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Electrophoretic Differences in Seed Proteins among Varieties of Soybean, Glycine max (L.) Merrill¹

Seed proteins of 61 soybean varieties were analyzed by disc electrophoresis. The stained proteins in the polyacrylamide gels revealed two components that separated the varieties into two major groups. Component "A" was present in 13 varieties, and component "B" was present in 48 varieties. In no instance were A and B observed in a single variety. Repeated tests with seed from various environments produced no exceptions to the varietal grouping with respect to these two proteins.

Key Words: genetics • protein extraction • disc-electrophoresis • polyacrylamide • hilum color

² Research Botanist, FCAP, Seed Research Laboratory, Beltsville, Maryland.

Received for publication December 21, 1966.