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The inheritance of anther extrusion in hexaploid wheat and its relationship to Fusarium head blight resistance and deoxynivalenol content

Author: Skinnes, H.
Author: Semagn, K.
Author: Tarkegne, Y.
Author: Maroy, A.G.
Author: Bjornstad, A.
Year: 2010
ISSN: 0179-9541
Abstract: Anther extrusion (AE) has been suggested as one of the resistance mechanisms to Fusarium head blight (FHB) in wheat, but not well investigated. The objectives of this study were to assess AE in the double haploid population _Arina_ ? _NK93604_, evaluate its relationship both with FHB and deoxynivalenol (DON) accumulation, and map quantitative trait loci (QTLs). AE was studied in 2005)2007 and its relationship to FHB and DON content was analysed with data from Fusarium culmorum inoculations in 2001-2003 and with Fusarium graminearum in 2007. AE showed continuous distribution, transgressive segregation, minimal genotype - year interactions and was highly heritable (H2 = 0.91). Mean AE showed highly significant negative correlations both with FHB (r = )0.53 to )0.69, P = 0.0001) and DON (r = )0.39 to )0.46, P = 0.0001). Composite interval mapping identified 4 QTLs for mean AE over 2 years that explained 53.6% of the total phenotypic variation. The phenotypic variance explained by the QTLs on chromosomes 1AL, 1BL, 4DL and 6AS varied from 7.4% to 18.3%. This is the first report describing QTLs for AE and to look systematically for association of AE with FHB and DON.
Language: English
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Region: Global
Pages: 149-155
Journal issue: 2
Journal: Plant Breeding
Journal volume: 129
DOI: 10.1111/j.1439-0523.2009.01731.x
Keywords: Arina
Keywords: Fusarium head blight
Keywords: Deoxynivalenol
Keywords: anther extrusion
Keywords: Mapping
Keywords: Molecular Markers
Keywords: Wheat

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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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