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Genome-wide association mapping of barley yellow dwarf virus tolerance in spring oat (Avena sativa L.)

Permanent URL:
http://handle.nal.usda.gov/10113/62916
File:
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Abstract:
Barley yellow dwarf (BYD) is one of the most destructive diseases of cereal crops worldwide. Barley yellow dwarf viruses (BYDVs) are responsible for BYD and affect many cereals including oat (Avena sativa L.). Until recently, the molecular marker technology in oat has not allowed for many marker-trait association studies to determine the genetic mechanisms for tolerance. A genome-wide association study (GWAS) was performed on 428 spring oat lines using a recently developed high-density oat single nucleotide polymorphism (SNP) array as well as a SNP-based consensus map. Marker-trait associations were performed using a Q-K mixed model approach to control for population structure and relatedness. Six significant SNP-trait associations representing two QTL were found on chromosomes 3C and 18D. This is the first report of BYDV tolerance QTL on chromosome 3C and 18D. Haplotypes using the two QTL were evaluated and distinct classes for tolerance were identified based on the number of favorable alleles. A large number of lines carrying both favorable alleles were observed in the panel.
Author(s):
Bradley J. Foresman , Rebekah E. Oliver , Eric W. Jackson , Shiaoman Chao , Marcio P. Arruda , Frederic L. Kolb
Note:
USDA Scientist Submission
Source:
Plos One 2016 5 13 v.11 no.5
Language:
English
Year:
2016
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.