dc.contributor.author | Stråbø, Sissela | |
dc.date.accessioned | 2015-02-26T12:08:45Z | |
dc.date.available | 2015-02-26T12:08:45Z | |
dc.date.copyright | 2014 | |
dc.date.issued | 2015-02-26 | |
dc.identifier.uri | http://hdl.handle.net/11250/277814 | |
dc.description.abstract | Anther extrusion (AE) is a trait that has been studied in wheat for its influence on Fusarium
head blight. Fusarium is a disease causing great problems in Nordic small grain production,
particularly in oat. However, AE is little studied in oat. In this thesis the variation of AE was
studied in RILs of two oat crosses, Svea × Stormogul and Fiia × Stormogul, and in a
collection of 146 genotypes, mainly of Nordic origin. Both crosses showed high heritability
for AE over two greenhouse experiments, and was estimated to be controlled by 4 and 6 genes
respectively. The association between AE and other traits was assessed, with lemma color
indicating linkage clearest. Two experiments with drought before anthesis gave lower AE in
all genotypes exposed to drought. Variation of extrusion was not found between branches in
the panicle, but between the 1st and 2nd florets. Neither the difference in swelling of lodicules
nor the lengths of filaments seemingly cause differences in AE. The association between AE
and DON was not convincing, but the percent florets with remaining anthers gave a ‘fan
shape’ when plotted against DON. Emasculated florets infected with Fusarium graminearum
indicated the same effect, with lowered DON level when anthers were removed. | nb_NO |
dc.description.sponsorship | Yara stipend 2012 | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Norwegian University of Life Sciences, Ås | |
dc.title | Genetic variation in anther extrusion in oats and its relationship to Fusarium | nb_NO |
dc.title.alternative | Genetisk variasjon i støvknappfelling i havre og forholdet til Fusarium | nb_NO |
dc.type | Master thesis | nb_NO |
dc.subject.nsi | VDP::Mathematics and natural science: 400::Zoology and botany: 480::Plant physiology: 492 | nb_NO |
dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Agriculture disciplines: 910::Plant breeding, horticulture, plant protection, plant pathology: 911 | nb_NO |
dc.relation.project | Bioforsk: 1110412, Norsk Genressurssenter: 'Genetisk mangfald i havre' | nb_NO |
dc.description.localcode | M-PV | nb_NO |