SSR-Markers of Genes for Resistance to Downy Mildew in Sunflower

Abstract

13 sunflower tester lines for resistance to downy mildew were genotyped with 34 SSR markers corresponding to linkage groups 1, 8 and 13 and covering a genetic distance of 10 сМ to the clusters of Pl genes. Validity of some markers proposed to identification of Pl6, Pl8, Pl13, Pl ARG were investigated. Alleles of ORS509, ORS610, ORS1182, ORS1039 were discovered as markers to Pl ARG. Alleles identified as specific to definite lines may be useful for facilitating of marker-assisted selection program aimed at creation of downy mildew resistant sunflower variaties.