Quantitative Trait Loci from Two Genotypes of Oat (Avena sativa) Conditioning Resistance toPuccinia coronata

• DOI: 10.1094/phyto-04-14-0114-r
• Publication Date: 2014-08-14T21:09:57Z
• Authors: Ebrahiem M. Babiker; Tyler C. Gordon; Eric W. Jackson; Shiaoman Chao; Stephen A. Harrison; Martin L. Carson; Don E. Obert; J. Michael Bonman
• Keywords: Avena; Genetic linkage; Inbred strain

Developing oat cultivars with partial resistance to crown rust would be beneficial and cost-effective for disease management. Two recombinant inbred-line populations were generated by crossing the susceptible cultivar Provena two partially resistant sources, CDC Boyer breeding line 94197A1-9-2-2-2-5. A third mapping population was sources validate quantitative trait locus (QTL) results. The three evaluated severity in field at Louisiana State University (LSU) 2009 2010 Cereal Disease Laboratory (CDL) St. Paul, MN, 2009, 2010, 2011. An iSelect platform assay containing 5,744 single nucleotide polymorphisms used genotype populations. From CDL test, linkage analyses revealed QTLs Provena/CDC on chromosome 19A. One of 19A also detected LSU test. Another QTL 12D In Provena/94197A1-9-2-2-2-5 population, only one detected, 13A, 2011 13A from validated Boyer/94197A1-9-2-2-2-5 tests. Comparative analysis significant marker sequences rice genome database 15 candidate genes chromosomes 4 6 rice. These could potential targets cloning parents.