Response of Selected Maize Inbreds to Erwinia stewartii and E. zeae. C. A. C. Gardner, Research Graduate Assistant, Department of Plant Pathology, University of Missouri, Columbia, 65211. J. R. Wallin, Research Plant Pathologist, USDA, SEA/AR, and Department of Plant Pathology, University of Missouri, Columbia, 65211. Plant Dis. 64:168-169. Accepted for publication 19 September 1979. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-168.

Sixty maize lines, 58 of which were inbreds, were tested in the seedling state and just before tasseling for response to artificial inoculation with two cultures of Erwinia stewartii and one of E. zeae. Eleven inbreds were resistant to all three cultures at both dates, four inbreds and the known susceptible control were susceptible to all three cultures at both dates, and four inbreds responded differentially to cultures or dates of inoculation. The responses of the remaining lines varied too much to be classified. Results indicate that specificity is an important feature of the E. stewartii association with Zea mays. Reaction to E. zeae could not be separated from reaction to E. stewartii.