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GrainGenes Reference Report: TAG-106-961

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Reference	TAG-106-961
Title	Mapping of quantitative trait loci for field resistance to Fusarium head blight in an European winter wheat
Journal	Theoretical and Applied Genetics
Year	2003
Volume	106
Pages	961-970
Author	Gervais L [ Show all 8 ]
Abstract	Summary: Fusarium head blight (FHB) caused by Fusarium culmorum is an economically important disease of wheat that may cause serious yield and quality losses under favorable climate conditions. The development of disease-resistant cultivars is the most effective control strategy. Worldwide, there is heavy reliance on the resistance pool originating from Asian wheats, but excellent field resistance has also been observed among European winter wheats. The objective of this study was to map and characterize quantitative traits loci (QTL) of resistance to FHB among European winter wheats. A population of 194 recombinant inbred lines (RILs) was genotyped from a cross between two winter wheats Renan (resistant)/Recital (susceptible) with microsatellites, AFLP and RFLP markers. RILs were assessed under field conditions For 3 years in one location. Nine QTLs were detected, and together they explained 30-45% of the variance, depending on the year. Three of the QTLs were stable over the 3 years. One stable QTL, QFhs.inra.2b, was mapped to chromosome 2B and two QTLs QFhs.inra.5a2 and QFhs.inra5a3, to chromosome 5A; each of these QTLs explained 6.9-18.6% of the variance. Other QTLs were identified on chromosome 2A, 3A, 3B, 5D, and 6D, but these had a smaller effect on FHB resistance. One of the two QTLs on chromosome 5A was linked to gene B1 controlling the presence of awns. Overlapping QTLs for FHB resistance were those for plant height or/and flowering time. Our results confirm that wheat chromosomes 2A, 3A, 3B, and 5A carry FHB resistance genes, and new resistance factors were identified on chromosome arms 2BS and 5AL. Markers flanking these QTLs should be useful tools for combining the resistance to FHB of Asian and European wheats to increase the resistance level of cultivars
External Databases	https://doi.org/10.1007/s00122-002-1160-5 Komugi: 10055
QTL	QEet.inra-2B [ Show all 17 ]
Keyword	[ Hide all but 1 of 54 ] aflp awns barley blight bread wheat chromosome chromosome 5a climate control culmorum disease disease resistance doubled-haploid population fhb field field-resistance flowering flowering time flowering-time fusarium fusarium culmorum fusarium head blight gene genetic analysis grain yield graminearum head blight height locus map mapping plant height population qtl qtl mapping quality quantitative quantitative trait quantitative trait loci quantitative traits loci recombinant inbred recombinant inbred line resistance rflp scab tool tools trait trait loci triticum aestivum variance wheat chromosomes winter yield

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