Electrophoretic variation of seed proteins among U.S. populations of Tripsacum dactyloides Var. dactyloides

Accessions from across the range of Tripsacum dectyloides in the US. were assayed electrophoretically for interpopulation variation in seed proteins. Clustering of isoelectric focusing patterns for Tris-HCl and water-soluble proteins revealed high levels of homogeneity. Preliminary resultswith alcohol-soluble proteins, in contrast, showed this fraction to be intrinsically much more variable. Divergent functional roles of the protein fractions themselves could account for this observed difference in variation and are discussed in the paper.