Identification of sources of resistance in cowpea lines to Macrophomina root rot disease in Northern Ghana

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dc.contributor.authorLamini, S.
dc.contributor.authorKusi, F.
dc.contributor.authorCornelius, E.W.
dc.contributor.authorDanquah, A.
dc.contributor.authorAttamah, P.
dc.contributor.authorMukhtaru, Z.
dc.contributor.authorAwuku, F.J.
dc.contributor.authorOwusu, E.Y.
dc.contributor.authorAcheampong, M.
dc.contributor.authorMensah, G.
dc.date.accessioned2023-02-09T20:47:12Z
dc.date.available2023-02-09T20:47:12Z
dc.date.issued2023
dc.descriptionResearch Articleen_US
dc.description.abstractMacrophomina root rot disease (MRRD) caused by Macrophomina phaseolina is an emerging threat to the profitable cowpea production in northern Ghana. Recommended control methods including the use of fungicides are ineffective and expensive for resource poor farmers whilst biocontrol options are not commercially available. An integrated method based on host plant resistance is considered the cheapest and most effective method of managing the disease. This study sought to confirm and characterize previously identified MRRD isolates from Northern Ghana using molecular technology, and to identify cowpea with potential sources of resistance to the MRRD. A PCR assay of ten isolates of the cowpea root rot pathogen revealed all isolates belonged to the species M. phaseolina, whilst a nucleotide BLAST of eight isolates showed 98% similarity with the sequences of Macrophomina isolates from other host available in GenBank. A sick pot method evaluation of 49 cowpea lines found 10 lines resistant to MRRD on a 1–9 disease severity scale (disease score, less than 5). A selection of eight resistant lines (Suvita 2, Abagbaala, IT97K573-1-1, IT93K 503-1-1, Hewale, AV2 3224, Nhyira and T2T4), and a susceptible check (Songotra) were evaluated against 10 isolates of M. phaseolina using a sick pot method. All the genotypes except for the susceptible check were resistant to MRRD. Thus, these genotypes could be used in cowpea MRRD resistance breeding programs.en_US
dc.identifier.otherhttps://doi.org/10.1016/j.heliyon.2022.e12217
dc.identifier.urihttp://ugspace.ug.edu.gh:8080/handle/123456789/38627
dc.language.isoenen_US
dc.publisherHeliyonen_US
dc.subjectMacrophmina phaseolinaen_US
dc.subjectCowpea linesen_US
dc.subjectRoot rot diseaseen_US
dc.subjectDisease resistanceen_US
dc.subjectNorthern Ghanaen_US
dc.titleIdentification of sources of resistance in cowpea lines to Macrophomina root rot disease in Northern Ghanaen_US
dc.typeArticleen_US

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