Models for the inheritance of several variant soybean electrophoretic zymograms

Abstract

It was found from an independence test that loci AM-3, TO-3, and ADH-4 segregated independently and could be used as independent markers in any genetic study with soybeans. While additional data may modify the models presented, we believe that these models best explain the observations to date. Both genetic and biochemical observations were incorporated into the 4- (possibly 5) gene model presented for ADH. The model suggests a dimeric ADH structure, with at least two stable hetero dimers being formed. The model also suggests that two of the ADH loci (ADH-I and ADH-4) are closely linked. The AM model suggests three noninteracting amylase loci. The TO model describes two probable homohetero dimer relationships, controlled by four genes, and nu merous other bands with unknown genetic control. All of the variants, with the possible exception of the AM nulls, can be described as mobility or null variants and follow the standard inheritance pattern for such variants.