Plants of the Glycine max Plant Introduction 68,704 characteristically produce flowers that have six or more petals, rather than the nonnal complement of five petals (l standard, 2 wing, and 2 keel petals). We have investigated the inheritance and expression of this trait. Eight F1 plants were classified by sampling ten flowers per plant; none of the F1 plants produced more than five petals, indicating that the phenotype is under recessive genetic control.
Stelly, David M. and Palmer, Reid G.
"Research notes: Inheritance and expression of a mutant phenotype affecting
the number of petals per flower,"
Soybean Genetics Newsletter: Vol. 6
, Article 27.
Available at: https://lib.dr.iastate.edu/soybeangenetics/vol6/iss1/27