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.
1993
Forfattere
Fred Midtgaard Ove SørlibråtenSammendrag
Det er ikke registrert sammendrag
Forfattere
Bjørn TveiteSammendrag
Det er ikke registrert sammendrag
1992
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Tron Eid Erik Næsset Sveinung Nersten T. AaslandSammendrag
Det er ikke registrert sammendrag
Forfattere
Erik ChristiansenSammendrag
The defence of Norway spruce against a combined attack of the bark beetle Ips typographus and its associated blue-stain fungi is based upon a) constitutive resin stored in ducts of the bark and sapwood, and b) induced resinosis in reaction zones surrounding the point of infection. Empirically, beetle epidemics are associated with external stresses, drought being a particularly prominent factor. An attempt was made to mechanistically explain the apparent link between drought and infestations, through studying after-effects of drought on the induced defence in stressed trees. In the field, 3-5.5 m tall trees were exposed to artificial drought over three growth seasons to investigate whether this treatment would predispose them to fungal infection in a fourth season when drought was absent. Pre-dawn xylem water potentials down to -1.85 MPa and a considerable foliage depletion were recorded. In the fourth season, the trees were inoculated with Ophiostoma polonicum, a pathogenic associate of Ips typographus. No difference in susceptibility could be seen between drought stressed trees and unstressed controls. Carbohydrate concentrations of foliage and branch bark were slightly enhanced and mineral nutrient concentrations strongly reduced in stressed trees.
Forfattere
Dan AamlidSammendrag
Det er ikke registrert sammendrag
Forfattere
Tore VikSammendrag
Det er ikke registrert sammendrag
Forfattere
Tore SkrøppaSammendrag
Det er ikke registrert sammendrag
Forfattere
Øystein AustaråSammendrag
Det er ikke registrert sammendrag
Forfattere
Torbjørn OkstadSammendrag
Det er ikke registrert sammendrag