Donors of spring bread wheat (Triticum aestivum L.) field resistance to leaf rust (Puccinia recondita Rob. ex Desm.)

Progeny analysis of field resistance to leaf rust in two varieties of spring wheat (Simbirtsit and Ecada 70) and two breeding lines (L.328/02 and L.370/03) showed that the resistance is determined by a two complementary genes, one of which Lr34. Several varieties (including Ecada 70) using test-clonal analysis are postulated the presence of gene Lr48. It is assumed that the effect of field resistance is determined by the complementary interaction of at least one APR- gene ( Lr34, Lr46, Lr67 ) and at least one “seedling” gene.