Inheritance of Certain Proteins in Soybean Seed1
- A. L. Larsen and
- B. E. Caldwell2
Seed proteins from most of the currently grown soybean [Glycine max, (L.) Merrill] varieties were examined by disc-electrophoresis. Two components, designated as A and B were found to be variety specific. Each variety contained one or the other, but not both. This study was conducted to determine the inheritance of these proteins. When a variety with the A seed protein was crossed with a variety with the B seed protein, the seed from the cross contained both proteins, but at lower concentrations for each than when occurring alone. Selfed F1 plants produced F2 seeds of A, AB and B types in a ratio of 1:2:1 respectively. Selfed F2 plants from A and B seeds produced F3 seeds containing their respective parental proteins. However, selfed F2 plants from seed containing the AB protein produced F3 seeds which segregated in a 1:2:1 ratio. The data indicate that the proteins are controlled by a pair of co-dominant genes at a single locus.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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