The wp allele generates a pink flowered phenotype in soybean [Glycine max (
L.) Merr.]. Genotypes with W1_wp wp are associated with larger seed size an
d higher seed protein content. The influence of a single locus on the antho
cyanin pathway and seed protein accumulation has not been documented in oth
er species. It is of interest to clone wp by initially identifying linked m
olecular markers. The objective of this research was to use restriction fra
gment length polymorphism (RFLP) and simple sequence repeat (SSR) molecular
markers to position the wp locus on the soybean public genetic map. Of the
74 markers tested, two RFLP and 14 SSR markers were identified as linked t
o wp. The two RFLP markers linked to wp in this study were previously repor
ted to be associated with quantitative trait loci (QTL) controlling seed pr
otein in a G. soja Siebold & Zucc. X G. max population. It is proposed that
wp is located between RFLP locus K011 and SSR locus Satt600. The molecular
markers linked to wp were located on linkage group D1b+W of the public soy
bean genetic map. The knowledge of linked molecular markers will assist in
cloning wp, potentially leading to further characterization of how wp influ
ences the anthocyanin pathway and seed protein accumulation.