Freialdenhoven, A. Nar-1 and Nar-2, Two Loci Required for Mla12-Specified Race-Specific Resistance to Powdery Mildew in Barley. [electronic resource] - The Plant cell Jul 1994 - 983-994 p. digital Publication Type: Journal Article ISSN: 1532-298X Standard No.: 10.1105/tpc.6.7.983 doi