REACTION OF TURKISH BARLEY ACCESSIONS TO CANADIAN BARLEY PATHOGENS

Recent changes in the virulence patterns of Canadian barley pathogens have necessitated the search for new sources of genetic resistance in barley. Evaluation of 176 Turkish barley accessions for disease reacti on to barley pathogens prevalent in Canada indicated that this germpla sm is a good source of resistance to Septoria passerinii, Rhynchospori um secalis and the spot-form of Pyrenophora teres, but not to Cochliob olus sativus (spot blotch phase), Puccinia graminis tritici, Ustilago nuda or barley stripe mosaic virus. A small number of accessions with resistance to the net-form of P. teres were identified.