Four genes at the sarae locus affecting reaction to phytophthora root rot have been previously identified : rps1, Rps1, Rps1b, Rps1c. As part of our breeding effort to create adapted varieties with resistance from diverse sources we selected the variety ' Kingwa ' which had been reported by Athow et al. (1974) to be r esistant to several races of the phytophthora- rot organism . We used it as a donor parent in backcrossing programs with the varieties 'Clark' (Group IV), ' Corsoy '(Group II ), 'Wells' (Group II), and 'Williams' (Group III) .
Bernard, R. L. and Cremeens, C. R.
"Research Notes: An allele at the rps1 locus from the variety 'Kingwa',"
Soybean Genetics Newsletter: Vol. 8
, Article 14.
Available at: http://lib.dr.iastate.edu/soybeangenetics/vol8/iss1/14