Evaluation location: Maryland, United States
Study Name: Resistance to Verticillium Wilt. Experiment Type: Field FIELD Study Year: 1984 Year started: 04/01/1984 Year ended: 12/12/1984. Two different methods were used to inoculate the test accessions. Method A: An inoculum of Verticillium dahliae and Verticillium ablo-atrum was placed in a ten centimeter trench along side the test seedlings and the trench was covered. Method B: Same as method A except the roots were mechanically wounded before inoculation. The accessions were evaluated after the first trace of wilt was detected and were given a wilt rating (0-10).