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.
2010
Forfattere
Inger MartinussenSammendrag
Bioprospecting covers commercial purpose research and development, building on use of natural occurring compounds, all the way from first discovery, over patenting, benchmarking, improvement, development and commercialization.
Sammendrag
Two female and two male cultivars have previously been released as a result of clone evaluation at Bioforsk Nord Holt. Selection criteria have been number of pistils or stamens per flower, number of flowers and number of shoots per m2. Currently a new group of clones are evaluated with the aim of finding new cultivars for release. The clones are collected from different parts of Norway, as well as from England and Spitsbergen. Preliminary results from harvesting 2005, 2006, 2007 and 2008 indicate good production potential for a couple of the tested clones. In addition to prior selection criteria based on berry yield, the levels of total anthocyanins and total phenols have been analyzed. This includes studies on the role of female clone, male pollinator and temperature on berry quality.
Forfattere
Inger MartinussenSammendrag
Cloudberry (Rubus chamaemorus L.) is a dioecious perennial plant of the Rosaceae family with a circumpolar distribution. cloudberry fruit consist of up to about 30 drupes, each with a single seed, covered by a hard endocarp. The ripe berry is orange or yellow, soft and high in vitamin C. both the ratio of female plants, number of pollinating insects and fruit development is much influenced by climatic factors causing large variation in annual yields. cloudberry is mainly collected from natural stands, but there is an increased interest in cultivation and commercial cultivation tecchniques. Cultivation and plant breeing on cloudberry have been carried out for several years at Bioforsk nord, and has resulted in the release of four commercial varieties, including two male (Apollen and Apollto) and two female (Fjellgull and Fjordgull) varieties. These varieties have been selected for increased productivity by using profuse flowering, berry size and shooting capacity as criterions. In addition, the female varieties have been selected for the number of pistils per flower and the male varieties by the number of stamens per flower. Currently a new group of clones are evaluated with the aim of finding new cultivars for release. The clones are collected from different parts of Norway, as well as from England and Spitsbergen. Preliminary results from harvesting 2005, 2006, 2007 and 2008 indicate good production potential for some of the tested clones. There are two main aproaches for cloudberry cultivation; exploitation of natural cloudberry stands and the second is based on planting of improved plant material. Both approaches require fertilization and soil cultivation. Methods for propagation of material have been developed as well as a guide for greenhouse production of cloudberries. Recently attempts to cultivate natural stands of European blueberry (Vaccinium myrtillus) have been initiated. The fields are both on forest soil and on cultivated soil and are situated in North- Mid- and South-Norway.
Sammendrag
In this study we investigated the interaction between temperature and genotype on fruit development and levels of total phenols and anthocyanins in cloudberry. The experiment was done in a phytotron using one female (‘Fjellgull") and one hermaphroditic (‘Nyby") cultivar. Plants were grown at 9, 12, 15 and 18°C in 24-h photoperiod. The female cultivars were pollinated with pollen from a male (‘Apollen") clone and from the hermaphrodite clone. Parthenocarpic fruit development was induced by gibberellic acid (GA3). Ripe berries were frozen individually at -80°C and stored until analyses. There was a linear, double logarithmic relationship between temperature and number of days from pollination/GA3-treatment to ripening. ‘Fjellgull" had significantly larger berries than ‘Nyby", and the largest berries were obtained at 12 and 9°C. Pollen clone did not have a significant effect on berry size. GA3 induced parthenogenesis in ‘Fjellgull" and partial parthenogenesis in ‘Nyby". In ‘Fjellgull", the parthenocarpic berries were comparable to pollinated ones at low temperatures, but at 18°C their development was restricted. The level of total anthocyanins was significantly higher in ‘Fjellgull" than in ‘Nyby", and these levels were significantly enhanced at 9 and 12°C compared to higher temperatures. Levels of total phenolic compounds were not significantly affected. In conclusion, the present results indicate that low temperature is favourable both for size and quality of cloudberries.
Sammendrag
Det er ikke registrert sammendrag
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Det er ikke registrert sammendrag
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Det er ikke registrert sammendrag
Forfattere
Anne Kjersti BakkenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Innen økologisk landbruk er man generelt opptatt av dyrevelferd og å gi dyrene mulighet til naturlig atferd. Det er derfor et krav i det økologiske regelverket at alle storfe inkludert okser skal ha permanent tilgang på utearealer, fortrinnsvis beite om sommeren, og at storfe som står oppbundet skal ha daglig tilgang på luftegård om vinteren. Det er gjort unntak for okser over 12 måneder, de kan holdes i løsdriftssystem med fri tilgang på luftegård dersom de ikke kan slippes på beite.
Sammendrag
Innen økologisk landbruk er man generelt opptatt av å ha god dyrevelferd og å gi dyrene mulighet til naturlig atferd. Det er derfor et krav i det økologiske regelverket at alle dyr, inkludert okser, skal ha tilgang til utearealer, fortrinnsvis som beite om sommeren. Okser over 12 måneder kan holdes i løsdriftssystem med fri tilgang på luftegård dersom de ikke kan slippes på beite. [...]