J
J. B. Thomas
Researcher at Agriculture and Agri-Food Canada
Publications - 43
Citations - 1561
J. B. Thomas is an academic researcher from Agriculture and Agri-Food Canada. The author has contributed to research in topics: Population & Stem rust. The author has an hindex of 20, co-authored 43 publications receiving 1390 citations.
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Journal ArticleDOI
Fine mapping Fhb1, a major gene controlling fusarium head blight resistance in bread wheat (Triticum aestivum L.)
TL;DR: A major fusarium head blight resistance gene Fhb1 was fine mapped on the distal segment of chromosome 3BS of spring wheat as a Mendelian factor and provided tightly linked markers that can reduce linkage drag associated with marker-assisted selection and assist in the isolation, sequencing and functional identification of the underlying resistance gene.
Journal ArticleDOI
An introgression on wheat chromosome 4DL in RL6077 (Thatcher*6/PI 250413) confers adult plant resistance to stripe rust and leaf rust (Lr67).
Colin W. Hiebert,J. B. Thomas,Brent McCallum,D. Gavin Humphreys,R. M. DePauw,Matthew J. Hayden,Rohit Mago,Wendelin Schnippenkoetter,Wolfgang Spielmeyer +8 more
TL;DR: The leaf rust resistance gene in RL6077 is phenotypically similar to Lr34 which is located on chromosome 7D, but this gene is not involved in any translocation carried by RL60 77 and has been assigned the name Lr67.
Journal ArticleDOI
The evaluation of FHB resistance QTLs introgressed into elite Canadian spring wheat germplasm
Curt A. McCartney,Daryl J. Somers,George Fedak,R. M. DePauw,J. B. Thomas,S. L. Fox,D. G. Humphreys,Odean M. Lukow,Marc E. Savard,Brent McCallum,Jeannie Gilbert,W. Cao +11 more
TL;DR: FHB resistance tended to increase with more FHB resistance alleles introgressed into the elite genetic background, which suggested that marker-assisted selection (MAS) will prove useful for improving F HB resistance in Canadian germplasm.
Journal ArticleDOI
Genetics and mapping of seedling resistance to Ug99 stem rust in Canadian wheat cultivars 'Peace' and 'AC Cadillac'.
Colin W. Hiebert,Tom Fetch,Taye Zegeye,J. B. Thomas,Daryl J. Somers,D. Gavin Humphreys,Brent McCallum,Sylvie Cloutier,Davinder Singh,Doug R. Knott +9 more
TL;DR: While further study is needed to determine the relationship between SrCAD and other Sr genes on chromosome 6DS, SrCad represents a valuable genetic resource for producing stem rust resistant wheat cultivars and is the basis for all of the seedling resistance to Ug99 in Canadian wheat cultivar.
Journal ArticleDOI
Microsatellite tagging of the leaf rust resistance gene Lr16 on wheat chromosome 2BSc.
Curt A. McCartney,Daryl J. Somers,Brent McCallum,J. B. Thomas,D. G. Humphreys,James G. Menzies,P. D. Brown +6 more
TL;DR: Xwmc764, Xgwm210, and Xwmc661 were the most suitable markers for selection of Lr 16 because they had simple PCR profiles, numerous alleles, high polymorphism information content (PIC), and were tightly linked to Lr16.