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.
2007
Forfattere
Inger HansenSammendrag
Om antipredatoratferd hos ulike saueraser. Leserinnlegg etter fjernsynsreportasje i Schrödingers katt.
Forfattere
Trine A Sogn Espen Govasmark Susanne Eich-Greatorex Anne Falk Øgaard John A. MacLeodSammendrag
Det er ikke registrert sammendrag
Forfattere
Celine ReboursSammendrag
Det er ikke registrert sammendrag
Forfattere
Celine Rebours Åsbjørn KarlsenSammendrag
Seaweeds are considered as important ecological actors in many aspects. Therefore, developing the research around seaweeds to use and expand this natural resource is crucial. The highly developed wild coastline of Norway is a natural laboratory for such studies, but also a logical choice for developing new industries. Using special environments, like the Barents Sea and its related potential sources of conflicts, as pilot case studies, may lead to new tools versus human pollution.
Forfattere
Celine Rebours Åsbjørn KarlsenSammendrag
Seaweeds are considered as important ecological actors in many aspects. Therefore, developing the research around seaweeds to use and expand this natural resource is crucial. The highly developed wild coastline of Norway is a natural laboratory for such studies, but also a logical choice for developing new industries. Using special environments, like the Barents Sea and its related potential sources of conflicts, as pilot case studies, may lead to new tools versus human pollution.
Sammendrag
In winter 2000-2001, there was a serious outbreak of Gremmeniella abietina Morelet in southeastern Norway. During the outbreak, we noted that injured Scots pine trees (Pinus sylvestris L.) developed secondary buds in response to the fungus attack, and we decided to study the relationship between injury, appearance of secondary buds and recovery of the trees thereafter. For this purpose, 143 trees from 10 to 50 years of age were chosen and grouped into crown density classes. Injury was assessed in detail, and buds were counted before bud burst in the spring of 2002. In addition, a subset of 15 trees was followed through the summer of 2002 to assess recovery. All injured trees developed secondary buds, with a clear overweight of dormant winter buds in proportion to interfoliar buds. Healthy control trees did not develop secondary buds at all. The secondary buds appeared predominantly on the injured parts of the tree; interfoliar buds in particular developed just beneath the damaged tissue. Most of the secondary buds died during the winter of 2001-2002, mainly because the fungus continued to spread after the first outbreak. Many of the remaining buds developed shoots with abnormal growth during the summer. Secondary buds may help trees to recover from Gremmeniella attacks, but this strategy may fail when the fungus continues to grow and injure the newly formed buds and shoots.
Sammendrag
In Norway, Nordmann (Abies nordmanniana) and subalpine fir (A. lasiocarpa) are the dominant Christmas tree species and Noble fir (A. procera) the dominant species for bough production. In the spring of 2005 a survey was undertaken to determine the presence of fungi on seeds of these three plant species. Twelve seed samples were tested; five from Nordmann fir, four from subalpine fir and three from Noble fir. The test included seeds produced in Austria (Nordmann fir), Canada (subalpine fir), Georgia (Nordmann fir), Norway (Noble and subalpine fir) and Russia (Nordmann fir). The testing was done in a certified seed laboratory in Norway. One hundred seeds per sample were pre-treated in 1 % NaOCl and plated on potato dextrose agar (PDA), and 100 seeds per sample were pre-treated in H2O2 and plated on water agar (WA). The PDA Petri dishes were incubated for 5 to 7 days at 20 + 2 ºC and the WA Petri dishes for 15 to 19 days at 15 + 2 ºC, both under alternating 12 h NUV-light and 12 h darkness. To date not all of the fungi have been identified, but fungi from several genera have been found: Alternaria, Anthostomella, Aspergillus, Aureobasidium, Botrytis, Caloscypha, Cephalosporium, Chaetomium, Cladosporium, Dictyopolyschema, Epicoccum, Fusarium, Mucor, Penicillium, Phoma, Rhizopus, Trichoderma, and Trichothecium. Caloscypha was only found on one subalpine fir seedlot from Canada and Anthostomella on one subalpine fir seed from Norway. All the other fungi were more commonly found in all the samples. Fusarium species are well known to cause damping off in nurseries, but are not reported to cause problems in production fields. Species of Alternaria, Phoma, Botrytis and Trichothecium can damage seedlings. Anthostomella conorum is reported on cone scales of pine (Pinus spp.), but is not described as pathogenic. Aureobasidium is described as a saprophytic or weakly parasitic cosmopolitan fungal genus. Aureobasidium sp. is commonly found in Norway on buds of subalpine fir which fail to open in spring, and it will therefore be included in a pathogenicity test.
Forfattere
A.J. Murdoch R.A. Nicholls J.L. Gonzalez Andujar D. Benoit A. Davies F. Forcella F. Graziani A.C. Grundy L. Karlsson P. Milberg P. Neve I.A. Rasmussen J. Salonen B. Sera E. Sousa F. Tei Kirsten Tørresen J.M. UrbanoSammendrag
Karakteristikk av frøspiring og frøhvile i frøpartier av meldestokk fra ulike land i Europa og Nord-Amerika ble presentert
Forfattere
Trygve S. Aamlid Lars Tørres Havstad Birte BoeltSammendrag
Det er ikke registrert sammendrag
Sammendrag
Since the formation of the International Herbage Seed Group (IHSG, formerly IHSPRG) in 1978, International Herbage Seed Conferences have been organized, mostly at four year intervals. The Sixth Conference was held at Gjennestad Horticultural College in Vestfold, Norway, from 18 to 20 June 2007. As for other IHSG activities, the objective of the conference was ‘to encourage cooperation and communication between workers actively engaged in herbage seed production research’. About 80 delegates from 20 countries attended the conference. Four invited and almost sixty voluntary papers were presented, either orally or as posters. The topics were split into the following sessions: 1. Opening session with overview over herbage seed production and seed trade, world wide. 2. Herbage seed for the future: Biodiversity, GMOs and the role of seed yield capacity in herbage breeding programs. 3. Seed production of tropical species and species for stressful environments. 4. Physiological restraints to seed set and seed filling. 5. Establishing the potential for high and pure seed yields. 6. Fertility, plant growth regulators, and plant protection. 7. Statistical methods, seed harvest, and post-harvest issues.