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GrainGenes Marker Report: Fr-B2 (Triticum)

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Gene	Fr-B2 (Triticum)
Gene Class	Frost resistance
Locus	Fr-B2
Reference	Toth B et al. (2003) Mapping genes affecting flowering time and frost resistance on chromosome 5B of wheat Theoretical and Applied Genetics 107:509-514.
URL	Fr-B2 gene at Komugi: Catalogue of Gene Symbols for Wheat
Comment	QTL mapped on chromosome 5BL, linked to Xgwm639-5B (this QTL explained 12-31% of the variance in frost tolerance). Xgwm639-5B mapped close to Xmwg914-5B, and to Xbcd508-5B, a marker located at the peak of the Fr-A2 QTL. This data suggests that this locus is more likely orthologous to Fr-2 than to Fr-1 (Toth et al., 2003).
Info Source	McIntosh RA et al. (2013) Catalogue of Gene Symbols for Wheat- 2013 Edition Catalogue of Gene Symbols for Wheat.
Data Curator	Cooper, Laurel Oct-2020
Locus Associated with Gene	Fr-B2
Type	Trait
Chromosome	5B
Chromosome Arm	5BL
Map	Wheat-Composite2004-5B 69
	[ Show Nearby Loci ]
Species	Triticum aestivum
Probe	WMS639
Associated Gene	Fr-B2 (Triticum)
Gene Class	Frost resistance
Reference	Toth B et al. (2003) Mapping genes affecting flowering time and frost resistance on chromosome 5B of wheat Theoretical and Applied Genetics 107:509-514.
Remark	Trait marker Xgwm639-5B Nearby marker on Composite map: Xgwm639.2 Position on Composite map estimated by GrainGenes.

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