Shift in Virulence of Soybean Cyst Nematode is Associated with Use of Resistance from PI 88788

Fig. 4. Comparison of the results of surveys of soybean cyst nematode populations in Illinois. The 1991 data were reported by Sikora and Noel (10) as "races," and were expressed here as Illinois SCN Types (6) in order to make the comparison clearer.



Image from Plant Health Progress article:
Shift in Virulence of Soybean Cyst Nematode is Associated with Use of Resistance from PI 88788