Previous View
APSnet Home
Phytopathology Home


The Relationship Between Glycoalkaloids and Disease Resistance in Potatoes. J. A. Frank, Research Plant Pathologist, Agricultural Research Service (ARS), U. S. Department of Agriculture (USDA), Orono, Maine 04473; J. M. Wilson(2), and R. E. Webb(3). (2)Food Scientist, Maine Agricultural Experiment Station, Orono 04473; (3)Research Plant Pathologist, ARS, USDA, Beltsville, Maryland 20705. Phytopathology 65:1045-1049. Accepted for publication 7 April 1975. DOI: 10.1094/Phyto-65-1045.

Ten potato cultivars were grown in replicated field-disease test plots in 1972 and 1973 at Presque Isle, Maine. The four diseases tested included early and late blight, common scab, and Verticillium wilt. During the infection period in each disease test, the part of the plant that was invaded by the individual pathogen was analyzed for total glycoalkaloid (TGA) content. The data obtained in 1972 and 1973 indicated a lack of correlation between disease resistance in potato plants and TGA content.

Additional keywords: Alternaria solani, Phytophthora infestans, Streptomyces scabies, Verticillium albo-atrum.