SERPINB9 and benign prostatic hyperplasia: (2020) successfully aggregated seven to 10 genes/QTLs targeting various biotic and abiotic stressors (e.g., Pi9 gene for blast; Xa4, xa5, xa13, and Xa21 genes for bacterial leaf blight; Bph3 and Bph17 genes for BPH; Gm4 and Gm8 genes for rice gall midge) into the Swarna genetic background using simple sequence repeat (SSR) and gene-based markers, which already has QTLs for drought tolerance (qDTY1.1 and qDTY3.1).