1. a USDA‐ARS, Legume Breeding and Production , Washington State University , 215 Johnson Hall, Pullman , Washington , 99164 , USA
2. b Dept Agriculture and Horticulture , University of Reading , P.E.L., Shinfield Grange, Cutbush Lane, Shinfield, Reading , Berks. , RG2 9AD , U.K.