Figure 3.

RAC is present within a subclass of rhg1‐a signature soybean accessions. (a) Frequency of RAC‐associated SNP, ss715606985, among 19,645 SoySNP50K‐genotyped USDA soybean accessions. (b) Agarose gel showing PCR detection of α‐SNAP‐RAC junctions or WT α‐SNAP exon 1–2 distances among rhg1‐a signature accessions positive or negative for the RAC‐SNP, ss71560698. Williams 82 (Rhg1_WT), “Forrest” (rhg1‐a), and “Fayette” (rhg1‐b) included as controls; Rhg1 haplotypes color coded with dots as in Figure 1. An * denotes an rhg1‐a signature accession lacking the RAC‐SNP. (c) Frequency of RAC‐associated SNP among all USDA Glycine max accessions with consensus SNP signatures of rhg1‐a or rhg1‐b haplotypes