Two QTLs govern the resistance to <i>Sclerotinia minor</i> in an interspecific peanut RIL population

Abstract Sclerotinia blight is a soilborne disease caused by minor Jagger and can produce severe decrease in yield. Cultural management strategies chemical treatment are not completely effective; therefore, growing peanut‐resistant varieties likely to be the most effective control method for this disease. resistance has been identified wild Arachis species further transferred peanut elite cultivars. To identify genome regions conferring within tetraploid genetic background, study evaluated population of recombinant inbred lines (RIL) with introgressed genes from three diploid species: A. cardenasii , correntina batizocoi . Two consistent quantitative trait loci (QTLs), qSbIA04 qSbIB04 located on chromosomes A04 B04, respectively, were identified. The QTL was mapped at 56.39 cM explaining 29% phenotypic variance 13.38 22% overall variance.