Resistance Induced in Wheat by an Avirulent Race of Puccinia recondita f. sp. tritici. M. A. J. Van Asch, Department of Microbiology and Plant Pathology, University of Natal, P.O. Box 375, Pietermaritzburg, 3200, Republic of South Africa. F. H. J. Rijkenberg, and T. A. Coutinho. Department of Microbiology and Plant Pathology, University of Natal, P.O. Box 375, Pietermaritzburg, 3200, Republic of South Africa. Plant Dis. 76:412-415. Accepted for publication 17 July 1991. Copyright 1992 The American Phytopathological Society. DOI: 10.1094/PD-76-0412.

Seventeen-day-old seedlings of the spring wheat cultivar SST25 were inoculated with an avirulent race of Puccinia recondita f. sp. tritici. After various time intervals, the plants were reinoculated with a virulent race. No change in latent period or infection type was observed. However, the infection frequency was reduced by approximately 60%.