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Resistance

Wheat Peduncle Structure in Relation to Slow Rusting by Puccinia graminis f. sp. tritici. M. L. A. Palmer, Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108, Present address of senior author: North Central Forest Experiment Station, St. Paul, MN 55108; Roy D. Wilcoxson, Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108. Phytopathology 72:505-506. Accepted for publication 21 July 1981. Copyright 1982 The American Phytopathological Society. DOI: 10.1094/Phyto-72-505.

Two hundred forty-eight wheat (Triticum aestivum) lines were rated for seven characters of the peduncle and slow rusting caused by Puccinia graminis f. sp. tritici as indicated by area under the disease progress curve (AUDPC). The characters studied were thought capable of restricting stem rust development. The lines varied from one another for the several characters and for slow rusting. The correlation coefficients for the relationship between each character and AUDPC were statistically nonsignificant.