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The genomic relationships among six wild perennial species of the genus Glycine subgenus Glycine Willd.

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Summary

Based on meiotic chromosome behavior in intra- and interspecific hybrids, genome symbols were assigned to the following diploid (2n=40) Glycine species: G. canescens = AA; G. clandestina- Intermediate pod (Ip)=A 1 A 1; G. clandestina-Short pod (Sp)=BB; G. latifolia = B 1 B 1; G. tabacina = B 2 B 2; G. cyrtoloba = CC; and G. tomentella = DD. Genome symbol GG was reserved for the soybean, G. max. At metaphaseI, loose chromosome associations were observed in completely sterile interspecific hybrids whose parents differed in their genomes, suggesting some chromosome homologies among species. Although G. clandestina-Sp, G. latifolia and G. tabacina are morphologically distinct species, they differ only by a paracentric inversion. Similar observations were recorded for G. canescens and G. clandestina-Ip. Evidence is presented that demonstrates that G. tabacina (2n=80) and G. tomentella (2n=78, 80) are allotetraploid species complexes. Hybrid weakness, sterility, seedling lethality and seed inviability were found in intra- and interspecific hybrids.

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Authors and Affiliations

  1. Department of Agronomy, University of Illinois, 61801, Urbana, IL, USA

    R. J. Singh & T. Hymowitz

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  1. R. J. Singh
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  2. T. Hymowitz
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Communicated by G.S.Khush

This research was supported in part by the Illinois Agricultural Experiment Station and the U.S. Department of Agriculture (Special grant 82-CRSR-2-2007). Travel grants to collect Glycine germplasm were received from the Rockefeller Foundation, the Illinois Soybean Program Operating Board, the National Science Foundation (INT76-14753) and the International Board for Plant Genetic Resources

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Singh, R.J., Hymowitz, T. The genomic relationships among six wild perennial species of the genus Glycine subgenus Glycine Willd.. Theoret. Appl. Genetics 71, 221–230 (1985). https://doi.org/10.1007/BF00252059

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  • DOI: https://doi.org/10.1007/BF00252059

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