Variations in the hierarchical architecture of nothofagus obliqua: evidence from juvenile naturallyregenerated trees and from seedlings obtained by controlled crosses of selected individuals
Background: Many tree species with potential for wood production present high intra-specific variations in the extent of trunk differentiation (i.e. hierarchical architecture). The identification of multiple-scale traits related to hierarchical architecture could improve selection criteria for domes...
| Autores principales: | , , , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Scion
2025
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/22741 https://nzjforestryscience.nz/index.php/nzjfs/article/view/381 https://doi.org/10.33494/nzjfs552025x381x |
| _version_ | 1855038568393605120 |
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| author | Torres, Cristian Daniel Magnin, Amaru Gallo, Leonardo Ariel Stecconi, Marina Salgado, Mariana Sosa, Claudia Maricel Schinelli Casares, Teresa Puntieri, Javier Guido |
| author_browse | Gallo, Leonardo Ariel Magnin, Amaru Puntieri, Javier Guido Salgado, Mariana Schinelli Casares, Teresa Sosa, Claudia Maricel Stecconi, Marina Torres, Cristian Daniel |
| author_facet | Torres, Cristian Daniel Magnin, Amaru Gallo, Leonardo Ariel Stecconi, Marina Salgado, Mariana Sosa, Claudia Maricel Schinelli Casares, Teresa Puntieri, Javier Guido |
| author_sort | Torres, Cristian Daniel |
| collection | INTA Digital |
| description | Background: Many tree species with potential for wood production present high intra-specific variations in the extent of trunk differentiation (i.e. hierarchical architecture). The identification of multiple-scale traits related to hierarchical architecture could improve selection criteria for domestication.
Methods: We investigated the hierarchical architecture of Nothofagus obliqua, a valuable species for timber production, but with high structural variability. Young trees in even-aged natural regeneration gaps, and seedlings derived from controlled crosses and open pollination were studied. For the second approach, trees with contrasting degree of hierarchical architecture were manually crossed. In both, juvenile plants and seedlings, we analyzed trunk growth unit traits and hierarchical architecture indices based on the relative size and branching angle of main branches.
Results: In regeneration gaps, hierarchical architecture was positively related to height and diameter. Apex persistence, the number of sylleptic branches and mean internode length were indicative of larger and more hierarchical trees. Some support is provided to the idea that adult trees with a notably hierarchical architecture could produce young trees with early signs of a hierarchical architecture. In seedlings, hierarchical architecture was negatively related to basal diameter.
Conclusions: Some growth unit traits that differed among progenies and were related to hierarchical architecture could be considered for the development of selection criteria for young trees. |
| format | info:ar-repo/semantics/artículo |
| id | INTA22741 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Scion |
| publisherStr | Scion |
| record_format | dspace |
| spelling | INTA227412025-06-23T10:29:08Z Variations in the hierarchical architecture of nothofagus obliqua: evidence from juvenile naturallyregenerated trees and from seedlings obtained by controlled crosses of selected individuals Variaciones en la arquitectura jerárquica de nothofagus obliqua: evidencia de árboles juveniles regenerados naturalmente y de plántulas obtenidas mediante cruces controlados de individuos seleccionados Torres, Cristian Daniel Magnin, Amaru Gallo, Leonardo Ariel Stecconi, Marina Salgado, Mariana Sosa, Claudia Maricel Schinelli Casares, Teresa Puntieri, Javier Guido Architecture Domestication Arquitectura Domesticación Nothofagus Cruces Controlados Nothofagus obliqua Controlled-crosses Annual Shoot Background: Many tree species with potential for wood production present high intra-specific variations in the extent of trunk differentiation (i.e. hierarchical architecture). The identification of multiple-scale traits related to hierarchical architecture could improve selection criteria for domestication. Methods: We investigated the hierarchical architecture of Nothofagus obliqua, a valuable species for timber production, but with high structural variability. Young trees in even-aged natural regeneration gaps, and seedlings derived from controlled crosses and open pollination were studied. For the second approach, trees with contrasting degree of hierarchical architecture were manually crossed. In both, juvenile plants and seedlings, we analyzed trunk growth unit traits and hierarchical architecture indices based on the relative size and branching angle of main branches. Results: In regeneration gaps, hierarchical architecture was positively related to height and diameter. Apex persistence, the number of sylleptic branches and mean internode length were indicative of larger and more hierarchical trees. Some support is provided to the idea that adult trees with a notably hierarchical architecture could produce young trees with early signs of a hierarchical architecture. In seedlings, hierarchical architecture was negatively related to basal diameter. Conclusions: Some growth unit traits that differed among progenies and were related to hierarchical architecture could be considered for the development of selection criteria for young trees. EEAf Esquel Fil: Torres, Cristian Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA); Argentina. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA); Argentina Fil: Magnin, Amaru. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA); Argentina. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA); Argentina Fil: Gallo, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB); Argentina Fil: Gallo, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB); Argentina Fil: Stecconi, Marina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA); Argentina. Universidad Nacional del Comahue. Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA); Argentina Fil: Salgado, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural (IRNAD); Argentina. Universidad Nacional de Río Negro. Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural (IRNAD); Argentina Fil: Sosa, Claudia Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste (IBONE); Argentina. Universidad Nacional del Nordeste. Instituto de Botánica del Nordeste (IBONE); Argentina Fil: Schinelli Casares, Teresa. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; Argentina Fil: Puntieri, Javier Guido. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural (IRNAD); Argentina. Universidad Nacional de Río Negro. Instituto de Investigaciones en Recursos Naturales, Agroecología y Desarrollo Rural (IRNAD); Argentina 2025-06-23T10:12:22Z 2025-06-23T10:12:22Z 2025-05-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/22741 https://nzjforestryscience.nz/index.php/nzjfs/article/view/381 Torres, CD., Magnin, A., Gallo, LA., Stecconi, M., Salgado, M., Sosa, CM., Schinelli Casares, T., y Puntieri, JG. (2025). Variaciones en la arquitectura jerárquica de Nothofagus obliqua: evidencia de árboles juveniles regenerados naturalmente y de plántulas obtenidas mediante cruzamientos controlados de individuos seleccionados. New Zealand Journal of Forestry Science , 55. https://doi.org/10.33494/nzjfs552025x381x 1179-5395 https://doi.org/10.33494/nzjfs552025x381x eng 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) application/pdf Lanín, Parque Nacional .......... (parque nacional) (Mundo, Sudamérica, Argentina, Neuquén) 1101666 Scion New Zealand Journal of Forestry Science 55 : 8 (2025) |
| spellingShingle | Architecture Domestication Arquitectura Domesticación Nothofagus Cruces Controlados Nothofagus obliqua Controlled-crosses Annual Shoot Torres, Cristian Daniel Magnin, Amaru Gallo, Leonardo Ariel Stecconi, Marina Salgado, Mariana Sosa, Claudia Maricel Schinelli Casares, Teresa Puntieri, Javier Guido Variations in the hierarchical architecture of nothofagus obliqua: evidence from juvenile naturallyregenerated trees and from seedlings obtained by controlled crosses of selected individuals |
| title | Variations in the hierarchical architecture of nothofagus obliqua: evidence from juvenile naturallyregenerated trees and from seedlings obtained by controlled crosses of selected individuals |
| title_full | Variations in the hierarchical architecture of nothofagus obliqua: evidence from juvenile naturallyregenerated trees and from seedlings obtained by controlled crosses of selected individuals |
| title_fullStr | Variations in the hierarchical architecture of nothofagus obliqua: evidence from juvenile naturallyregenerated trees and from seedlings obtained by controlled crosses of selected individuals |
| title_full_unstemmed | Variations in the hierarchical architecture of nothofagus obliqua: evidence from juvenile naturallyregenerated trees and from seedlings obtained by controlled crosses of selected individuals |
| title_short | Variations in the hierarchical architecture of nothofagus obliqua: evidence from juvenile naturallyregenerated trees and from seedlings obtained by controlled crosses of selected individuals |
| title_sort | variations in the hierarchical architecture of nothofagus obliqua evidence from juvenile naturallyregenerated trees and from seedlings obtained by controlled crosses of selected individuals |
| topic | Architecture Domestication Arquitectura Domesticación Nothofagus Cruces Controlados Nothofagus obliqua Controlled-crosses Annual Shoot |
| url | http://hdl.handle.net/20.500.12123/22741 https://nzjforestryscience.nz/index.php/nzjfs/article/view/381 https://doi.org/10.33494/nzjfs552025x381x |
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