LAUSR

Abstract Bacterial wilt (BW), caused by the soil-borne Ralstonia solanacearum, is a major disease in cultivated tomato (Solanum lycopersicum L.). Host resistance provides an environment-friendly and cost-effective strategy to control this disease. To investigate quantitative trait loci (QTL) for BW resistance, we conducted a genome-wide association study (GWAS) in a core collection of 191 tomato varieties. The 51 K Axiom® tomato array was used for genotyping and 38,541 confident SNPs were filtered for GWAS. We evaluated disease severity of the core collection in two independent seedling assays following inoculation with race 1 of R. solanacearum. A total of eight marker-trait associations (MTAs) for BW resistance was detected at P