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ToolsMurithi, Harun Muthuri, Namara, Mercy, Tamba, Mussa, Tukamuhabwa, Phinehas, Mahuku, George, van Esse, H. Peter, Thomma, Bart P. H. J. and Joosten, Matthieu H. A. J. (2021) Evaluation of soybean genotypes for resistance against the rust-causing fungus Phakopsora pachyrhizi in East Africa. Plant Pathology, 70 (4). pp. 841-852. ISSN 0032-0862
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Abstract
Soybean rust, caused by the biotrophic fungus Phakopsora pachyrhizi, is the most important foliar disease of soybean (Glycine max) worldwide. Deployment of resistant soybean cultivars is the best option for managing this disease. Genes conferring resistance to P. pachyrhizi have been identified, but pathotypes of the rust fungus overcoming these resistance genes have also been found. To identify novel resistance genes, soybean genotypes from both local and international sources were screened at multiple locations in Tanzania and Uganda in 2016 and 2017. The results from this screening revealed that infection types, disease severities, and sporulation levels varied among the genotypes and locations. The majority of the genotypes had tan-coloured (TAN) lesions and developed moderate sporulation, implying susceptibility, while only seven of the 71 lines had reddish-brown (RB) lesions and showed low disease severities in all of the screening environments. We identified seven genotypes that were the most resistant to rust in the most locations over the two years. These genotypes will be useful for further studies and, ultimately, for rust management, as they show broad resistance to various pathotypes of the rust fungus.
| Item Type: | Article |
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| Additional Information: | Data Availability Statement: The data that support the findings of this study are available from the corresponding author upon reasonable request. Acknowledgements: We acknowledge AVRDC, also known as World Vegetable Center (WorldVeg), that provided some of the soybean materials. This research was funded by the International Institute of Tropical Agriculture (IITA), by a Lukas Brader Scholarship Award and by the 2Blades Foundation at The Sainsbury Laboratory, Norwich, UK. |
| Uncontrolled Keywords: | infection types,phakopsora pachyrhizi,resistance,soybean genotypes,susceptibility,agronomy and crop science,genetics,plant science,horticulture ,/dk/atira/pure/subjectarea/asjc/1100/1102 |
| Faculty \ School: | Faculty of Science > School of Biological Sciences Faculty of Science > The Sainsbury Laboratory |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 31 Oct 2024 11:30 |
| Last Modified: | 02 Nov 2024 00:53 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/97362 |
| DOI: | 10.1111/ppa.13339 |
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