{
  "id": 12434563,
  "title": "QTL analysis of essential oil, seed shattering, thousand-grain weight and stalk attachment rate in Carum carvi",
  "url": "https://urgent.news/2026/10/06/qtl-analysis-of-essential-oil-seed-shattering-thousand-grain-weight",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-06T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.10.01.755638v1?rss=1"
  },
  "original_language": "en",
  "account": "Caraway (Carum carvi L.) is a medicinal and aromatic plant in the Apiaceae family, appreciated for its essential oil containing the main terpenoids carvone and limonene. While the essential oil content is crucial for quality, low seed shattering and high thousand-grain weight (TGW) are critical factors influencing seed yield. Molecular breeding tools are limited in Apiaceae, except for carrot, leading to a QTL mapping study of these seed-related traits in two F2 populations (E(N(P1) = 236; N(P2) = 266)).\n\nIn population P1, with non-shattering maternal parent Rekord, at least one shattering locus on LG03 (9.9% PVE) was identified. Moreover, loci linked to essential oil (LG08, 10.5% PVE) and TGW (LG09, 11.1% PVE) were detected. In population P2, six essential-oil loci (LG02-06, LG10; combined PVE: 49.2%) were found, including five affecting both carvone and limonene and one exclusive to limonene. Additionally, a major QTL for TGW was mapped to LG02 (15.6% PVE). For stalk attachment rate, one minor QTL was detected on LG07 (8.5% PVE), with no QTL co-localized with the primary shattering locus.\n\nThe researchers developed and validated 26 diagnostic PACE markers to cover five key QTLs, aiming to facilitate fine-mapping efforts in Carum carvi breeding.",
  "summary": "Caraway (Carum carvi L., 2n = 2x = 20) is a medicinal and aromatic plant of the Apiaceae family valued for its essential oil with the major terpenoids carvone and limonene. While the essential oil content represents an important quality trait, low seed shattering and high thousand-grain weight (TGW) are key determinants of seed yield. As molecular tools remain scarce within Apiaceae breeding…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}