Sorghum genotypes with potential resistance to the aphid Melanaphis sorghi (Hemiptera: Aphididae).

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dc.contributorALEXON FERNANDES CAMPOS, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI; CICERO BESERRA DE MENEZES, CNPMS; SIMONE MARTINS MENDES, CNPMS; PRISCILLA TAVARES NASCIMENTO MAIA, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI; ISADORA CRISTINA MARTINS OLIVEIRA, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI; MARCOS PAULO MINGOTE JÚLIO, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI; MARCOS ANTONIO MATIELLO FADINI, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI.
dc.creatorCAMPOS, A. F.
dc.creatorMENEZES, C. B. de
dc.creatorMENDES, S. M.
dc.creatorMAIA, P. T. N.
dc.creatorOLIVEIRA, I. C. M.
dc.creatorJÚLIO, M. P. M.
dc.creatorFADINI, M. A. M.
dc.date2025-11-27T17:48:47Z
dc.date2025-11-27T17:48:47Z
dc.date2025-11-19
dc.date2025
dc.date.accessioned2026-07-07T05:28:22Z
dc.descriptionThe sorghum aphid Melanaphis sorghi (Hemiptera: Aphididae) has become the primary threat to crop production in various parts of the world. Although the combined use of organosynthetic insecticides and resistant hybrids is a common strategy in countries like the USA, Brazilian farmers face the challenge of a lack of registered active ingredients and resistant cultivars against M. sorghi. This study aimed to evaluate grain sorghum genotypes for resistance to M. sorghi infestation. In the initial screening phase, 28 genotypes were evaluated, from which eight were selected and grouped as: i) resistant to M. sorghi (BRS373, CMSXS3017, BRS310, and SC110 [control]); and ii) susceptible (CMSXS3012, 1822043, 2116017, and AG 1085), for further assessment and determination of productivity in subsequent stages. The trial was conducted in a greenhouse under controlled humidity and temperature, with three controlled artificial infestations and injury assessments every seven days. Aphid infestation primarily reduced the plant fresh weight of the plant and grain size, negatively affecting grain weight per panicle. Without M. sorghi infestation, the hybrid genotypes AG 1085, 1822043, and CMSXS3012 showed the highest grain weight; however, they were susceptible to aphids when infested. Under infestation, the most resistant genotypes with the highest grain weight values were CMSXS3017, SC110, BRS373, and BRS310. The SC110 lineage was minimally affected by aphid infestation and should be used as a source of resistance in breeding programs for aphid tolerance. The results of this study may be used to evaluate productivity losses due to sorghum aphid infestation and to propose potential resistant genetic materials. Combined with other integrated management tactics, these findings can make sorghum aphid control more precise and sustainable.
dc.identifierRevista Brasileira de Entomologia, v. 69, n. 4, e20250005, 2025.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1181682
dc.identifierhttps://doi.org/10.1590/1806-9665-RBENT-2025-0005
dc.identifier.urihttp://hdl.handle.net/123456789/492343
dc.languageeng
dc.rightsopenAccess
dc.subjectManejo integrado de praga
dc.subjectSorgo
dc.subjectPulgão
dc.subjectPraga de Planta
dc.titleSorghum genotypes with potential resistance to the aphid Melanaphis sorghi (Hemiptera: Aphididae).
dc.typeArtigo de periódico

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