Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2018
Authors
Esther Bloem Annette Dathe Attila Nemes Perrine Marguerite Fernandez Helen French Matthew Patterson Daniel GiminezAbstract
No abstract has been registered
Abstract
Improved waterlogging tolerance of wheat and barley varieties may alleviate yield constraints caused by heavy or long-lasting precipitation. The waterlogging tolerance of 181 wheat and 210 barley genotypes was investigated in field trials between 2013 and 2014. A subset of wheat genotypes were selected for yield trials in 2015 and 2016. Our aim was to: (1) characterize the waterlogging tolerance of genotypes with importance for Norwegian wheat and barley breeding, and (2) identify which phenotypic traits that most accurately determine the waterlogging tolerance of wheat in our field trials. Waterlogging tolerance was determined by principal component analysis (PCA) where best linear unbiased predictors (BLUPs) of the traits chlorosis, relative plant height, heading delay, relative spike number, relative biomass and an overall condition score were used as input variables. Six wheat and five barley genotypes were identified as consistently more tolerant in 2013 and 2014. This included the waterlogging tolerant CIMMYT line CETA/Ae. tauschii (895). Chlorosis and the overall condition score were the traits that best explained the yield response of the genotypes selected for the yield trials. Our results show that early stress symptoms did not necessarily reflect the ability to recover post treatment. Thus, records from full crop cycles appear as fundamental when screening populations with unknown tolerance properties.
Authors
Harrison Mburu Laura Cortada Grace Mwangi Kelvin Gitau Agnes Kiriga Zachary Kinyua George Ngundo Wilson Ronno Daniel Leigh Coyne Ricardo Holgado Solveig HaukelandAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Jonathan Rizzi Irene Brox Nilsen James Howard Stagge Kjersti Gleditsch Gisnås Lena M. TallaksenAbstract
Northern latitudes are experiencing faster warming than other regions in the world, which is partly explained by the snow albedo feedback. In Norway, mean temperatures have been increasing since the 1990s, with 2014 being the warmest year on record, 2.2 °C above normal (1961–1990). At the same time, a concurrent reduction in the land area covered by snow has been reported. In this study, we present a detailed spatial and temporal (monthly and seasonal) analysis of trends and changes in snow indices based on a high resolution (1 km) gridded hydro-meteorological dataset for Norway (seNorge). During the period 1961–2010, snow cover extent (SCE) was found to decrease, notably at the end of the snow season, with a corresponding decrease in snow water equivalent except at high elevations. SCE for all Norway decreased by more than 20,000 km2 (6% of the land area) between the periods 1961–1990 and 1981–2010, mainly north of 63° N. Overall, air temperature increased in all seasons, with the highest increase in spring (particularly in April) and winter. Mean monthly air temperatures were significantly correlated with the monthly SCE, suggesting a positive land–atmosphere feedback enhancing warming in winter and spring.
Authors
Gesine Schmidt Kristine S. Myhrer Ingunn M. Vågen Gerd Guren Elin Merete Wetterhus Silje Johansen John-Erik Haugen Paula Varela Grethe Iren Andersen BorgeAbstract
No abstract has been registered
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No abstract has been registered
Authors
U Vogler R Collier A-M Cortesero M Gaffney M Hommes Tor J. Johansen Richard Meadow N Meyling S Trdan D MazziAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Ivar PettersenAbstract
No abstract has been registered