Fine mapping of the major-effect QTL <i>qPHS4.1</i> revealed a <i>CsDOG1</i> gene controlling pre-harvest sprouting in cucumber (<i>Cucumis sativus</i> L.).

ABSTRACT: Pre-harvest sprouting (PHS) in cucumber (Cucumis sativus L.) significantly reduces seed quality and yields in seed industry. The identification of PHS-associated quantitative trait loci (QTL) provides valuable genetic insights for improving PHS resistance in cucumber breeding practices. In this study, near-isogenic lines (NILs) targeting the major effect QTL locus were developed by the backcrossing of the highly PHS-sensitive donor parent P60 with the PHS-resistant recurrent parent Q12. PHS phenotypes of qPHS4.1 ^Q12 and qPHS4.1 ^P60 were consistent with the respective Q12 and P60, confirming that the qPHS4.1 locus has a major-effect on PHS in cucumber. Using BC₄F₂ and BC₄F₃ populations, the qPHS

SUBMITTER: Cao M 

PROVIDER: S-EPMC12547290 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature