We have noted that varieties differ in rate of Bean Pod Mottle virus infection. For example, Spansoy 201 had less incidence of BPMV throughout the 2002 growing season when compared to Spansoy 250 (see graph below). Less incidence can translate into slower disease progression, thus a higher yield at seasons end.

An aspect of our virus screening is to identify those varieties with lower incidence that decrease virus spread since true resistance has been elusive.

Figure 1. Rate of virus infection in two soybean varieties.