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ARS Home » Midwest Area » Urbana, Illinois » Soybean/maize Germplasm, Pathology, and Genetics Research » Research » Publications at this Location » Publication #370293
Research Project: Integrated Management of Soybean Pathogens and Pests

Location: Soybean/maize Germplasm, Pathology, and Genetics Research

Title: Evaluation of wild perennial Glycine species for resistance to soybean rust nematode and soybean rust

Author
item HERMAN, THERESA - Oak Ridge Institute For Science And Education (ORISE)
item HAN, JAEYENONG - University Of Illinois
item SINGH, RAM - University Of Illinois
item Domier, Leslie
item Hartman, Glen

Submitted to: Plant Breeding
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/5/2020
Publication Date: 5/8/2020
Citation: Herman, T.K., Han, J., Singh, R.J., Domier, L.L., Hartman, G.L. 2020. Evaluation of wild perennial Glycine species for resistance to soybean rust nematode and soybean rust. Plant Breeding. 139(5):923–931. https://doi.org/10.1111/pbr.12834.
DOI: https://doi.org/10.1111/pbr.12834

Interpretive Summary: The genetic base for commercial soybean (Glycine max) cultivars is extremely narrow. There are 26 wild perennial Glycine species that potentially have genes of economic importance that could be incorporated into soybean. Our study evaluated 16 accessions from four perennial Glycine species for resistance to soybean cyst nematode and to multiple isolates of soybean rust, two of the most important pathogens of soybean. All 16 accessions were resistant to soybean cyst nematode. All 16 accessions were highly resistant to one rust isolate, but not other rust isolates indicating that a differential reaction occurred between the soybean rust isolate and the Glycine species accession tested. The results showed that Glycine accessions with resistance to soybean cyst nematode and to multiple isolates of P. pachyrhizi may be useful in wide-hybridization programs to transfer resistance into soybean. This information is important to scientists in the private and public sectors that are interested in disease improvement of crops using wide hybridization procedures.

Technical Abstract: The genetic base for soybean [Glycine max (L.) Merr.] cultivars is extremely narrow. There are 26 wild perennial Glycine species that potentially have genes of economic importance for incorporation into soybean. Our study evaluated 16 accessions from four perennial Glycine species for resistance to soybean cyst nematode (SCN; Heterodera glycines; HG) and to multiple isolates of soybean rust (Phakopsora pachyrhizi) prior to initiating hybridization with soybean. All 16 accessions were resistant H. glycines HG Type 2.5.7 with 12 accessions associated with low SCN reproduction and plant introductions (PIs) 483227, 509501, 563892, and 573064 (all G. tomentella) with no cyst reproduction. All 16 accessions produced an immune reaction to one rust isolate (MAL19). None of the 16 accessions had an immune reaction to other rust isolates, although G. argyria, PI 505151, and G. tomentella, PIs 483227, 509501, and 573064, showed no reproduction of P. pachyrhizi regardless of isolate. In summary, Glycine accessions with resistance to SCN and to multiple isolates of P. pachyrhizi may be useful in wide-hybridization programs to transfer resistance into soybean.