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.
2008
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Rotstokkråte i jordbær og rød rotråte i bringebær kan gi store avlingstap. En effektiv måte å kontrollere sykdommene på er bruk av resistente sorter. Sortsforedling er både tids- og arbeidskrevende, men ved bruk av bioteknologiske verktøy kan prosessen rasjonaliseres. Bioteknologiske verktøy er også meget godt egnet for å få detaljert kunnskap om samspillet mellom en plante og en skadegjører, hvilket på sikt kan gi nye metoder for bekjempelse.
Sammendrag
Forsøk har synt at det mest vanlege dekkesystemet over søtkirsebær i Noreg kan nyttast både som eit alternativ og eit supplement til sprøytingar med kjemiske middel mot rotesoppar som angrip søtkirsebærfrukter.
2007
Sammendrag
Fem nye mjøldoggtolerante sorter ble sammenlignet med målesorten "Rapides" i lyskultur med nedsenking og planting om høsten. Det ble ikke funnet forskjell i avling mellom sortene. Selv om det ble påvist forskjeller i agurkkvalitet, tidlighet og mjøldoggtoleranse, var ingen av sortene et klart bedre alternativ enn "Rapides".
Sammendrag
Veiledningsprøvinger i agurk høsten 2006 viste klare forskjeller mellom sortene både i avling, kvalitet og mjøldoggtoleranse. Fem nye mjøldoggtolerante sorter ble vurdert i forhold til målesorten "Aviance" i paraplykultur. Resultatene viser at de nye sortene har bedre holdbarhet og mjøldoggtoleranse enn "Aviance*. Når det vurderes både avling, kvalitet og mjøldoggtoleranse, er den nye sorten "Shakira" et bedre valg enn "Aviance
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Histological properties of the graft union between a rootstock and scion may provide a mechanistic explanation why dwarfing rootstocks are able to reduce the growth of the tree. In order to investigate the relationship between growth and the amount of functional xylem tissue of potted sweet cherry trees, an experiment was conducted during 2002-2003. One year old field budded and bench grafted (from greenhouse) sweet cherry trees of the cultivars Van, Ulster and Lapins in all combinations of the three rootstocks Prunus avium seedling, Colt and Gisela 5 were grown in pots for two growing seasons. After shoot extension had terminated when trees were in full leaf the second year, the total growth of the different parts of the trees and the functional area using safranin staining were measured. The total mass production (tree dry weight, the length of two year old wood and number of leaves) was significantly larger in the budded trees. Similarly the trunk cross sectional area was significantly larger 10 cm above and in the middle of the graft union, but not 10 cm below it. The Colt trees were the most vigorous followed by the seedling and Gisela 5. Minor differences between the different cultivars were registered. Xylem staining with aqueous safranin combined with quantitative image analysis showed that the rootstock stem had a higher proportion of stained tissue than the scion stem. Sections taken in the middle of the graft tissue and 10 cm above showed that the proportion of stained tissue declined proportionally with the distance from the roots. The total area of stained stem xylem was larger for the two vigorous rootstocks compared to Gisela 5. Small differences were observed between cultivars and propagation methods.
Sammendrag
The effects of photoperiod (12, 13, 14, 15 or 16 h), day-temperature (12, 15, 18, 24 or 27"C) and night-temperature (6, 9 or 12 oC) and their interactions on flower and inflorescence emergence were investigated by exposing 4 week old runner planst of strawberry cvs. Korona and Elsanta during a period of 3 weeks. A daily photoperiod of 12 or 13 h resulted in the highest numbers of plants with emerged flowers. A photoperiod of 14 h or more strongly reduced this number, while no flowers emerged at a photoperiod of 16 h. Plants exposed to photoperiods of 12 or 13 h flowered earlier and had longer flower trusses. A day-temperature of 18 oC and a night temperature of 12 oC were optimal for plants to emerge flowers and resulted in shortest time to flowering. A night temperature of 6 oC strongly reduced the number of plants that emerged flowers, especially when combined with lower day-temperatures. Photoperiod and temperature had no effect on the number of inflorescences, all flowering plants produced on average one inflorescence. The number of flowers on the inflorescence increased with decreasing day temperature and when photoperiod was raised fra 12 to 15 h. In general, `Korona" was more sensitive to photoperiod and temperature than `Elsanta", and had a lower optimal day-temperature for flower emergence. Results of this experiment may be used to produce high quality plant material or to define optimal conditions when combining flower induction and fruit production.