{
  "abstract": "Modern crop breeding has increased yield under monoculture stands, but the mechanisms underlying this improvement remain incompletely understood. We tested whether genotype-dependent reduction of competition, whereby plants adjust competitive responses according to neighbor genetic identity, contributes to yield maintenance in modern common wheat cultivars. We conducted a root-exudate application experiment and two competition experiments using three common wheat (Triticum aestivum L.) landraces and one modern cultivar, Norin 61. Norin 61 exhibited little change in shoot-to-root allocation in response to root exudates from the same cultivar compared with distilled water, whereas it increased shoot-to-root allocation exposed to root exudate from different cultivars. Moreover, shoot-to-root allocation increased with decreasing genetic relatedness between neighboring cultivars in common wheat plants. In competition experiments, greater shoot-to-root allocation was associated with stronger suppression of competitors. Norin 61 maintained grain biomass under the same-cultivar competition compared to solitary conditions but exhibited substantial yield reductions when competing with different cultivars, whereas these patterns were weaker or absent in landraces. These results suggest that genotype-dependent reduction of competition may contribute to yield maintenance in modern wheat cultivars and provide a new perspective on how crop breeding has shaped plant-plant interactions in monoculture stands.",
  "abstract_shown": true,
  "affiliations": [
    "Kyoto University"
  ],
  "article_type": "New results",
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "name": "N. Kosugi"
    },
    {
      "name": "T. Kaneko"
    },
    {
      "name": "K. Yoshida"
    },
    {
      "affs": [
        0
      ],
      "name": "A. Yamawo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3p8aqvpq1ykq0.bib",
  "cited_by": 0,
  "doi": "10.64898/2026.09.07.749990",
  "fulltext_url": "https://www.biorxiv.org/content/10.64898/2026.09.07.749990v1.full",
  "id": "3p8aqvpq1ykq0",
  "issns": [],
  "landing_url": "https://www.biorxiv.org/content/10.64898/2026.09.07.749990v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "biorxiv",
      "ecology"
    ],
    [
      "openalex",
      "1110|Allelopathy and phytotoxic interactions"
    ]
  ],
  "openalex": "W7212370590",
  "pdf_url": "https://www.biorxiv.org/content/10.64898/2026.09.07.749990v1.full.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3p8aqvpq1ykq0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:41Z",
      "native_id": "10.64898/2026.09.07.749990",
      "source": "biorxiv",
      "url": "https://www.biorxiv.org/content/10.64898/2026.09.07.749990v1"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "biorxiv:ecology",
      "subfield": "ecology"
    }
  ],
  "title": "Genotype-dependent reductions of competition are associated with yield maintenance in a modern common wheat Triticum aestivum L. cultivar",
  "title_text": "Genotype-dependent reductions of competition are associated with yield maintenance in a modern common wheat Triticum aestivum L. cultivar",
  "type": "preprint",
  "updated_at": "2026-10-30T12:21:41Z",
  "url": "https://research.draconitic.com/paper/3p8aqvpq1ykq0",
  "venue": "bioRxiv",
  "versions": []
}