A diallel model with repeatability information applied in an elephant grass breeding program.

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dc.contributorRICARDO AUGUSTO DINIZ CABRAL FERREIRA, UNIVERSIDADE FEDERAL DE VIÇOSA; TATIANA VILELA DE SOUZA PESSOA, UNIVERSIDADE FEDERAL DE VIÇOSA; FABYANO FONSECA E SILVA, UNIVERSIDADE FEDERAL DE VIÇOSA; KAIO OLIMPIO DAS GRAÇAS DIAS, UNIVERSIDADE FEDERAL DE VIÇOSA; PEDRO CRESCÊNCIO SOUZA CARNEIRO, UNIVERSIDADE FEDERAL DE VIÇOSA; COSME DAMIÃO CRUZ, UNIVERSIDADE FEDERAL DE VIÇOSA; JUAREZ CAMPOLINA MACHADO, CNPGL.
dc.creatorFERREIRA, R. A. D. C.
dc.creatorPESSOA, T. V. de S.
dc.creatorSILVA, F. F. e
dc.creatorDIAS, K. O. das G.
dc.creatorCARNEIRO, P. C. S.
dc.creatorCRUZ, C. D.
dc.creatorMACHADO, J. C.
dc.date2024-08-05T14:53:53Z
dc.date2024-08-05T14:53:53Z
dc.date2024-08-05
dc.date2024
dc.date.accessioned2026-07-07T03:56:56Z
dc.descriptionElephant grass is an allogamous perennial forage crop with asexual propagation, allowing plant breeders to explore heterosis and develop hybrids. However, selecting parents for diallel crossing schemes is a major hurdle in the development of hybrids. In addition, this perennial crop has several harvests, which increases the dataset size and the complexity of the statistical analyses. Here, we propose a diallel analysis based on linear mixed models with repeatability information to identify parents and hybrids, and the optimum number of harvests. We performed a complete diallel crossing of 11 parents with data from five harvests for morphological traits and two harvests for nutritive value traits. The diallel model with repeatability information aids in the estimation of the genetic effect of diallel analysis to infer the ideal number of harvests and genotype × harvest interaction. We observed that the specific combining ability (SCA) is more critical for morphoagronomic traits, while the general combining ability (GCA) has greater importance for traits related to nutritive value. Furthermore, we detected that five harvests were sufficient for the morphoagronomic traits with a coefficient of determination (R2 ) of 0.8; however, ten harvests were required for an R2 of 0.9. The model is a promising singleanalysis alternative for plant breeders to analyze a diallel with repeated measures and to estimate important parameters without incurring in additional financial costs.
dc.identifierScientia Agricola, v. 81, e20230045, 2024.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1166222
dc.identifierhttps://doi.org/10.1590/1678-992X-2023-0045
dc.identifier.urihttp://hdl.handle.net/123456789/448167
dc.languageeng
dc.rightsopenAccess
dc.subjectGenetic selection
dc.subjectRepeated measures
dc.subjectForragem
dc.subjectForage
dc.subjectSpecific combining ability
dc.subjectHeterosis
dc.titleA diallel model with repeatability information applied in an elephant grass breeding program.
dc.typeArtigo de periódico

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