Dept. of Horticulture, Institute of Phytopolyology.
Dept. of Biological Sciences.
Received for publication 28 May 1985. Technical Contribution No. 2359. South Carolina Agricultural Experiment Station, Clemson, SC 29631. Appreciation is expressed to Larry Dyck, Dept. of Biological Sciences, George E. Carter, Jr., Dept. of Plant Pathology and Physiology, and Ed Vaughn, School of Textiles, for their assistance and the use of laboratory equipment. Appreciation is also expressed to Clyde Moore and JoAn Hudson, Electron Microscopists, for their assistance and support. The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.