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- Title
Mapping the quantitative field resistance to stripe rust in a hard winter wheat population "Overley" × "Overland".
- Authors
Mustahsan, Wardah; Guttieri, Mary J.; Bowden, Robert L.; Garland‐Campbell, Kimberley; Jordan, Katherine; Bai, Guihua; Zhang, Guorong
- Abstract
Stripe (yellow) rust, caused by Puccinia striiformis f. sp. tritici, is a devastating disease of wheat (Triticum aestivum) worldwide. In commercial production, stripe rust reduces grain quality, grain yield, and forage yield. This study was conducted to identify quantitative trait locus (QTL) associated with field resistance to stripe rust in hard winter wheat. Stripe rust infection type and severity were rated in recombinant inbred lines (RILs, n = 204) derived from a cross between hard red winter wheat cultivars "Overley" and "Overland" in replicated field trials in the Great Plains and Pacific Northwest. RILs (n = 184) were genotyped with reduced representation sequencing to produce single nucleotide polymorphism (SNP) markers from alignment to the "Chinese Spring" reference sequence, IWGSC v2.1, and from alignment to the reference sequence for "Jagger," which is a parent of Overley. Genetic linkage maps were developed independently from each set of SNP markers. QTL analysis identified genomic regions on chromosome arms 2AS, 2BS, 2BL, and 2DL that were associated with stripe rust resistance using multi‐environment best linear unbiased predictors for stripe rust infection type and severity. Results for the two linkage maps were very similar. PCR‐based SNP marker assays associated with the QTL regions were developed to efficiently identify these genomic regions in breeding populations. Core Ideas: Combinations of partially effective stripe rust resistance alleles provide effective field resistance.In the Overley × Overland population, four genomic regions contributed to field resistance to stripe rust.Breeder‐friendly markers were developed to track these partially effective resistance alleles in wheat breeding.
- Subjects
GREAT Plains; WINTER wheat; STRIPE rust; RUST diseases; LOCUS (Genetics); PUCCINIA striiformis; SINGLE nucleotide polymorphisms; CROP yields
- Publication
Crop Science, 2023, Vol 63, Issue 4, p2050
- ISSN
0011-183X
- Publication type
Article
- DOI
10.1002/csc2.20977