{
  "abstract": "The dwarfing allele Rht-B1p has been characterised only against the wild-type Rht-B1a. Breeders need the contrast with Rht-B1b, the allele of most semi-dwarf wheats. We tested the two for agronomic equivalence within one biparental spring wheat population segregating for Rht-B1p, Rht-B1b and Ppd-D1 (3,147 plants, 119 lines, two seasons), with margins of ±5 cm for height, ±2 days for phenology, and 5% and 10% of the trait mean, using linear mixed models on plot means. No difference was demonstrated for any of the 14 traits. After Holm adjustment, the two haplotypes were equivalent at the 5% margin for plant height and internode number, and at the 10% margin for six traits, and spike density, which was treated as exploratory. The three phenological traits were inconclusive. Rht-B1p reduces height by 21–25 cm relative to the wild type. Between the haplotypes, the difference was +0.18 cm (90% CI −1.55 to +1.91). The design was sensitive: within the Rht-B1p class, Ppd-D1b delayed heading by 4.74 and flowering by 4.15 days. No Rht-B1 × Ppd-D1 interaction was found. In the F3 families of 2018, the Rht-B1p class was 6.0 cm shorter; an allelic difference may appear in some backgrounds. In this population, at one location over two seasons, the Rht-B1p haplotype was agronomically equivalent to the Rht-B1b haplotype in plant height. Plot yield, tillering, lodging and establishment remain to be tested.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Brief Research Report",
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "name": "Pavel Kroupin"
    },
    {
      "name": "Lubov Nazarova"
    },
    {
      "name": "Viktoria Voronezhskaya"
    },
    {
      "name": "Anastasiya Chernook"
    },
    {
      "name": "Aleksandra Kroupina"
    },
    {
      "name": "Marina Klimushina"
    },
    {
      "name": "Gennady Karlov"
    },
    {
      "name": "Mikhail Divashuk"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4ek5628bgpxvw.bib",
  "cited_by": 0,
  "doi": "10.3389/fpls.2026.1983351",
  "fulltext_url": null,
  "id": "4ek5628bgpxvw",
  "issns": [
    "1664-462X"
  ],
  "landing_url": "https://www.frontiersin.org/articles/10.3389/fpls.2026.1983351",
  "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": [
    [
      "feed-journal",
      "biology/plant-biology"
    ]
  ],
  "openalex": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-09",
  "publisher": "Frontiers Media SA",
  "ris": "https://research.draconitic.com/paper/4ek5628bgpxvw.ris",
  "sources": [
    {
      "first_seen": "2026-11-09T12:20:32Z",
      "native_id": "10.3389/fpls.2026.1983351",
      "source": "feed-frontiers",
      "url": "https://www.frontiersin.org/articles/10.3389/fpls.2026.1983351"
    },
    {
      "first_seen": "2026-11-09T12:23:05Z",
      "native_id": "10.3389/fpls.2026.1983351",
      "source": "crossref",
      "url": "https://www.frontiersin.org/articles/10.3389/fpls.2026.1983351/full"
    }
  ],
  "subjects": [
    {
      "field": "biology",
      "origin": "feed-journal:biology/plant-biology",
      "subfield": "plant-biology"
    }
  ],
  "title": "Rht-B1p as an agronomically equivalent alternative to Rht-B1b in a spring bread wheat population",
  "title_text": "Rht-B1p as an agronomically equivalent alternative to Rht-B1b in a spring bread wheat population",
  "type": "peer-reviewed",
  "updated_at": "2026-11-10T00:21:34Z",
  "url": "https://research.draconitic.com/paper/4ek5628bgpxvw",
  "venue": "Frontiers in Plant Science",
  "versions": []
}