Abstract
Inter-retrotransposon amplified polymorphisms (IRAPs) and retrotransposon-microsatellite amplified polymorphisms (REMAPs) were used to detect retrotransposon integration events and genetic diversity in 101 Iranian bread wheat (Triticum aestivum L.) cultivars and breeding lines. The 9 IRAP primers amplified 128 loci, and 20 REMAP primers amplified 263 loci. Percentage of polymorphic loci, average expected heterozygosity, number of effective alleles, and Shannon's information index for the REMAP markers were slightly higher than those for the IRAP markers. The same estimated parameters calculated for native and nonnative retrotransposons were not considerably different. A Mantel test between IRAP and REMAP cophenetic matrices evidenced no significant correlation. Cluster analysis based on the Dice similarity coefficient and complete linkage algorithm using IRAP+REMAP loci identified five groups among the genotypes studied that could be applied as crossing parents in T. aestivum breeding programs.
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