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
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Mekjell MelandSammendrag
Det er ikke registrert sammendrag
Forfattere
Mekjell MelandSammendrag
Det er ikke registrert sammendrag
Forfattere
Jens Rohloff Inger Martinussen Eivind Uleberg Olavi Junttila A Hohtola Laura Jaakola Hely HäggmanSammendrag
The fruit quality of European blueberry (EB) is mainly determined by taste compounds (sugars, acids, flavour) and health-beneficial structures generally denoted as antioxidants (vitamin C, phenolic acids, flavonols, anthocyanins, proanthocyanidins). Content and compound composition is strongly affected by the growth environment regarding light, temperature, water and edaphic factors. In order to assess genotypic relationships (northern and southern clones of EB) and environmental impact (temperature, day length) on berry quality parameters, a high-throughput system for blueberry metabolite profiling of nutritional compounds was established based on gas chromatography coupled with mass spectrometry (GC/MS). Dried methanol/H2O extracts from fresh-frozen berry tissue were derivatized, and subjected to GC/MS in order to detect polar compounds such as organic acids from Krebs-cycle, amino acids, sugars, polyols, and partly secondary metabolites (phenols, flavonoids). In addition, general quality parameters such as total phenols, total anthocyanins and antioxidant capacity (FRAP) were measured. Fructose (5 g), glucose (5 g), and sucrose (0.5 g/ 100 g f.w. at average) were the most abundant carbohydrates, together with high levels of organic acids such as citric acid (1.3 g), quinic acid (1.6 g), and malic acid (0.3 g/ 100 g f.w. at average). More than 50 metabolites per sample (identified compounds and not-annotated mass spectral tags) could be detected, and established the basis for multivariate statistics using principal component analysis, hierarchical clustering, and metabolite network analysis. Genotypic differences, modulation of metabolite pools and biosynthetic relationships are being discussed in-depth
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.
Sammendrag
Examination of European blueberry (EB) populations from different latitudes in Norway revealed differences in growth, fruit yield and fruit quality. Two northern and two southern clones of EB (from between 61-69 degrees N) were grown at 12 degrees C and 18 degrees under shourt (12 h) and long (24 h) days. The northern clones were able to grow rapidly at reasonable low temperatures when given 24 hour light, while the southern clones seemed to be adapted to shorter days and were not able to use the 24 h light efficiently. In the field EB tended to grow longer shoots in 2009 at intermediate fertilization in half-cultivated forest fields fertilized in 2008 and 2009, while shoot number was not influenced by fertilization. Berry size and fruit yield in forest fields was not influenced by fertilization neither in 2008 nor in 2009. However, there were differences in yield between locations in both years and between soil conditions in 2008. Fertilized seedlings sawn in March 2008 and planted on farm land in July the same year, grew larger plants in 2009 compared with no fertilization, but developed no flowers. Content of sugar, anthocyanins, total phenols, and antioxidants was higher in Mid- and North- Norway compared to samples from the south, in 2008. Fruit quality parameters changed from early to late harvest in the ripening period (only samples from South Norway). Sugar content was highest at the early maturation stage, while anthocyanin levels were highest in the mid-harvest period and then declined. Antioxidant levels increased at later harvest dates, and data was clearly correlated with total phenol content but not with anthocyanins. Berries produced at 12 degrees had significantly higher % sugars (sucrose, fructose and glucose), phenolic acids and total phenols than berries produced at 18 degrees.
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 some 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.
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Gunhild Børtnes Ruth MordalSammendrag
Forsøk i vintersar (Satureja montana) og sommarsar (Satureja hortensis) ved Bioforsk Øst Kise og Apelsvoll 2005 - 2009