Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites

Autores
Belaber, Ector; Borralho, Nuno M.; Cappa, Eduardo Pablo
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Traditional quantitative genetic models in forestry often overlook the influence of an individual’s genes on neighboring trees. However, genetic competition models help bridge this gap. Competition varies among populations, over time, and across environments, yet forest breeders rarely monitor these dynamics or their effects on selected genotypes. We investigated the effects of competition on genetic variances, breeding value accuracy, and selection response in 14 Pinus taeda L. progeny tests using spatial (Spa) and spatial-competition (Spa-Comp) individual-tree mixed models. Our analysis covered traits such as diameter at breast height (DBH), total height (TH), and stem straightness (STR) across ages (3–21 years) and sites (altitude, soil texture, drainage). DBH was more affected by genetic competition than TH and STR, with effects varying across ages and sites. Directcompetition genetic correlations were negative for DBH from age 5 onward but positive for TH, reducing total heritable variance for DBH (<43.1%) while increasing for TH (<95.7%). Genetic competition accounted for less than 26% of direct additive variance. For DBH, the Spa-Comp model slightly improved breeding value accuracy (<~4%), while Spa inflated selection esponse (<3.83 percentage points), yet rank changes were minimal (common selected trees > 89%). These findings indicate that while ompetition inflates genetic gains, its impact on selection efficiency is minimal.
EEA Montecarlo
Fil: Belaber, Ector C. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentina
Fil: Borralho, N. RAIZ Forest and Paper Research Institute; Portugal
Fil: Cappa, Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina
Fil: Cappa, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fuente
Forests 16 (4) : 675. (April 2025)
Materia
Pinus
Pinus taeda
Genética
Fitomejoramiento
Argentina
Genetics
Plant Breeding
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
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spelling Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and SitesBelaber, EctorBorralho, Nuno M.Cappa, Eduardo PabloPinusPinus taedaGenéticaFitomejoramientoArgentinaGeneticsPlant BreedingTraditional quantitative genetic models in forestry often overlook the influence of an individual’s genes on neighboring trees. However, genetic competition models help bridge this gap. Competition varies among populations, over time, and across environments, yet forest breeders rarely monitor these dynamics or their effects on selected genotypes. We investigated the effects of competition on genetic variances, breeding value accuracy, and selection response in 14 Pinus taeda L. progeny tests using spatial (Spa) and spatial-competition (Spa-Comp) individual-tree mixed models. Our analysis covered traits such as diameter at breast height (DBH), total height (TH), and stem straightness (STR) across ages (3–21 years) and sites (altitude, soil texture, drainage). DBH was more affected by genetic competition than TH and STR, with effects varying across ages and sites. Directcompetition genetic correlations were negative for DBH from age 5 onward but positive for TH, reducing total heritable variance for DBH (<43.1%) while increasing for TH (<95.7%). Genetic competition accounted for less than 26% of direct additive variance. For DBH, the Spa-Comp model slightly improved breeding value accuracy (<~4%), while Spa inflated selection esponse (<3.83 percentage points), yet rank changes were minimal (common selected trees > 89%). These findings indicate that while ompetition inflates genetic gains, its impact on selection efficiency is minimal.EEA MontecarloFil: Belaber, Ector C. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; ArgentinaFil: Borralho, N. RAIZ Forest and Paper Research Institute; PortugalFil: Cappa, Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; ArgentinaFil: Cappa, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaMDPI2025-06-05T10:51:39Z2025-06-05T10:51:39Z2025-04-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/22511https://www.mdpi.com/1999-4907/16/4/675Belaber, E.C.; Borralho, N.M.; Cappa, E.P. Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites. Forests 2025, 16, 675. https://doi.org/ 10.3390/f160406751999-4907https://doi.org/10.3390/f16040675Forests 16 (4) : 675. (April 2025)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repograntAgreement/INTA/2023-PE-L01-I067, Mejoramiento genético y silvicultura de plantaciones para la producción sostenible de productos forestales para distintos destinos industrialesinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-29T13:47:20Zoai:localhost:20.500.12123/22511instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:47:20.494INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites
title Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites
spellingShingle Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites
Belaber, Ector
Pinus
Pinus taeda
Genética
Fitomejoramiento
Argentina
Genetics
Plant Breeding
title_short Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites
title_full Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites
title_fullStr Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites
title_full_unstemmed Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites
title_sort Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites
dc.creator.none.fl_str_mv Belaber, Ector
Borralho, Nuno M.
Cappa, Eduardo Pablo
author Belaber, Ector
author_facet Belaber, Ector
Borralho, Nuno M.
Cappa, Eduardo Pablo
author_role author
author2 Borralho, Nuno M.
Cappa, Eduardo Pablo
author2_role author
author
dc.subject.none.fl_str_mv Pinus
Pinus taeda
Genética
Fitomejoramiento
Argentina
Genetics
Plant Breeding
topic Pinus
Pinus taeda
Genética
Fitomejoramiento
Argentina
Genetics
Plant Breeding
dc.description.none.fl_txt_mv Traditional quantitative genetic models in forestry often overlook the influence of an individual’s genes on neighboring trees. However, genetic competition models help bridge this gap. Competition varies among populations, over time, and across environments, yet forest breeders rarely monitor these dynamics or their effects on selected genotypes. We investigated the effects of competition on genetic variances, breeding value accuracy, and selection response in 14 Pinus taeda L. progeny tests using spatial (Spa) and spatial-competition (Spa-Comp) individual-tree mixed models. Our analysis covered traits such as diameter at breast height (DBH), total height (TH), and stem straightness (STR) across ages (3–21 years) and sites (altitude, soil texture, drainage). DBH was more affected by genetic competition than TH and STR, with effects varying across ages and sites. Directcompetition genetic correlations were negative for DBH from age 5 onward but positive for TH, reducing total heritable variance for DBH (<43.1%) while increasing for TH (<95.7%). Genetic competition accounted for less than 26% of direct additive variance. For DBH, the Spa-Comp model slightly improved breeding value accuracy (<~4%), while Spa inflated selection esponse (<3.83 percentage points), yet rank changes were minimal (common selected trees > 89%). These findings indicate that while ompetition inflates genetic gains, its impact on selection efficiency is minimal.
EEA Montecarlo
Fil: Belaber, Ector C. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentina
Fil: Borralho, N. RAIZ Forest and Paper Research Institute; Portugal
Fil: Cappa, Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Recursos Biológicos; Argentina
Fil: Cappa, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Traditional quantitative genetic models in forestry often overlook the influence of an individual’s genes on neighboring trees. However, genetic competition models help bridge this gap. Competition varies among populations, over time, and across environments, yet forest breeders rarely monitor these dynamics or their effects on selected genotypes. We investigated the effects of competition on genetic variances, breeding value accuracy, and selection response in 14 Pinus taeda L. progeny tests using spatial (Spa) and spatial-competition (Spa-Comp) individual-tree mixed models. Our analysis covered traits such as diameter at breast height (DBH), total height (TH), and stem straightness (STR) across ages (3–21 years) and sites (altitude, soil texture, drainage). DBH was more affected by genetic competition than TH and STR, with effects varying across ages and sites. Directcompetition genetic correlations were negative for DBH from age 5 onward but positive for TH, reducing total heritable variance for DBH (<43.1%) while increasing for TH (<95.7%). Genetic competition accounted for less than 26% of direct additive variance. For DBH, the Spa-Comp model slightly improved breeding value accuracy (<~4%), while Spa inflated selection esponse (<3.83 percentage points), yet rank changes were minimal (common selected trees > 89%). These findings indicate that while ompetition inflates genetic gains, its impact on selection efficiency is minimal.
publishDate 2025
dc.date.none.fl_str_mv 2025-06-05T10:51:39Z
2025-06-05T10:51:39Z
2025-04-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/22511
https://www.mdpi.com/1999-4907/16/4/675
Belaber, E.C.; Borralho, N.M.; Cappa, E.P. Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites. Forests 2025, 16, 675. https://doi.org/ 10.3390/f16040675
1999-4907
https://doi.org/10.3390/f16040675
url http://hdl.handle.net/20.500.12123/22511
https://www.mdpi.com/1999-4907/16/4/675
https://doi.org/10.3390/f16040675
identifier_str_mv Belaber, E.C.; Borralho, N.M.; Cappa, E.P. Genetics of Growth and Stem Straightness Traits in Pinus taeda in Argentina: Exploring Genetic Competition Across Ages and Sites. Forests 2025, 16, 675. https://doi.org/ 10.3390/f16040675
1999-4907
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repograntAgreement/INTA/2023-PE-L01-I067, Mejoramiento genético y silvicultura de plantaciones para la producción sostenible de productos forestales para distintos destinos industriales
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv Forests 16 (4) : 675. (April 2025)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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