Resistance of 17 Soybean Cultivars to Foliar, Latent, and Seed Infection by<i>Cercospora kikuchii</i>

Abstract

Seventeen soybean (Glycine max) cultivars, representing maturity groups I to IV, were screened under greenhouse and field conditions for resistance to foliar and seed infection by Cercospara kikuchii. Although significant differences among cultivars in purple seed stain incidence, caused by C. kikuchii, were documented in greenhouse and field trials, predicting the ranking in cultivar resistance to purple seed stain under field conditions based on greenhouse results was largely unsuccessful. Four cultivars (BSR 101, Amsoy 71, Hack, and Miami) were consistently susceptible, and one cultivar (Resnick) was resistant to foliar infection in both greenhouse and field trials. However, significant differences in foliar disease severity were detected only in one of two field seasons [...]