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Figure 1. Analysis of resistance to Cercospora sojina in 64 ancestors and descendants of the soybean cultivar Davis. Dark boxes represent accessions that putatively contain the Rcs3 allele transmitted from Davis, as indicated by their resistance to the 15 highly virulent isolates of C. sojina and the presence of marker bands of 156/182 bp at Satt244 and 242 bp at Satt547. Clear boxes represent lines that do not possess the Rcs3 allele and that were susceptible to some of the 15 isolates of C. sojina. Hatched boxes represent the accessions that were not available for analysis. The solid vertical line shows the immediate crosses involving Davis. Ancestors of Davis are on the left of the solid line, and descendants of Davis are on the right of the solid vertical line.
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