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ARS Home » Midwest Area » East Lansing, Michigan » Sugarbeet and Bean Research » Research » Publications at this Location » Publication #376626
Research Project: Utilizing Genetic Diversity within Phaseolus vulgaris to Develop Dry Beans with Enhanced Functional Properties

Location: Sugarbeet and Bean Research

Title: Preliminary evaluation of wild bean (Phaseolus spp.) germplasm for resistance to Fusarium cuneirostrum and Fusarium oxysporum

Author
item HAUS, MIRANDA - Michigan State University
item PIERZ, LOGAN - Michigan State University
item JACOBS, JANETTE - Michigan State University
item WIERSMA, ANDREW - Michigan State University
item AWALE, HALIMA - Michigan State University
item CHILVERS, MARTIN - Michigan State University
item BUELL, ROBIN - Michigan State University
item Cichy, Karen

Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 2/11/2021
Publication Date: 2/23/2021
Citation: Haus, M.J., Pierz, L.D., Jacobs, J.L., Wiersma, A.T., Awale, H., Chilvers, M.I., Buell, R., Cichy, K.A. 2021. Preliminary evaluation of wild bean (Phaseolus spp.) germplasm for resistance to Fusarium cuneirostrum and Fusarium oxysporum. Crop Science. https://doi.org/10.1002/csc2.20495.
DOI: https://doi.org/10.1002/csc2.20495

Interpretive Summary: Root rots caused by Fusarium fungal pathogens are major constraints to common bean production globally. Genetic resistance to Fusarium root rots is a viable control strategy. Within cultivated beans some sources of resistance are available, but it is also useful to identify additional resistance. Wild bean germplasm are a potential source of resistance that may be worthwhile to incorporate into breeding programs. In this study, 248 wild bean accessions were evaluated for resistance to Fusarium root rot and Fusarium wilt. Resistance was observed in 21 and 16 accessions, respectively. In general, wild bean accessions collected from Andean regions had greater disease symptoms than accessions collected from Middle American regions. A few of the wild bean accessions identified with both Fusarium root rot and Fusarium wilt resistance are good candidates to use to incorporate disease resistance into bean cultivars.

Technical Abstract: Fusarium root rot and Fusarium wilt are major constraints on dry bean (Phaseolus vulgaris L.) production worldwide as limited genetic resistance is available in current cultivars. Wild accessions have greater genetic diversity than cultivated germplasm and could provide novel sources of resistance for these diseases. We screened 248 wild bean accessions for responses to both Fusarium root rot and Fusarium wilt and recorded disease severity; resistance was observed in 21 and 16 accessions, respectively. PI417775 was the most resistant accession to Fusarium root rot exhibiting very few symptoms whereas accessions PI661845 and PI535441 were the most resistant to Fusarium wilt. Only accessions MX-GT-1 and PI535445 were resistant to both Fusarium root rot and Fusarium wilt. Overall, accessions collected from Andean regions had greater disease symptoms than accessions collected from Middle America, though the highest and lowest disease scores for FRR were both found in the Middle American accessions. Introgression of Fusarium resistance from wild bean accessions into cultivated lines provides an avenue to improve disease resistance in elite cultivars.