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
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Anita SønstebySammendrag
Vi har studert den klimatiske reguleringen av blomsterdanningen hos en rekke norske populasjoner av markjordbær. Resultata viser mange likhetstrekk med det som er kjent for hagejordbær med et utpreget samspill av temperatur og daglengde. Markjordbær er således dagnøytrale og danner blomster i både korte og lange dager ved 9 °C, ved 15 °C bare under kortdags-forhold, mens de ikke evner å danne blomster i det hele tatt ved 21 °C uansett daglengdeforhold.
Sammendrag
Perpetual-flowering strawberry cultivars are commonly classified as photoperiodically day-neutral, even though early investigations demonstrated long-day (LD) regulation. An important reason for this inconsistency is that these freely flowering plants are difficult to establish in a true vegetative state, and experiments have therefore, often been started using runner plants with pre-formed inflorescences. In order to circumvent this problem, we have used the perpetual-flowering F1-hybrid `Elan" that is propagated by seed, and is thus not pre-conditioned by its earlier life history. The results demonstrated a marked quantitative LD response across a range of temperatures from 9º - 27ºC. Seedlings were responsive to the LD stimulus at an early stage, and early flowering required LD exposure almost from germination. The critical daylength for the early flowering response was about 15 h at 18ºC. Because of this threshold LD response, it is concluded that regulation of flowering is truly photoperiodic in nature, and not merely an effect of additional light. Flower development was also slightly advanced by LD conditions. Stolon formation was strongly enhanced by short day conditions in combination with high temperature. Thus, not only flowering, but also runnering, was oppositely affected by photoperiod in `Elan" compared with mono-flowering cultivars. The results are discussed in relation to the photoperiodic classification of strawberries.
Sammendrag
Sortar av solbær og rips for økologisk produksjon må ha god resistens mot viktige soppar og skadedyr. Registreringar i sortsforsøk i fleire regionar syner stor variasjon mellom sortane. Bær av solbær og ripa har høgt innhald av helsefremmande innhaldsstoff, men analysar har synt store variasjonar mellom sortane. Registreringar i fleire år vil syna om sortane rangerer likt frå år til år.
Sammendrag
Ved Bioforsk Øst Kise er det forsøksfelt hvor ripssorter blir prøvd ved økologisk dyrking. Artikkelen presenterer de første resultatene fra forsøkene og gir foreløbige vurderinger av seks ripssorter plantet i 2002. Det presenteres avlingstall, verdier for bær- og klasestørrelse samt kartfall og løst tørrstoff.
Sammendrag
The objective of this experiment was to investigate the effect of clover species in grass-clover silage and of concentrate supplementation on milk fatty acid (FA) composition. Trifolium repens (WC) and Trifolium pratense (RC) grown in mixture with grasses were preserved in round bales and fed to autumn calving dairy cows during the first 12 weeks of lactation. Milk produced on RC silage had a higher proportion of polyunsaturated FAs (3.09 vs. 2.84%, P
Sammendrag
The objective of this study was to examine the effect of clover species on milk fatty acid (FA) composition. Lactating dairy cows were allocated to two groups and fed grass-clover silage containing either white clover (WC) or red clover (RC), without or with concentrate supplementation. No significant interaction of clover species with concentrate supplementation could be observed. RC milk had significantly higher proportion of polyunsaturated FAs (P<0.001), particularly C18:3n-3 (P<0.001), and contained a higher n-3/n-6 FA ratio (P<0.05) than WC milk. It is concluded that RC silage, independent of concentrate supply, yielded milk with more beneficial FA composition than WC silage.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Ein LC-MS/MS metode for å bestemme 11 fytoøstostrogesambindingar vart utvikla og validert. Alle 11 kunne påvisast i kumjølk.
Sammendrag
An LC-MS/MS method for determination of 11 phytoestrogens was developed and validated. All was demonstrated presencet in dairy milk.