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.
1999
Forfattere
Bjørn MoltebergSammendrag
En lett harving om høsten i enkelte kornområder kan gi mer miljøvennlig drift enn overvintring i stubbåker, etter en samlet vurdering av faktorene erosjon, ugras, halmdekke og avling.
Forfattere
Harald Kvaalen M. AppelgrenSammendrag
We studied how light from different light sources influences germination and postgerninative growth of plants from somatic embryos and seeds of Norway spruce (Picea abies [L.] Karst).Somatic embryos of three spruce genotypes and seeds were subjected to light from commercially available light sources: Philips TLD Blue 18W/18 (BL), Osram Fluora (FL), Philips Cool White TL 50W/33 (CW), Osram Warm White 18W/30 (WW), Philips Yellow 36W/16 (YE) and Philips TLD Red 36W/15 (RE), 18 h a day, with a photon flux (PAR) at 30 mu mol m(-2) s(-1). After 6 weeks the germination frequencies of the somatic embryo-derived plantlets were 50% under BL and 98% under RE. The corresponding mean root lengths were 6.7 and 15.4 mm. In somatic embryo-derived plantlets cultured under BL, FL, CW and WW, both roots and hypocotyls turned brown, presumably due to production of phenolic substances. Browning was less severe in somatic embryo-derived plantlets cultured under RE and YE. Under RE, the epicotyl elongated in 37% of the plantlets after 6 weeks, compared with 70% under the other light sources. Seed germination and postgerminative seedling growth was modestly influenced by light from these light sources. RE and WW initially delayed germination as compared with BL, FL and CW, but after 2 weeks, more than 90% of the seeds had germinated under all light sources. In conclusion, germination and postgerminative growth of somatic embryos of spruce is sensitive to differences in light quality, whereas seed germination and seedling growth is not.
Forfattere
Berit Skoglund SkåtøySammendrag
Lind (Tilia cordata Mill) Historisk betydning, innvandringshistorie, beskrivelse av treslaget, anvendelse i tidligere tider, lind i landskapet, sykdommer hos lind, fordeler og ulemper ved lind.
Forfattere
V Alm C Busso O.A RognliSammendrag
Meadow fescue (Festuca pratensis Huds.) is like most forage grasses an outbreeding plant species. Outbreeders are commonly characterised by having selv-incompatibility and severe inbreeding depression, which make the production of inbred lines and DH-lines difficult. Linkage anlysis is more complicated in outbreeders than in inbreeders. Markers may vary in the number of segregating alleles, one or both parents may be heterozygous, markers may be dominant or co-dominant, and usually the linkage phases of marker pairs are unknown (Maliepaard et al. 1997). One way to circumvent these complications is to carry out linkage analysis for each parent separately (Grattepagglia and Sederoff 1994). We have developed RFLP-and AFLP-markers in meadow fescue, and used a full-sib family consisting of approx. 140 progenies from a cross between a genotype from the Norwegian genotype "HF Løken" and a genotype from the Yoguslavian cultivar "B14" to construct preliminary linkage maps for meadow fescue. This paper will illsutrate problems and advantages using full-sib families for construction of molecular linkage maps.
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Forfattere
D. LindgrenSammendrag
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Forfattere
M. TroggioSammendrag
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