Selection of Theobroma grandiflorum clones adapted to agroforestry systems using an additive index.
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1148902 https://doi.org/10.4025/actasciagron.v45i1.57519 |
Resumo: | In fruit tree breeding, selection indices are used to identify the genotypes that combine desirable commercial and non-commercial characteristics. As Theobroma grandiflorum is generally cultivated in agroforestry systems (AFS), there is a need to develop cultivars that are adapted to such environments. In this study, the objective was to select the most promising genotypes for their future use in AFS based on the additive index, a pioneering method for this crop. The trial was carried out for 12 years in an agroforestry system in the municipality of Tomé-Açu, Pará State, Brazil. The 16 evaluated clones were completely randomised with a variable number of repetitions. The average number of fruits produced as well as the morpho-agronomic characteristics of the fruits were analysed. Mixed linear models were used to estimate the components of variance and predict the genotypic values. The genetic correlation between the variables was estimated, and the selection of genotypes was based on the additive index, with a positive orientation of all variables except the thickness of the fruit shells and the weight of the fruits. Clones 42, 44, 46, 47, 57, 61, and 64 performed well for all the analysed variables, resulting in a selection gain of 7.3% and low incidence rates of witches? broom disease. These genotypes can be made available to producers in the form of clones for use in AFS and can further be included in future hybridisations in T. grandiflorum breeding. |
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Selection of Theobroma grandiflorum clones adapted to agroforestry systems using an additive index.Sistema agroflorestalTheobroma GrandiflorumÁrvore FrutíferaParâmetro GenéticoÍndice de SeleçãoCloneSelection indexMoniliophthora perniciosaIn fruit tree breeding, selection indices are used to identify the genotypes that combine desirable commercial and non-commercial characteristics. As Theobroma grandiflorum is generally cultivated in agroforestry systems (AFS), there is a need to develop cultivars that are adapted to such environments. In this study, the objective was to select the most promising genotypes for their future use in AFS based on the additive index, a pioneering method for this crop. The trial was carried out for 12 years in an agroforestry system in the municipality of Tomé-Açu, Pará State, Brazil. The 16 evaluated clones were completely randomised with a variable number of repetitions. The average number of fruits produced as well as the morpho-agronomic characteristics of the fruits were analysed. Mixed linear models were used to estimate the components of variance and predict the genotypic values. The genetic correlation between the variables was estimated, and the selection of genotypes was based on the additive index, with a positive orientation of all variables except the thickness of the fruit shells and the weight of the fruits. Clones 42, 44, 46, 47, 57, 61, and 64 performed well for all the analysed variables, resulting in a selection gain of 7.3% and low incidence rates of witches? broom disease. These genotypes can be made available to producers in the form of clones for use in AFS and can further be included in future hybridisations in T. grandiflorum breeding.RAFAEL MOYSES ALVES, CPATU; SAULO FABRÍCIO DA SILVA CHAVES, UNIVERSIDADE FEDERAL DE VIÇOSA.ALVES, R. M.CHAVES, S. F. da S.2022-11-29T15:01:45Z2022-11-29T15:01:45Z2022-11-292023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleActa Scientiarum. Agronomy, v. 45, e57519, 2023.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1148902https://doi.org/10.4025/actasciagron.v45i1.57519enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2022-11-29T15:01:45Zoai:www.alice.cnptia.embrapa.br:doc/1148902Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542022-11-29T15:01:45falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542022-11-29T15:01:45Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Selection of Theobroma grandiflorum clones adapted to agroforestry systems using an additive index. |
title |
Selection of Theobroma grandiflorum clones adapted to agroforestry systems using an additive index. |
spellingShingle |
Selection of Theobroma grandiflorum clones adapted to agroforestry systems using an additive index. ALVES, R. M. Sistema agroflorestal Theobroma Grandiflorum Árvore Frutífera Parâmetro Genético Índice de Seleção Clone Selection index Moniliophthora perniciosa |
title_short |
Selection of Theobroma grandiflorum clones adapted to agroforestry systems using an additive index. |
title_full |
Selection of Theobroma grandiflorum clones adapted to agroforestry systems using an additive index. |
title_fullStr |
Selection of Theobroma grandiflorum clones adapted to agroforestry systems using an additive index. |
title_full_unstemmed |
Selection of Theobroma grandiflorum clones adapted to agroforestry systems using an additive index. |
title_sort |
Selection of Theobroma grandiflorum clones adapted to agroforestry systems using an additive index. |
author |
ALVES, R. M. |
author_facet |
ALVES, R. M. CHAVES, S. F. da S. |
author_role |
author |
author2 |
CHAVES, S. F. da S. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
RAFAEL MOYSES ALVES, CPATU; SAULO FABRÍCIO DA SILVA CHAVES, UNIVERSIDADE FEDERAL DE VIÇOSA. |
dc.contributor.author.fl_str_mv |
ALVES, R. M. CHAVES, S. F. da S. |
dc.subject.por.fl_str_mv |
Sistema agroflorestal Theobroma Grandiflorum Árvore Frutífera Parâmetro Genético Índice de Seleção Clone Selection index Moniliophthora perniciosa |
topic |
Sistema agroflorestal Theobroma Grandiflorum Árvore Frutífera Parâmetro Genético Índice de Seleção Clone Selection index Moniliophthora perniciosa |
description |
In fruit tree breeding, selection indices are used to identify the genotypes that combine desirable commercial and non-commercial characteristics. As Theobroma grandiflorum is generally cultivated in agroforestry systems (AFS), there is a need to develop cultivars that are adapted to such environments. In this study, the objective was to select the most promising genotypes for their future use in AFS based on the additive index, a pioneering method for this crop. The trial was carried out for 12 years in an agroforestry system in the municipality of Tomé-Açu, Pará State, Brazil. The 16 evaluated clones were completely randomised with a variable number of repetitions. The average number of fruits produced as well as the morpho-agronomic characteristics of the fruits were analysed. Mixed linear models were used to estimate the components of variance and predict the genotypic values. The genetic correlation between the variables was estimated, and the selection of genotypes was based on the additive index, with a positive orientation of all variables except the thickness of the fruit shells and the weight of the fruits. Clones 42, 44, 46, 47, 57, 61, and 64 performed well for all the analysed variables, resulting in a selection gain of 7.3% and low incidence rates of witches? broom disease. These genotypes can be made available to producers in the form of clones for use in AFS and can further be included in future hybridisations in T. grandiflorum breeding. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-11-29T15:01:45Z 2022-11-29T15:01:45Z 2022-11-29 2023 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Acta Scientiarum. Agronomy, v. 45, e57519, 2023. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1148902 https://doi.org/10.4025/actasciagron.v45i1.57519 |
identifier_str_mv |
Acta Scientiarum. Agronomy, v. 45, e57519, 2023. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1148902 https://doi.org/10.4025/actasciagron.v45i1.57519 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503534979317760 |