Query (optional) in Class All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data GrainGenes Marker Report: Operon A20[Submit comment/correction] ProbeOperon A20 LocusOPA20-450OPA20-1150Xa20450 TypePCR PCR primersGTTGCGATCC