Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2011
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Venche TalgøSammendrag
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Pieces from the stem, approximately 1.5 m above the trunk base, from two Norway maple (Acer platanoides) trees were collected in March 2010 in a forest in Stavanger, a city on the southwestern coast of Norway. The trees showed dieback symptoms in the crown and had bleeding canker wounds on the stems. Phytophthora plurivora had been isolated from the trunks in 2009. At JKI the wood samples were cut into sections, and a detailed procedure was followed for fixation, dehydration, preinfiltration, infiltration, polymerization, and mounting. The mounted histoblocs with the specimen were removed from the histoforms, and a rotary microtome was used for preparing thin sections which were placed on glass slides for microscope examination. Examination in light microscope revealed that the cells in the vascular system had collapsed. Phytophthora-like hyphal growth was found in and between wooden cells, but not in the bark. Since P. plurivora was isolated from the sample, we may conclude that the hyphae belonged to that pathogen. Also epifluorescence studies were carried out, and we found non-septated hyphae in the rays, further indicating the presence of P. plurivora in the wood tissue.
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I 2008 vart det for første gong her i landet funne mjøldogg på bjørkebladspirea. Også japanspirea er utsett for mjøldogg.
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