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GrainGenes Two Point Data Report: Lr51/Xaga7-1B

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Two Point Data
Lr51/Xaga7-1B
Locus 1
Lr51
Locus 2
Xaga7-1B
Gene
Lr51 (Triticum)
Gene Class
Reaction to Puccinia recondita Rob. ex Desm.
Trait marker
Yes
Chromosome
1B
Chromosome Arm
1BL
Species
Triticum aestivum
Reference
ReferenceDubcovsky J MAS Wheat. Bringing Genomics to the Wheat Fields. Disease Resistance. Leaf Rust Resistance. Lr51.
Remark
Lr51 is located within a 15 - 30 cM segment of Triticum speltoides chromosome 1S translocated into chromosome 1B.
When a translocated alien fragment is in a wild-type Ph1 background it no longer recombines with wheat chromatin (or only at very low frequencies). Therefore, the segment is inherited as a whole, so if there is a molecular marker located within the fragment containing the translocated gene, the genetic distance to the gene would be zero, even when the physical distance could be very large.
Data Source
Dubcovsky, Jorge