Evaluation location: Iowa, United States
Data presented are the mean results (percent resistant plants showing no symptom of wilting and/or a basal stem rot lesion) from a two year (2008, 2009), three location (Crookston, MN, 2008, 2009; Davenport, ND, 2008; Grandin, ND, 2009) field trial for 259 PIs. The trials were conducted using sets-within-replications experimental design with two replications in each location (13 sets in each replication). Commercial hybrids `Croplan 305?, resistant, and `Cargill 270?, susceptible, were used as checks in all sets. Seeds were planted in 6 m long single-row plots with 75 cm row spacing, yielding approximately 25 plants per row. S. sclerotiorum inoculum consisting of mycelium on millet was applied in each trial when the plants were approximately V-6 growth stage, or no more than 45 cm tall (5 to 6 weeks after planting). 2008 susceptible check mean across sets and locations: 44.00; 2009 susceptible check mean across sets and locations: 78.24. 2008 resistant check: mean across sets and locations 75.22; 2009 resistant check mean across sets and locations: 79.65.