Fig. 2. Female Indices (FI) of 622 soybean cultivars labeled "race 3 resistant" infested with 1,000 eggs of an HG Type 0 (formerly, "race 3" or "race 6") SCN population after 30 days in a greenhouse in 2007. Cultivar number 1 (the leftmost bar in the graph) is Plant Introduction (PI) 88788, the source of resistance of 96% of the other 621 cultivars. FI values are calculated from replicated results as follows: (mean number of females on test cultivar) ÷ (mean number of females on ‘Lee 74’) × 100. Those cultivars with FI < 10 are considered resistant.
Image from Plant Health Progress article:
A Standard Greenhouse Method for Assessing Soybean Cyst Nematode Resistance in Soybean: SCE08 (Standardized Cyst Evaluation 2008)
