Multi-location wheat stripe rust QTL analysis: genetic background and epistatic interactions

KEY MESSAGE : Epistasis and genetic background were important influences on expression of stripe rust resistance in two wheat RIL populations, one with resistance conditioned by two major genes and the other conditioned by several minor QTL. Stripe rust is a foliar disease of wheat (Triticum aestivu...

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Bibliographic Details
Published in:Theoretical and applied genetics 2015-07, Vol.128 (7), p.1307-1318
Main Authors: Vazquez, M. Dolores, Zemetra, Robert, Peterson, C. James, Chen, Xianming M., Heesacker, Adam, Mundt, Christopher C.
Format: Article
Language:English
Subjects:
Agriculture
Basidiomycota - pathogenicity
Biochemistry
Biomedical and Life Sciences
Biotechnology
Chromosome Mapping
Chromosomes
Chromosomes, Plant
Disease
Disease Resistance - genetics
Diseases and pests
DNA, Plant - genetics
Environment
Epistasis, Genetic
Genes
Genes, Plant
Genetic aspects
Genetics, Population
Genotype
Health aspects
Life Sciences
Microsatellite Repeats
Observations
Original Paper
Pathogens
Phenotype
Plant Biochemistry
Plant Breeding/Biotechnology
Plant Diseases - genetics
Plant Diseases - microbiology
Plant Genetics and Genomics
Plant pathology
Plant resistance
Plant-pathogen relationships
Prevention
Puccinia striiformis
Quantitative genetics
Quantitative Trait Loci
Rusts (Fungi)
Soil sciences
Triticum - genetics
Triticum aestivum
Wheat
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Summary:KEY MESSAGE : Epistasis and genetic background were important influences on expression of stripe rust resistance in two wheat RIL populations, one with resistance conditioned by two major genes and the other conditioned by several minor QTL. Stripe rust is a foliar disease of wheat (Triticum aestivum L.) caused by the air-borne fungus Puccinia striiformis f. sp. tritici and is present in most regions around the world where commercial wheat is grown. Breeding for durable resistance to stripe rust continues to be a priority, but also is a challenge due to the complexity of interactions among resistance genes and to the wide diversity and continuous evolution of the pathogen races. The goal of this study was to detect chromosomal regions for resistance to stripe rust in two winter wheat populations, ‘Tubbs’/‘NSA-98-0995’ (T/N) and ‘Einstein’/‘Tubbs’ (E/T), evaluated across seven environments and mapped with diversity array technology and simple sequence repeat markers covering polymorphic regions of ≈1480 and 1117 cM, respectively. Analysis of variance for phenotypic data revealed significant (P 
ISSN:0040-5752
1432-2242
DOI:10.1007/s00122-015-2507-z