Identification of a key locus, qRL8.1, associated with root length traits during seed germination under salt stress via a genome-wide association study in rice.

ABSTRACT:

Background

Salt stress is a major abiotic constraint limiting rice (Oryza sativa L.) production worldwide, particularly in saline-affected regions. Improving salt tolerance at the seed germination stage is crucial for increasing stand establishment and yield stability, especially under direct seeding conditions. Identifying loci associated with salt-tolerant germination and characterizing key candidate genes offers valuable insights for breeding strategies.

Results

We evaluated the salt tolerance of 406 drought-resistant rice accessions at the germination stage under 0, 100, 150, and 200 mM NaCl conditions. Four germination-related traits-germination potential (GP), relative germination potential (RGP), root length (RL), and relative root length (RRL)-were measured. Signific

SUBMITTER: Zhu P 

PROVIDER: S-EPMC11881369 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature