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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
01/12/2022 |
Data da última atualização: |
01/12/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CHAVES, S. F. S.; EVANGELISTA, J. S. P. C.; ALVES, R. S.; FERREIRA, F. M.; DIAS, L. A. S.; ALVES, R. M.; DIAS, K. O. G.; BHERING, L. L. |
Afiliação: |
SAULO F. S. CHAVES, UNIVERSIDADE FEDERAL DE VIÇOSA; JENIFFER S. P. C. EVANGELISTA, UNIVERSIDADE FEDERAL DE VIÇOSA; RODRIGO S. ALVES, UNIVERSIDADE FEDERAL DE LAVRAS; FILIPE M. FERREIRA, UNIVERSIDADE FEDERAL DE VIÇOSA; LUIZ A. S. DIAS, UNIVERSIDADE FEDERAL DE VIÇOSA; RAFAEL MOYSES ALVES, CPATU; KAIO O. G. DIAS, UNIVERSIDADE FEDERAL DE VIÇOSA; LEONARDO L. BHERING, UNIVERSIDADE FEDERAL DE VIÇOSA. |
Título: |
Application of linear mixed models for multiple harvest/site trial analyses in perennial plant breeding. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Tree Genetics & Genomes, v. 18, n. 6, Article number: 44, Dec. 2022. |
DOI: |
https://doi.org/10.1007/s11295-022-01576-5 |
Idioma: |
Inglês |
Conteúdo: |
The optimization of perennial plant breeding necessarily involves the evaluation of multi-harvest and/or multi-site trials. In these situations, modeling covariance structures can elevate accuracy. This study aimed to evaluate different covariance structures for multi-harvest and multi-site trial analyses, using two datasets (D1 and D2). In D1, 25 hybrids of Theobroma grandiflorum were evaluated in a complete randomized block design, during twelve consecutive harvest years. In D2, 215 clones of Eucalyptus spp. were evaluated in a complete randomized block design, in four sites. For both datasets, the covariance structures of the random effects were modeled, and their adequacy was tested by the Akaike and Bayesian information criteria. From the selected model, the variance components and genetic parameters were estimated. We also compared the expected genetic gains and the rankings of genotypes based on the genotypic values provided by the basic and the selected models. For D1, the third-order factor analytic model was the most suitable for genetic effects, while for D2, the unstructured model showed the best fit for such effects. The models provided a better insight into the variances dynamics over the harvest years/sites. The genetic gains were 3.52 percentage points higher in D1 and did not change in D2. Despite similar results, the standard model, modeled with covariance structures that assume homogeneity of co-variances, was not the most statistically appropriate model for D2 according to the information criteria. Therefore, the modeling of covariance structures can and should be used in the genetic evaluation of perennial plants MenosThe optimization of perennial plant breeding necessarily involves the evaluation of multi-harvest and/or multi-site trials. In these situations, modeling covariance structures can elevate accuracy. This study aimed to evaluate different covariance structures for multi-harvest and multi-site trial analyses, using two datasets (D1 and D2). In D1, 25 hybrids of Theobroma grandiflorum were evaluated in a complete randomized block design, during twelve consecutive harvest years. In D2, 215 clones of Eucalyptus spp. were evaluated in a complete randomized block design, in four sites. For both datasets, the covariance structures of the random effects were modeled, and their adequacy was tested by the Akaike and Bayesian information criteria. From the selected model, the variance components and genetic parameters were estimated. We also compared the expected genetic gains and the rankings of genotypes based on the genotypic values provided by the basic and the selected models. For D1, the third-order factor analytic model was the most suitable for genetic effects, while for D2, the unstructured model showed the best fit for such effects. The models provided a better insight into the variances dynamics over the harvest years/sites. The genetic gains were 3.52 percentage points higher in D1 and did not change in D2. Despite similar results, the standard model, modeled with covariance structures that assume homogeneity of co-variances, was not the most statistically appropriate model f... Mostrar Tudo |
Thesagro: |
Árvore Frutífera; Floresta; Melhoramento. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 02460naa a2200253 a 4500 001 2149112 005 2022-12-01 008 2022 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s11295-022-01576-5$2DOI 100 1 $aCHAVES, S. F. S. 245 $aApplication of linear mixed models for multiple harvest/site trial analyses in perennial plant breeding.$h[electronic resource] 260 $c2022 520 $aThe optimization of perennial plant breeding necessarily involves the evaluation of multi-harvest and/or multi-site trials. In these situations, modeling covariance structures can elevate accuracy. This study aimed to evaluate different covariance structures for multi-harvest and multi-site trial analyses, using two datasets (D1 and D2). In D1, 25 hybrids of Theobroma grandiflorum were evaluated in a complete randomized block design, during twelve consecutive harvest years. In D2, 215 clones of Eucalyptus spp. were evaluated in a complete randomized block design, in four sites. For both datasets, the covariance structures of the random effects were modeled, and their adequacy was tested by the Akaike and Bayesian information criteria. From the selected model, the variance components and genetic parameters were estimated. We also compared the expected genetic gains and the rankings of genotypes based on the genotypic values provided by the basic and the selected models. For D1, the third-order factor analytic model was the most suitable for genetic effects, while for D2, the unstructured model showed the best fit for such effects. The models provided a better insight into the variances dynamics over the harvest years/sites. The genetic gains were 3.52 percentage points higher in D1 and did not change in D2. Despite similar results, the standard model, modeled with covariance structures that assume homogeneity of co-variances, was not the most statistically appropriate model for D2 according to the information criteria. Therefore, the modeling of covariance structures can and should be used in the genetic evaluation of perennial plants 650 $aÁrvore Frutífera 650 $aFloresta 650 $aMelhoramento 700 1 $aEVANGELISTA, J. S. P. C. 700 1 $aALVES, R. S. 700 1 $aFERREIRA, F. M. 700 1 $aDIAS, L. A. S. 700 1 $aALVES, R. M. 700 1 $aDIAS, K. O. G. 700 1 $aBHERING, L. L. 773 $tTree Genetics & Genomes$gv. 18, n. 6, Article number: 44, Dec. 2022.
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Embrapa Amazônia Oriental (CPATU) |
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1. | | GUERREIRO, R. L.; MCGLUE, M. M.; STONE, J. R.; BERGIER, I.; PAROLIN, M.; CAMINHA, S. A. F. da S.; WARREN, L. V.; ASSINE, M. L. Paleoecology explains Holocene chemical changes in lakes of the Nhecolândia (Pantanal-Brazil). Hydrobiologia, v. 815, n. 1, p. 1-19, jun. 2018.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Pantanal. |
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2. | | GUERREIRO, R. L.; BERGIER, I.; McGLUE, M. M.; WARREN, L. V.; ABREU, U. G. P. de; ABRAHÃO, J.; ASSINE, M. L. The soda lakes of Nhecolândia: a conservation opportunity for the Pantanal wetlands. Perspectives in Ecology and Conservation, v. 17, p. 9-18, 2019.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
Biblioteca(s): Embrapa Pantanal. |
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