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United States Department of Agriculture

Agricultural Research Service

Title: Genes Affecting Seed Traits in Soybeans Map to Linkage Group F1

Authors
item Chen, Zhijian - IOWA STATE UNIVERSITY
item Shoemaker, Randy

Submitted to: Journal of Heredity
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: May 29, 1997
Publication Date: N/A

Interpretive Summary: Soybean is a major source of high protein animal feed. Soybean seed proteins are produced by signals from several regions of hereditary material called genes', all acting together during seed development. The evolution of these genes has played a role in determining how they produce their signals. In this paper the authors followed the segregation in two soybean populations, of some of these proteins, and mapped the location of several protein genes onto specific locations on soybean chromosomes. Two protein genes and one gene that affects seed development in other ways all mapped to the same chromosome. Their presence on the same chromosome may tell scientists something about their evolution and may help us to understand the control and regulation of the production of this source of high protein animal feed.

Technical Abstract: For linkage analysis, genotype T311 and cultivars Raiden and Keburi were used to develop two F2 populations. T311 is a shriveled seed mutant and a progeny of the cross between breeding lines AP2 and P2180. Raiden contains a null allele in the Gy4 gene, and thus lacks the glycinin subunits A5A4B3. The Gy4 gene was genetically mapped to linkage group O. Keburi contains a null allele in the Cgy1 gene, and thus lacks the alfa'-subunit of B- conglycinin. Genetic analysis showed that the shriveled seed trait is inherited as a single recessive gene with maternal effect. Linkage analysis mapped the shriveled seed gene (Shr) and the Cgy1 gene to linkage group F. Other seed trait genes, Gy5 (glycinin subunit) and B1 (seed coat bloom), were previously mapped to this linkage group. The significance of the cluster of these seed genes was discussed.

Last Modified: 8/30/2014