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Registro Completo |
Biblioteca(s): |
Embrapa Florestas; Embrapa Gado de Leite. |
Data corrente: |
13/01/2021 |
Data da última atualização: |
09/08/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FERREIRA, F. M.; ROCHA, J. R. do A. S. de C.; ALVES, R. S.; ELIZEU, A. M.; BENITES, F. R. G.; RESENDE, M. D. V. de; SOUZA SOBRINHO, F. de; BHERING, L. L. |
Afiliação: |
Filipe Manoel Ferreira, UFV; João Romero do Amaral Santos de Carvalho Rocha, UFV; Rodrigo Silva Alves, UFV; Arthur Mayrink Elizeu, UFV; FLAVIO RODRIGO GANDOLFI BENITES, CNPGL; MARCOS DEON VILELA DE RESENDE, CNPF; FAUSTO DE SOUZA SOBRINHO, CNPGL; Leonardo Lopes Bhering, UFV. |
Título: |
Estimates of repeatability coefficients and optimum number of measures for genetic selection of Cynodon spp. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Euphytica, v. 216, article 70, 2020. |
DOI: |
https://doi.org/10.1007/s10681-020-02605-x |
Idioma: |
Inglês |
Conteúdo: |
The genus Cynodon includes species that have huge potential to produce high-quality fodder, for grazing and hay production. In perennial forage breeding, selection should be performed based on repeated measurements in the same individual over time, which maximizes the selective efficiency. Thus, the objectives of this study were to estimate the coefficients of repeatability and optimal number of measures for the genetic selection of Cynodon spp. clones. We evaluated 202 clones, being five checks, during four harvests, in augmented block design. A mixed model methodology (REML/BLUP) was used to estimate the variance components and predict the genotypic values. The repeatability coefficient for plant height, green weight, dry matter, and plant vigor were equal to 0.50, 0.67, 0.25, and 0.73, respectively. The accuracies obtained by performing m repeated measures revealed that 5, 2, 13, and 2 measurements are required to attain an accuracy C 90% in genetic gain from the selection for plant height, green weight, dry matter, and plant vigor, respectively. Furthermore, the efficiency of performing four measurements compared with that of performing only one measurement was 27%, 15%, 51%, and 12% for plant height, green weight, dry matter, and vigor, respectively. In addition, the additive index, adopting a 10% selection intensity, was used in simultaneous selection, leading to desirable genetic gains for plant height, green weight, and plant vigor. In conclusion, the use of the repeatability coefficient suggests performing three measurements to obtain a high accuracy and good efficiency on the selection of superior genotypes of Cynodon spp. MenosThe genus Cynodon includes species that have huge potential to produce high-quality fodder, for grazing and hay production. In perennial forage breeding, selection should be performed based on repeated measurements in the same individual over time, which maximizes the selective efficiency. Thus, the objectives of this study were to estimate the coefficients of repeatability and optimal number of measures for the genetic selection of Cynodon spp. clones. We evaluated 202 clones, being five checks, during four harvests, in augmented block design. A mixed model methodology (REML/BLUP) was used to estimate the variance components and predict the genotypic values. The repeatability coefficient for plant height, green weight, dry matter, and plant vigor were equal to 0.50, 0.67, 0.25, and 0.73, respectively. The accuracies obtained by performing m repeated measures revealed that 5, 2, 13, and 2 measurements are required to attain an accuracy C 90% in genetic gain from the selection for plant height, green weight, dry matter, and plant vigor, respectively. Furthermore, the efficiency of performing four measurements compared with that of performing only one measurement was 27%, 15%, 51%, and 12% for plant height, green weight, dry matter, and vigor, respectively. In addition, the additive index, adopting a 10% selection intensity, was used in simultaneous selection, leading to desirable genetic gains for plant height, green weight, and plant vigor. In conclusion, the use of the repe... Mostrar Tudo |
Palavras-Chave: |
Bermudagrass; Coeficiente de repetibilidade; Forage breeding; Forrageira; Longitudinal data; Mixed models. |
Thesagro: |
Forragem; Melhoramento Genético Vegetal; Seleção Genética. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal G Melhoramento Genético |
Marc: |
LEADER 02665naa a2200325 a 4500 001 2133355 005 2021-08-09 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s10681-020-02605-x$2DOI 100 1 $aFERREIRA, F. M. 245 $aEstimates of repeatability coefficients and optimum number of measures for genetic selection of Cynodon spp.$h[electronic resource] 260 $c2020 520 $aThe genus Cynodon includes species that have huge potential to produce high-quality fodder, for grazing and hay production. In perennial forage breeding, selection should be performed based on repeated measurements in the same individual over time, which maximizes the selective efficiency. Thus, the objectives of this study were to estimate the coefficients of repeatability and optimal number of measures for the genetic selection of Cynodon spp. clones. We evaluated 202 clones, being five checks, during four harvests, in augmented block design. A mixed model methodology (REML/BLUP) was used to estimate the variance components and predict the genotypic values. The repeatability coefficient for plant height, green weight, dry matter, and plant vigor were equal to 0.50, 0.67, 0.25, and 0.73, respectively. The accuracies obtained by performing m repeated measures revealed that 5, 2, 13, and 2 measurements are required to attain an accuracy C 90% in genetic gain from the selection for plant height, green weight, dry matter, and plant vigor, respectively. Furthermore, the efficiency of performing four measurements compared with that of performing only one measurement was 27%, 15%, 51%, and 12% for plant height, green weight, dry matter, and vigor, respectively. In addition, the additive index, adopting a 10% selection intensity, was used in simultaneous selection, leading to desirable genetic gains for plant height, green weight, and plant vigor. In conclusion, the use of the repeatability coefficient suggests performing three measurements to obtain a high accuracy and good efficiency on the selection of superior genotypes of Cynodon spp. 650 $aForragem 650 $aMelhoramento Genético Vegetal 650 $aSeleção Genética 653 $aBermudagrass 653 $aCoeficiente de repetibilidade 653 $aForage breeding 653 $aForrageira 653 $aLongitudinal data 653 $aMixed models 700 1 $aROCHA, J. R. do A. S. de C. 700 1 $aALVES, R. S. 700 1 $aELIZEU, A. M. 700 1 $aBENITES, F. R. G. 700 1 $aRESENDE, M. D. V. de 700 1 $aSOUZA SOBRINHO, F. de 700 1 $aBHERING, L. L. 773 $tEuphytica$gv. 216, article 70, 2020.
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Embrapa Gado de Leite (CNPGL) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Hortaliças. Para informações adicionais entre em contato com cnph.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
30/12/2019 |
Data da última atualização: |
30/12/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
SILVA, P. P.; FREITAS, R. A. de; NASCIMENTO, W. M. |
Afiliação: |
PATRÍCIA PEREIRA SILVA, BOLSISTA CNPQ/CNPH; RAQUEL ALVES DE FREITAS, SIN; WARLEY MARCOS NASCIMENTO, CNPH. |
Título: |
Evaluation of processing tomato seed quality using different vigor tests. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Acta Horticulturae, v. 1249, p. 175-179 , Sept. 2019. Edição do Proceedings of VI International Symposium on Seed, Transplant and Stand Establishment of Horticultural Crops, Brasília. |
ISSN: |
2406-6168 |
Idioma: |
Inglês |
Conteúdo: |
In order to verify the efficiency of different vigor tests aimed to evaluate the physiological seed quality, two seed lots from three processing tomato cultivars (?Tospodoro?, ?Viradoro? and ?Nemadoro?), from Embrapa Vegetables? breeding program were used in this study. |
Palavras-Chave: |
Cultivar Nemadoro; Cultivar Tospodoro; Cultivar Viradoro. |
Thesagro: |
Qualidade; Semente; Teste de Vigor. |
Thesaurus NAL: |
Seed quality; Solanum lycopersicum; Tomatoes. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01144naa a2200265 a 4500 001 2117931 005 2019-12-30 008 2019 bl uuuu u00u1 u #d 022 $a2406-6168 100 1 $aSILVA, P. P. 245 $aEvaluation of processing tomato seed quality using different vigor tests.$h[electronic resource] 260 $c2019 520 $aIn order to verify the efficiency of different vigor tests aimed to evaluate the physiological seed quality, two seed lots from three processing tomato cultivars (?Tospodoro?, ?Viradoro? and ?Nemadoro?), from Embrapa Vegetables? breeding program were used in this study. 650 $aSeed quality 650 $aSolanum lycopersicum 650 $aTomatoes 650 $aQualidade 650 $aSemente 650 $aTeste de Vigor 653 $aCultivar Nemadoro 653 $aCultivar Tospodoro 653 $aCultivar Viradoro 700 1 $aFREITAS, R. A. de 700 1 $aNASCIMENTO, W. M. 773 $tActa Horticulturae$gv. 1249, p. 175-179 , Sept. 2019. Edição do Proceedings of VI International Symposium on Seed, Transplant and Stand Establishment of Horticultural Crops, Brasília.
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