Dissection of the oligogenic resistance to cucumber mosaic virus in the melon accession pi 161375

Abstract

Resistance to Cucumber mosaic virus (CMV) in the exotic melon accession PI 161375, cultivar “Sonwang Charmi” (SC) had previously been described as oligogenic, recessive and quantitative, with a major QTL residing in linkage group XII (LGXII). We have used a collection of Near Isogenic Lines (NILs) with introgressions of SC into the genome of the susceptible accession Piel de Sapo (PS) to further characterize this resistance. Infection of NILs carrying introgressions on LGXII showed that only NIL SC12-1 was resistant to CMV strains P9 and P104.82, but not to strains M6 and TL.