VIEW ARTICLE

Effects of Time of Inoculation with Tobacco Ringspot Virus on the Chemical Composition and Agronomic Characteristics of Soybean. J. W. Demski, Assistant Professor of Plant Pathology, University of Georgia, College of Agriculture Experiment Stations, Georgia Station, Experiment 30212; H. B. Harris(2), and M. D. Jellum(3). (2)(3)Associate Professors of Agronomy, University of Georgia, College of Agriculture Experiment Stations, Georgia Station, Experiment 30212. Phytopathology 61:308-311. Accepted for publication 1 October 1970. DOI: 10.1094/Phyto-61-308.

Significant effects on the chemical composition and agronomic characteristics of Lee soybean were observed from infection with tobacco ringspot virus up to the end of the flowering period, which was 72 days after planting. Palmitic, linoleic, and linolenic acid proportions of the oil decreased and stearic and oleic acids increased as a result of infection during this period. The total seed oil decreased and total seed protein increased with early inoculation. Virus infection at or before flowering significantly reduced yield and plant height and delayed seed maturity. Early inoculation also affected seed quality and seed weight, but did not affect lodging.