QTL mapping integrated with BSA-Seq analysis identifies a novel gene conferring resistance to brown planthopper from common wild rice (Oryza rufipogon Griff.)

The brown planthopper (Nilaparvata lugens Stål, BPH) is one of the most destructive rice pests worldwide. GXU202 a germplasm common wild (Oryza rufipogon Griff.) with high resistance to BPH. In this study, genetic analysis indicated that BPH-resistant phenotype controlled by major gene. Through combination and comparison QTL linkage BSA-seq analyses, novel gene locus, BPH41, conferring BPH was identified. This locus finely mapped 116-kb region delimited W4-4–3 W1-6–3 on chromosome 4. markers D01031 D01045 showed accuracy in predicting phenotypes resistant BPH, suggesting their reliability for marker-assisted selection BPH41 breeding varieties. present identification will establish foundation further map-based cloning functional characterization