INTER HACRE-1 RETROTRANSPOSON LENGTH POLYMORPHISM IS NOT CONSERVED THROUGHT THE SUNFLOWER LINES

Abstract

Twelve sunflower lines used in breeding programmes were tested for IRAP polymorphism of HACRE1 retrotransposon. Using a single primer, a total of 96 bands among the accessions were scored and the number of polymorphic bands was 42. Most of the analysed accesions have the „881A or B“ line in their pedigrees, but none of them have the same IRAP profile or are showed as the same when Jaccard dissimilarity coefficient was applied. The average Jaccard’s Dissimilarity Index for the used primer range within the whole possible range and as the most distinct lines are reported 2867A and 1957A, 1831A and 1961A, 1957A and 1961A. Dendrogram of the analysed lines comprises from the three dominant branches, where the lines with the codes 1831A and 1957A are shown as the most unsimilar to the others.