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
Leiv MortensenSammendrag
Seedlings of betula pubenscens Ehrh. (mountain birch) and Phleum pratense L. (timothy) were grown for 42 days under full light or 50% shade in the field at 12º C, and at comparable photosynthetic radiation (PAR) levels in a greeenhouse at 18º C. Plants from the four pretreatments were exposed to 78 nmol mol -1 (ppb) O3 (8 h day -1 ) under two temperatures (15 and 250 C), two relative air humidities (50 and 80% RH) or two CO2 concentrations (400 and 750 mmol mol -1) during 7 days.
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.
Forfattere
O.A Rognli V Alm C BussoSammendrag
Meadow fescue (Festuca pratensis Huds.) is one of the major fodder grass species of Northern Europe. It is also a very interesting species since hybridize with perennial ryegrass (Lolium perenne L.), the dominating grass species in Europe. There is a great interest in Europe to develop new hybrid cultivars (Festulolium) that combine the high fodder quality of Lolium with the generally higher stress-tolerance of Festuca. This was the background for our interest in developing molecular markers and agenetic linkage map in meadow fescue. These will be essential tools in modern fodder crop breeding.
Forfattere
Svein Eilertsen Ivar Schjelderup Stein MathisenSammendrag
Utilization of abandoned coastal meadows in northern Norway by reindeer (Rangifer tarandus tarandus) were investigated for 25 days in spring 1996 (n=12, 40-57 kg body mass (BM)) and 24 days in 1997 (n=12, 39-61 kg BM). Grass production on grazed and ungrazed meadow was measured both years. Faecal dry matter (DM) production and ruminal in vitro DM digestibility (IVDMD) of selected plants were measured in the reindeer 15-22 days after the grazing experiment started each year. During the grazing period mean ± standard deviation (s) temperature was 8.7, s = 2.8, °C in 1996 and 11.0, s = 3.0, °C in 1997, while temperature the first week was significantly higher in 1997 (P
Forfattere
B Darvas Arild AndersenSammendrag
Andalin DC-25, NeemAzal-F and RH 5849 2 F hindret ikke voksne hunner av havrebladminerflue fra å foreta næringsstikk eller legge egg. Trigard 75 WP og Fk-dimetoat hadde derimot tilfredstillende virkning.
Sammendrag
In five-long term field trials with reduced or no-tillage the grain yield decreased and the weed infestation increased compared to autumn or spring ploughing. Both stubble treatment with glyphosate and post-emergence weed control in the crop were necessary for sufficient weed control and to keep the yield at the same level as for the ploughed plots in these systems. Weather conditions influenced weed emergence and growth of weeds and cereals during the growing season, and thereby the yield depressing effect of the weeds.
Forfattere
Leiv Mortensen Hans R GislerødSammendrag
The influence of three reative air humidities and two lighting periods on growth, vase life and leaf-water relations was studied in 14 rose cultivars.It is concluded that high air humidity and continuous lighting in general should be avoided in the production of greenhouse roses.
Forfattere
Arild AndersenSammendrag
Åkersnegl var mest tallrik ved redusert jordarbeiding (og korrelert med ugrasdekningen), særlig i direktesådd. Tripsangrepet var korrelert med kornkvaliteten. Det var mest havrebladminerflue i konvensjonelle ruter, sannsynligvis pga. frodigere kornplanter der. Det var generelt mer av nyttedyrene løpebiller og kortvinger i ruter med redusert jordarbeiding. De vanligste artene blir behandlet separat.
Forfattere
Lars Olav Brandsæter Jan NetlandSammendrag
Det er ikke registrert sammendrag
Forfattere
H.B GjærumSammendrag
Five Carex rust species, four of which Uredo spp. nov., one new for African host