RESISTANCE TO ACIDOVORAX VALERIANELLAE IN CORN SALAD

The invention relates to a corn salad plant with intermediate resistance to Acidovorax valerianellae comprising in its genome a quantitative trait locus (QTL), wherein said QTL confers to the plant resistance to Acidovorax valerianellae and wherein said QTL can be identified with the molecular marker CS-0022531 (SEQ ID NO: 14); said QTL is preferably present in the genome of the seeds of plant ValeriacidoR, NCIMB accession number 43500. The QTL is preferably characterized by defined alleles of several SNPs, especially by a combination of two SNPs forming a haplotype. The invention is also directed to parts of these plants with A. valerianellae resistance phenotype, as well as progeny, to the use of these plants for introgressing the resistance in another genetic background, as well as to different methods for obtaining corn salad plants or seeds with increased resistance to infection by A. valerianellae.