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GrainGenes Reference Report: CRS-43-307

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Reference	CRS-43-307
Title	Quantitative trait loci for fusarium head blight resistance in barley detected in a two-rowed by six-rowed population
Journal	Crop Science
Year	2003
Volume	43
Pages	307-318
Author	Mesfin A [ Show all 7 ]
Abstract	Summary: Fusarium head blight (FHB) is a disease problem (primarily caused by Fusarium graminearum Schwabe) that affects the quality and yield of barley (Hordeum vulgare L.) grain. The objectives of this study were to identify the location of quantitative trait loci (QTL) for resistance to FHB in a two-rowed by six-rowed population, to examine the association of FHB resistance with heading date and the Vrs1 (two-rowed spike morphology) locus, to validate the location of the major FHB resistance QTL primarily detected in the field, and to identify simple sequence repeat (SSR) markers linked to the QTL for FHB resistance. We created a genetic map of 143 molecular markers from a population derived from the parents Fredrickson (two-rowed, moderately resistant) and Stander (six-rowed, susceptible). The Fredrickson/Stander population was evaluated in two field environments by a grain spawn inoculation method, two field environments by a spray inoculation, and two greenhouse environments. QTL analysis detected three distinct regions on chromosome 2(2H) associated with FHB resistance; two of these regions were also associated with resistance to deoxynivalenol (DON) accumulation. One FHB resistance QTL was also associated with heading date, while another FHB resistance QTL was found associated with the Vrs1 locus. The third FHB resistance QTL was detected only in the greenhouse, but was coincident with a QTL for resistance to DON accumulation in the field. All three QTL were detected in the greenhouse, indicating that this environment may be useful for selecting FHB resistant barley genotypes. SSR markers were identified that are linked with each QTL and could prove useful for marker-assisted trait manipulation. Finally, the two major QTL detected in the field were validated using an independent population with Fredrickson and Stander parents
Germplasm	Stander (barley) Fredrickson (barley) M81 (barley)
Locus	CDO580 [ Show all 143 ]
Map Data	Barley, FxS, FHB QTL
QTL	[ Hide all but 1 of 48 ] QFhs.umn-7H QFhs.umn-2H.1 QFhs.umn-2H.2 QFhs.umn-2H.3 QFhs.umn-2H.4 QFhs.umn-2H.5 QFhs.umn-2H.6 QFhs.umn-2H.7 QFhs.umn-3H.1 QFhs.umn-3H.2 QFhs.umn-1H QFhs.umn-6H .1 QFhs.umn-6H .2 QHD.umn-7H.1 QHD.umn-7H.2 QHD.umn-2H.1 QHD.umn-2H.2 QHD.umn-2H.3 QHD.umn-3H QHD.umn-1H QHD.umn-5H.1 QHD.umn-5H.2 QDon.umn-2H.1 QDon.umn-2H.2 MetaQ.FHB_1H_4 MetaQ.HD_1H_1 MetaQ.FHB_2H_1 MetaQ.FHB_2H_18 MetaQ.FHB_2H_29 MetaQ.FHB_2H_36 MetaQ.FHB_2H_37 MetaQ.FHB_2H_40 MetaQ.FHB_2H_43 MetaQ.DON_2H_24 MetaQ.DON_2H_26 MetaQ.HD_2H_14 MetaQ.HD_2H_23 MetaQ.HD_2H_24 MetaQ.FHB_3H_4 MetaQ.FHB_3H_5 MetaQ.HD_3H_1 MetaQ.HD_5H_1 MetaQ.HD_5H_2 MetaQ.FHB_6H_4 MetaQ.FHB_6H_9 MetaQ.FHB_7H_10 MetaQ.HD_7H_3 MetaQ.HD_7H_7
Keyword	agronomic traits [ Show all 43 ]

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