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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.

NIBIO POP → NIBIO Rapport → NIBIO Bok → Våre poenggivende vitenskapelige publikasjoner →

2011

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Authors

Abdelhameed Elameen Arild Larsen Sonja Klemsdal Siri Fjellheim Leif Sundheim Susan Msolla Esther Masumba Odd Arne Rognli

Abstract

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Authors

Heyie Alemayehu Chala Anne Marte Tronsmo May Bente Brurberg

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Authors

Erik Lysøe Matias Pasquali Andrew Breakspear H. Corby Kistler

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Authors

Tor Myking Igor A. Yakovlev Geir Atle Ersland

Abstract

The northernmost range of beech (Fagus sylvatica L.) is in southern Norway and consists of two distinct and isolated distributions, a single population at Seim in West Norway and several adjacent populations in Vestfold, East Norway. The modest beech pollen deposits beyond these main distributions suggest that the Norwegian beech distribution has never been an extension of the south Scandinavian range. We used genetic markers and historical sources to trace the ancestor populations for the beech at Seim and Vestfold, hypothesising Denmark as the most likely source. Nuclear inter-simple sequence repeat markers, amplified by polymerase chain reaction (PCR), were applied to estimate genetic distances between beech populations in Norway, England and Denmark. The variation in chloroplast DNA polymorphism was estimated using PCR-restriction fragment length polymorphism. The nuclear genetic data indicate Denmark as a source for the beech in Norway, although the data are less certain in the case of Seim than in that of Vestfold. The populations from South England were genetically different from most Scandinavian populations. The genetic variation within Norwegian populations was only slightly lower than that of the English and Danish populations, questioning birds as vectors for dispersal. Thus, the pollen data and our results are in accordance with the intentional introduction and documented human migrations across Skagerrak before and during the Viking Age.

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Authors

Daniel Kwaku Addo Asante Igor A. Yakovlev Carl Gunnar Fossdal Anna Marie Holefors Lars Morten Opseth Jorunn E. Olsen Olavi Junttila Øystein Johnsen

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Authors

Igor A. Yakovlev YeonKyeong Lee Bjørn Rotter Tore Skrøppa Øystein Johnsen Jorunn Elisabeth Olsen Carl Gunnar Fossdal

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Authors

Carl Gunnar Fossdal Nadeem Yaqoob Halvor Solheim Jan Karlsson Benedicte Rieber Albrectsen

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Authors

Carl Gunnar Fossdal Nina Elisabeth Nagy Ari Hietala Igor A. Yakovlev Halvor Solheim

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Authors

Tore Skrøppa Igor A. Yakovlev

Abstract

Experimental evidence shows that Norway spruce can adjust adaptive traits by a kind of long-term memory of temperature and day length present at the time of its early seed development. This mechanism is termed epigenetics; changes in gene activity not based on differences in the genetic code and yet transferable from one generation to the next. This is a rapidly growing research field in human, animal and plant genetics.

2010

Authors

Brita Toppe Maria Herrero

Abstract

I 2005 ble Phytophthora ramorum funnet på rododendron i parken på Gamlehaugen. I et felt med gamle, 2-3 meter høye planter med tykke stammer og greiner syntes sykdommen å ha forårsaket mest skade. Funnet ga oss anledning til å undersøke mærmere hvordan smitte av P. ramorum overlever i jord.