{
  "abstract": "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. “Tracy-M” 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 × Tracy-M was developed. Bulked segregant analysis (BSA) and CIM identified a major QTL on Chr 14, overlapping the previously reported Rdm3 locus in “Crockett” 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.",
  "abstract_shown": true,
  "affiliations": [
    "Institute of Plant Breeding, Genetics, and Genomics, and Department of Crop and Soil Sciences, University of Georgia , Athens, GA 30602 ,",
    "Department of Plant Pathology, University of Georgia , Griffin, GA 30223 ,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "M Habib Widyawan",
      "orcid": "0000-0002-7850-6656"
    },
    {
      "affs": [
        1
      ],
      "name": "James W Buck"
    },
    {
      "affs": [
        0
      ],
      "name": "Zenglu Li",
      "orcid": "0000-0003-4114-9509"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fnxc41vwmt497.bib",
  "cited_by": 0,
  "doi": "10.1093/g3journal/jkag278",
  "fulltext_url": null,
  "id": "fnxc41vwmt497",
  "issns": [
    "2160-1836"
  ],
  "landing_url": "https://academic.oup.com/g3journal/advance-article/doi/10.1093/g3journal/jkag278/8907168",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1110|Soybean genetics and cultivation"
    ]
  ],
  "openalex": "W7221342568",
  "pdf_url": "https://academic.oup.com/g3journal/advance-article-pdf/doi/10.1093/g3journal/jkag278/71836781/jkag278.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-10",
  "publisher": "Oxford University Press (OUP)",
  "ris": "https://research.draconitic.com/paper/fnxc41vwmt497.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:09Z",
      "native_id": "10.1093/g3journal/jkag278",
      "source": "crossref",
      "url": "https://academic.oup.com/g3journal/advance-article/doi/10.1093/g3journal/jkag278/8907168"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "openalex:1110|Soybean genetics and cultivation",
      "subfield": "plant-biology"
    }
  ],
  "title": "Genetic loci resistant to soybean southern stem canker in Tracy-M and its progeny",
  "title_text": "Genetic loci resistant to soybean southern stem canker in Tracy-M and its progeny",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:09Z",
  "url": "https://research.draconitic.com/paper/fnxc41vwmt497",
  "venue": "G3: Genes, Genomes, Genetics",
  "versions": []
}