Lack of antibiosis against Mahanarva spectabilis (Distant) (Hemiptera: Cercopidae) in Cenchrus purpureus (Schumach.) Morrone germplasm.

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dc.contributorALEXANDER MACHADO AUAD, CNPGL; LUÍS AUGUSTO CALSAVARA; FAUSTO DE SOUZA SOBRINHO, CNPGL; FRANCISCO JOSE DA SILVA LEDO, CNPGL; JUAREZ CAMPOLINA MACHADO, CNPGL; ANTONIO VANDER PEREIRA, CNPGL.
dc.creatorAUAD, A. M.
dc.creatorCALSAVARA, L. A.
dc.creatorSOUZA SOBRINHO, F. de
dc.creatorLEDO, F. J. da S.
dc.creatorMACHADO, J. C.
dc.creatorPEREIRA, A. V.
dc.date2024-12-05T13:00:25Z
dc.date2024-12-05T13:00:25Z
dc.date2024-12-03
dc.date2024
dc.date.accessioned2026-07-07T03:57:55Z
dc.descriptionThis study examines Cenchrus purpureus with the aim of identifying genotypes and select plants progenitors resistant to Mahanarva spectabilis (Distant, 1909) for future recurrent selection from the elephant grass germplasm bank. Six M. spectabilis eggs were inserted into each plant of 138 elephant grass genotypes. After 35-45 days the percentage of nymphal survival was assessed. Despite the large variation in insect survival there were no significant differences in the joint analyses of bioassays conducted from 2008 to 2024. None genotype yielded an insect survival rate of less than 30%, and fewer than 10% of the genotypes showed a survival rate of less than 50%. These genotypes should be intercrossed, forming a new population each year, with the aim of increasing the presence of favorable alleles for resistance to this insect pest, with the goal of producing genotypes that achieve future M. spectabilis nymph mortality greater than 70%.
dc.identifierCrop Breeding and Applied Biotechnology, v. 24, n. 4, e505824413, 2024.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1169975
dc.identifierhttp://dx.doi.org/10.1590/1984-70332024v24n4n50
dc.identifier.urihttp://hdl.handle.net/123456789/448815
dc.languageeng
dc.rightsopenAccess
dc.subjectEphant grass
dc.subjectSpittlebugs
dc.subjectPastagem
dc.subjectCapim Elefante
dc.subjectPastures
dc.titleLack of antibiosis against Mahanarva spectabilis (Distant) (Hemiptera: Cercopidae) in Cenchrus purpureus (Schumach.) Morrone germplasm.
dc.typeArtigo de periódico

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