Integrative linkage mapping, GWAS, and RNA-Seq analysis unravel the genetic architecture and candidate genes for drought tolerance in <i>Chrysanthemum</i> interspecific F₁ progeny.

ABSTRACT: Drought stress is a major environmental constraint that severely impacts plant production. However, the genetic basis is primarily misunderstood in chrysanthemum species. The objectives of this study are to examine the genetic variation of drought tolerance in reciprocal F₁ progenies of Chrysanthemum dichrum (drought-tolerant) and Chrysanthemum nankingense (drought-sensitive) and identify candidate genes by integrating linkage mapping, genome-wide association study (GWAS), and RNA-seq analysis. The results revealed extensive variation for the investigated traits in response to drought stress and notable genetic divergence in drought tolerance between the reciprocal crosses. This confirms that the hybridization direction influenced drought tolerance phenotypes. A hi

SUBMITTER: Lu Z 

PROVIDER: S-EPMC12528654 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature