{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T11:53:53Z","timestamp":1791633233694,"version":"4.3.4"},"reference-count":51,"publisher":"Oxford University Press (OUP)","license":[{"start":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T00:00:00Z","timestamp":1791590400000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100012009","name":"United Soybean Board","doi-asserted-by":"publisher","award":["25-209-S-B-3-A"],"award-info":[{"award-number":["25-209-S-B-3-A"]}],"id":[{"id":"10.13039\/100012009","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Georgia Seed Development"},{"name":"University of Georgia Innovation Gateway"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Southern stem canker (SSC), caused by Diaporthe aspalathi, is a major soybean disease causing yield losses of up to 80%. Genetic resistance is the most effective and sustainable strategy for managing SSC. \u201cTracy-M\u201d is a cultivar with broad resistance to D. aspalathi isolates; however genomic location of the resistance is unknown. To determine the genetic basis of SSC resistance in Tracy-M and its derived progeny, two Tracy-M-derived lines, D85-10404 and D85-10412, were each crossed with a common susceptible parent, G81-2057, to develop recombinant inbred line (RIL) populations. Quantitative Trait Locus (QTL) sequencing (QTL-seq) and composite interval mapping (CIM) identified a common major QTL on chromosome (Chr) 2 in both lines corresponding to Rdm1 locus defined from a previous genetic study. Additionally, second QTL located on Chr 17 (Rdm2 locus) was only detected in the D85-10412-derived RIL population. To validate Tracy-M-derived resistance, an F2:3 population from G00-3213 \u00d7 Tracy-M was developed. Bulked segregant analysis (BSA) and CIM identified a major QTL on Chr 14, overlapping the previously reported Rdm3 locus in \u201cCrockett\u201d and PI 398469, while Rdm1 was not detected, suggesting genetic background effects. Kompetitive allele-specific PCR (KASP) markers were developed to facilitate selection of Rdm1, Rdm2, and Rdm3 resistance alleles in soybean breeding programs.<\/jats:p>","DOI":"10.1093\/g3journal\/jkag278","type":"journal-article","created":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T11:48:08Z","timestamp":1791632888000},"source":"Crossref","is-referenced-by-count":0,"title":["Genetic loci resistant to soybean southern stem canker in Tracy-M and its progeny"],"prefix":"10.1093","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7850-6656","authenticated-orcid":false,"given":"M Habib","family":"Widyawan","sequence":"first","affiliation":[{"name":"Institute of Plant Breeding, Genetics, and Genomics, and Department of Crop and Soil Sciences, University of Georgia , Athens, GA 30602 ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James W","family":"Buck","sequence":"additional","affiliation":[{"name":"Department of Plant Pathology, University of Georgia , Griffin, GA 30223 ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4114-9509","authenticated-orcid":false,"given":"Zenglu","family":"Li","sequence":"additional","affiliation":[{"name":"Institute of Plant Breeding, Genetics, and Genomics, and Department of Crop and Soil Sciences, University of Georgia , Athens, GA 30602 ,","place":["United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,10,10]]},"reference":[{"key":"2026101007475996800_jkag278-B1","author":"Andrews","year":"2010"},{"key":"2026101007475996800_jkag278-B2","doi-asserted-by":"publisher","DOI":"10.1094\/PD-69-641","article-title":"Soybean stem canker: an emerging disease problem","volume":"69","author":"Backman","year":"1985","journal-title":"Plant 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