Evaluation location: Illinois, United States
Accessions in maturity groups 000 to IV were evaluated between 1981 and 1984 for resistance to Brown Stem Rot (BSR) caused by Phialophora gregata. Lines were evaluated in naturally infested fields at latitudes to which they were adapted. In 1985 and 1986, putatively resistant lines were evaluated in replicated tests. The early maturity material was tested at Rosemount, MN, Hancock, WI, and Ames, IA. The late maturity material was tested at Ames, IA, and Urbana, IL. Each line was also evaluated in the greenhouse at Urbana, IL. Ratings at Hancock, WI, and in the greenhouse were based on leaf symptoms. All other ratings were based on stem symptoms.