The genetics of Ug99 stem rust resistance in spring wheat variety ‘Linkert‘

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cg.contributor.affiliationUniversity of Minnesotaen
cg.contributor.affiliationKenya Agricultural and Livestock Research Organizationen
cg.contributor.affiliationDebre Zeit Agricultural Research Centeren
cg.contributor.affiliationInternational Maize and Wheat Improvement Centeren
cg.contributor.affiliationUnited States Department of Agricultureen
cg.contributor.donorUnited States Department of Agricultureen
cg.contributor.donorCGIAR Trust Funden
cg.contributor.initiativeAccelerated Breeding
cg.creator.identifierPrabin Bajgain: 0000-0002-3093-5582
cg.creator.identifiersridhar bhavani: 0000-0002-4091-2608
cg.creator.identifierJames Anderson: 0000-0003-4655-6517
cg.creator.identifierMatthew Rouse: 0000-0001-7763-8203
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.3389/fpls.2024.1343148en
cg.isijournalISI Journalen
cg.issn1664-462Xen
cg.journalFrontiers in Plant Scienceen
cg.placeSwitzerlanden
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaGenetic Innovation
cg.subject.impactAreaNutrition, health and food security
cg.volume15en
dc.contributor.authorEdae, Erena A.en
dc.contributor.authorKosgey, Zennah C.en
dc.contributor.authorBajgain, Prabinen
dc.contributor.authorNdung'u, Kimani C.en
dc.contributor.authorGemechu, Ashenafen
dc.contributor.authorBhavani, Sridharen
dc.contributor.authorAnderson, James A.en
dc.contributor.authorRouse, Matthew N.en
dc.date.accessioned2024-11-21T15:00:47Zen
dc.date.available2024-11-21T15:00:47Zen
dc.identifier.urihttps://hdl.handle.net/10568/162519
dc.titleThe genetics of Ug99 stem rust resistance in spring wheat variety ‘Linkert‘en
dcterms.abstractWheat stem rust caused by Puccinia graminis f. sp. tritici (Pgt) threatens wheat production worldwide. The objective of this study was to characterize wheat stem rust resistance in ‘Linkert’, a variety with adult plant resistance effective to emerging wheat stem rust pathogen strain Ug99. Two doubled haploid (DH) populations and one recombinant inbred line (RIL) population were developed with ‘Linkert’ as a stem rust resistant parent. Hard red spring wheat variety ‘Forefront’ and genetic stock ‘LMPG’ were used as stem rust susceptible parents of the DH populations. Breeding line ‘MN07098-6’ was used as a susceptible parent of the RIL population. Both DH and RIL populations with their parents were evaluated both at the seedling stage and in the field against Pgt races. Genotyping data of the DH populations were generated using the wheat iSelect 90k SNP assay. The RIL population was genotyped by genotyping-by-sequencing. We found QTL consistently associated with wheat stem rust resistance on chromosome 2BS for the Linkert/Forefront DH population and the Linkert/MN07098-6 RIL population both in Ethiopia and Kenya. Additional reliable QTL were detected on chromosomes 5BL (125.91 cM) and 4AL (Sr7a) for the Linkert/LMPG population in Ethiopia and Kenya. Different QTL identified in the populations reflect the importance of examining the genetics of resistance in populations derived from adapted germplasm (Forefront and MN07098-6) in addition to a genetic stock (LMPG). The associated markers in this study could be used to track and select for the identified QTL in wheat breeding programs.en
dcterms.accessRightsOpen Access
dcterms.available2024-03-07
dcterms.bibliographicCitationEdae, E. A., Kosgey, Z. C., Bajgain, P., Ndung’u, K. C., Gemechu, A., Bhavani, S., Anderson, J., & Rouse, M. N. (2024). The genetics of Ug99 stem rust resistance in spring wheat variety ‘Linkert‘. Frontiers in Plant Science, 15, 1343148. https://doi.org/10.3389/fpls.2024.1343148en
dcterms.extent1343148en
dcterms.hasVersionhttps://hdl.handle.net/10883/23128en
dcterms.issued2024-03-07
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherFrontiers Media SAen
dcterms.subjectdisease resistanceen
dcterms.subjectquantitative trait locien
dcterms.subjectstem rusten
dcterms.subjectwheaten
dcterms.typeJournal Article

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