were carried out in the Field Experimental Station of the Institute of Plant Protection - National Research Institute in Winna Góra (Great PolandpolandSubject Category: Geographic Entities
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    region) on three cultivarscultivarsSubject Category: Organism Groups
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    of oilseed rape in the years 2006-2009. In the study two variants were tested - treated with Sportak 450 EC (prochlorazprochlorazSubject Category: Chemicals and Chemical Groups
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    450 g/l) and untreated. Leaves and siliques with symptoms of Alternaria black spot were collected from both variants. Phytophysiological assessment included three types of symptoms of Alternaria black spot, i.e. spots: concentric (concentrically zoned, grey-brown), non-concentric (irregular, black) and point (small, black spots). Fragments with a respective type of spots were disinfected, washed in distilled water, dried on sterile absorbent paper and placed on PDA medium. After incubation, fungal species were determined. Percentages of individual fungal species in relation to the sum of placed leaf or silique fragments for respective symptom types were calculated. Percentages of individual fungal species differed and depended on spot type, rape cultivar and season. Species the most frequently isolated from leaf spots were A. brassicae and A. alternata. A. alternata was mostly prevalent among the isolates obtained from point and concentric spots on siliques. In all the seasons A. brassicicola accounted for a low percentage of isolates and it was the most frequently isolated from non-concentric spots on leaves and non-concentric and point spots on siliques. A slightly higher number of isolates of species A. brassicae was found on leaves from untreated subjects on average for seasons and cultivars, as well as a higher percentage of cultures of species A. alternata for variants treated with the fungicide.

    ISSN : 1233-8273

    URL : http://www.ihar.edu.pl/biblioteka/oil...

    Record Number : 20133240526

    Publisher : Instytut Hodowli i Aklimatyzacji Roślin

    Location of publication : Poznań

    Country of publication : Poland

    Language of text : Polish

    Language of summary : English

    Indexing terms for this abstract:

    Organism descriptor(s) : AlternariaalternariaSubject Category: Organism Names
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    , Alternaria alternataalternaria alternataSubject Category: Organism Names
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    , Alternaria brassicaealternaria brassicaeSubject Category: Organism Names
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    , Alternaria brassicicolaalternaria brassicicolaSubject Category: Organism Names
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    , Brassica napus var. oleiferabrassica napus var. oleiferaSubject Category: Organism Names
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    , fungifungiSubject Category: Organism Names
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    Descriptor(s) : chemical controlchemical controlSubject Category: Techniques, Methodologies and Equipment
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    , cultivarscultivarsSubject Category: Organism Groups
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    , fungal diseasesfungal diseasesSubject Category: Diseases, Disorders, and Symptoms
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    , fungicidesfungicidesSubject Category: Chemicals and Chemical Groups
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    , leavesleavesSubject Category: Anatomical and Morphological Structures
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    , pathogenspathogensSubject Category: Organism Groups
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    , plant disease controlplant disease controlSubject Category: Miscellaneous
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    , plant diseasesplant diseasesSubject Category: Diseases, Disorders, and Symptoms
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    , plant pathogenic fungiplant pathogenic fungiSubject Category: Organism Groups
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    , plant pathogensplant pathogensSubject Category: Organism Groups
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    , prochlorazprochlorazSubject Category: Chemicals and Chemical Groups
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    , raperapeSubject Category: Commodities and Products
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    , swede rapeswede rapeSubject Category: Commodities and Products
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    Identifier(s) : canola, cultivated varieties, fungistats, fungus, oilseed rape, phytopathogenic fungi, phytopathogens, plant-pathogenic fungi

    Geographical Location(s) : PolandpolandSubject Category: Geographic Entities
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    Broader term(s) : PleosporaceaepleosporaceaeSubject Category: Organism Names
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    , PleosporalespleosporalesSubject Category: Organism Names
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    , DothideomycetesdothideomycetesSubject Category: Organism Names
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    , PezizomycotinapezizomycotinaSubject Category: Organism Names
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    , AscomycotaascomycotaSubject Category: Organism Names
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    , fungifungiSubject Category: Organism Names
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    , eukaryoteseukaryotesSubject Category: Organism Names
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    , AlternariaalternariaSubject Category: Organism Names
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    , Brassica napusbrassica napusSubject Category: Organism Names
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    , BrassicabrassicaSubject Category: Organism Names
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    , BrassicaceaebrassicaceaeSubject Category: Organism Names
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    , BrassicalesbrassicalesSubject Category: Organism Names
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    , eudicotseudicotsSubject Category: Organism Names
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    , angiospermsangiospermsSubject Category: Organism Names
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    , SpermatophytaspermatophytaSubject Category: Organism Names
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    , plantsplantsSubject Category: Organism Names
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    , Central Europecentral europeSubject Category: Geographic Entities
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    , EuropeeuropeSubject Category: Geographic Entities
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    , Developed Countriesdeveloped countriesSubject Category: Miscellaneous
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    , European Union Countrieseuropean union countriesSubject Category: Institutions and Organisations
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    , OECD Countriesoecd countriesSubject Category: Institutions and Organisations
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