Natural variation in the OsAFB2 promoter enhances rice seedling emergence under submergence.
Seedling emergence is a key adaptive trait for water direct-seeded rice, yet its genetic basis remains poorly understood and elite alleles are limited. Here, a genome-wide association study of 307 rice accessions identifies qSLS4, a locus controlling shoot elongation during seedling emergence under submergence. OsAFB2...