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1Department of Plant Pathology, Bacteriology and Entomology, West Virginia University, Morgantown, West Virginia 26506
2Instrumentation Research Laboratory, Market Quality Research Division, Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland 20705
1Department of Plant Pathology, Bacteriology and Entomology, West Virginia University, Morgantown, West Virginia 26506
2Instrumentation Research Laboratory, Market Quality Research Division, Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland 20705
1Department of Plant Pathology, Bacteriology and Entomology, West Virginia University, Morgantown, West Virginia 26506
2Instrumentation Research Laboratory, Market Quality Research Division, Agricultural Research Service, United States Department of Agriculture, Beltsville, Maryland 20705
1
Published with the approval of the Director of the West Virginia University Agricultural Experiment Station as Scientific Paper No. 947. This research was supported in part by financial assistance to K. L. Poff from the National Science Foundation and the Institute of Biological Sciences, West Virginia University.