1 23 Molecular Breeding New Strategies in Plant Improvement ISSN 1380-3743 Mol Breeding DOI 10.1007/s11032-012-9712-0 Genetic mapping of a leaf rust resistance gene in the former Yugoslavian barley landrace MBR1012 J. König, D. Kopahnke, B. J. Steffenson, N. Przulj, T. Romeis, M. S. Röder, F. Ordon & D. Perovic