Resistance in Tomato Transplants to Bacterial Speck. R. D. Gitaitis, Department of Plant Pathology, U.S. Department of Agriculture, Coastal Plain Experiment Station, Tifton, GA 31793. S. C. Phatak, Department of Horticulture, University of Georgia, C. A. Jaworski, and M. W. Smith, Agricultural Research Service, U.S. Department of Agriculture, Coastal Plain Experiment Station, Tifton, GA 31793. Plant Dis. 66:210-211. Accepted for publication 8 June 1981. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1982. DOI: 10.1094/PD-66-210.

Reactions of 20 cultivars of tomato transplants during a natural epidemic of bacterial speck were observed in southern Georgia. Although cultivars were susceptible, significantly higher levels (P = 0.05) of resistance occurred in Campbell 28, Hunt 62, and Ohio 7663 tomato than in the other cultivars. Greater disease severity occurred in the lower one-third of foliage in 8-wk-old plants. However, the rating of a cultivar in relation to resistance in other cultivars was relatively unaffected whether the upper, middle, or lower third of the foliage was evaluated.

Keyword(s): Lycopersicon esculentum, Pseudomonas syringae pv. tomato.