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- Title
Introgression of stem rust resistance genes SrTA10187 and SrTA10171 from Aegilops tauschii to wheat.
- Authors
Olson, Eric; Rouse, Matthew; Pumphrey, Michael; Bowden, Robert; Gill, Bikram; Poland, Jesse
- Abstract
Aegilops tauschii, the diploid progenitor of the wheat D genome, is a readily accessible germplasm pool for wheat breeding as genes can be transferred to elite wheat cultivars through direct hybridization followed by backcrossing. Gene transfer and genetic mapping can be integrated by developing mapping populations during backcrossing. Using direct crossing, two genes for resistance to the African stem rust fungus race TTKSK (Ug99), were transferred from the Ae. tauschii accessions TA10187 and TA10171 to an elite hard winter wheat line, KS05HW14. BC mapping populations were created concurrently with developing advanced backcross lines carrying rust resistance. Bulked segregant analysis on the BC populations identified marker loci on 6DS and 7DS linked to stem rust resistance genes transferred from TA10187 and TA10171, respectively. Linkage maps were developed for both genes and closely linked markers reported in this study will be useful for selection and pyramiding with other Ug99-effective stem rust resistance genes. The Ae. tauschii-derived resistance genes were temporarily designated SrTA10187 and SrTA10171 and will serve as valuable resources for stem rust resistance breeding.
- Subjects
PUCCINIA graminis; PLANT genetics; AEGILOPS; WHEAT genetics; PLANT germplasm; PLANTS; BIOMARKERS
- Publication
Theoretical & Applied Genetics, 2013, Vol 126, Issue 10, p2477
- ISSN
0040-5752
- Publication type
Article
- DOI
10.1007/s00122-013-2148-z