1 23 Molecular Breeding New Strategies in Plant Improvement ISSN 1380-3743 Mol Breeding DOI 10.1007/s11032-014-0186-0 Identification and mapping of quantitative trait loci for leaf rust resistance derived from a tetraploid wheat Triticum dicoccum accession F. Desiderio, D. Guerra, D. Rubiales, L. Piarulli, M. Pasquini, A. M. Mastrangelo, R. Simeone, A. Blanco, L. Cattivelli & G. Vale’