Masters Theses
Date of Award
6-1980
Degree Type
Thesis
Degree Name
Master of Science
Major
Agricultural Biology
Major Professor
James W. Hilty
Committee Members
Ernest Bernard, Leander Johnson
Abstract
The role of Phomopsis sojae in the soybean field and in seed decay has been well investigated. The production of toxins by this fungus, not previously reported, was examined in this study. Dilutions of P. sojae culture filtrates, derived from 14 - 29 day old cultures, significantly affected soybean seed germination; 1/10 and 1/100 dilutions inhibited soybean seedling root elongation. A dilutable phytotoxin was produced by P. sojae in culture.
The fungus grew well on six of seven media tested at temperatures ranging from 10 - 30°C. Pycnidial formation in culture occurred infrequently and depended on incubation periods of 35 days or longer.
Recommended Citation
Goodfellow, Paul J., "Growth, reproduction, and toxin production of Phomopsis sojae Lehman in culture. " Master's Thesis, University of Tennessee, 1980.
https://trace.tennessee.edu/utk_gradthes/7758