Morphometry of tracheids of Pinus taeda L. from a pruning test in NE Argentina
The northeast region of Argentina is characterized by fast-growing forest plantations, Pinus taeda among them. The objective of this study was to evaluate the influence of pruning and stand structure on the morphometric characteristics of tree tracheids. We evaluated 18 trees of 16 years old, from a...
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| Format: | Artículo |
| Language: | Inglés |
| Published: |
Centro de Pesquisas Florestais da Faculdade de Florestas da Universidade Federal do Paraná
2020
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| Online Access: | http://hdl.handle.net/20.500.12123/6654 https://revistas.ufpr.br/floresta/article/view/59546/38962 http://dx.doi.org/10.5380/rf.v49i3.59546 |
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| author | Winck, Rosa Ángela Martínez, María Isabel Romberg, Elianne Itatí Fassola, Hugo Enrique Aquino, Diego Rolando Bohren, Alicia Violeta |
| author_browse | Aquino, Diego Rolando Bohren, Alicia Violeta Fassola, Hugo Enrique Martínez, María Isabel Romberg, Elianne Itatí Winck, Rosa Ángela |
| author_facet | Winck, Rosa Ángela Martínez, María Isabel Romberg, Elianne Itatí Fassola, Hugo Enrique Aquino, Diego Rolando Bohren, Alicia Violeta |
| author_sort | Winck, Rosa Ángela |
| collection | INTA Digital |
| description | The northeast region of Argentina is characterized by fast-growing forest plantations, Pinus taeda among them. The objective of this study was to evaluate the influence of pruning and stand structure on the morphometric characteristics of tree tracheids. We evaluated 18 trees of 16 years old, from a silvicultural stand essay, with 1660 plants/ha as initial density, without thinning, three pruning treatments 0%, 50% and 70% removal of the green crown belong to the dominant, codominant and suppressed strata. Tree slices were taken at 1.3 m height, the conditioned samples were observed and measured with a microscope with digital camera. The data was analyzed using mixed linear models. Pruning did not have effect on the width and length of tracheids, but it affected to the cell wall thickness, which decreased with increasing pruning intensity. While the social position (stratum) had significant influences on the length of tracheids, given greater for individual in dominant stratum, followed by codominant and suppressed stratum. The cell wall width and thickness were not affected by the stratum. Regardless of the social position in the stand, the tracheid’s length showed an increasing pattern from pith to bark with the lower values near to the pith. |
| format | Artículo |
| id | INTA6654 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Centro de Pesquisas Florestais da Faculdade de Florestas da Universidade Federal do Paraná |
| publisherStr | Centro de Pesquisas Florestais da Faculdade de Florestas da Universidade Federal do Paraná |
| record_format | dspace |
| spelling | INTA66542020-01-10T15:06:17Z Morphometry of tracheids of Pinus taeda L. from a pruning test in NE Argentina Winck, Rosa Ángela Martínez, María Isabel Romberg, Elianne Itatí Fassola, Hugo Enrique Aquino, Diego Rolando Bohren, Alicia Violeta Pinus Pinus Taeda Traqueidos Poda Madera Calidad Tracheids Pruning Wood Quality Región Noreste, Argentina The northeast region of Argentina is characterized by fast-growing forest plantations, Pinus taeda among them. The objective of this study was to evaluate the influence of pruning and stand structure on the morphometric characteristics of tree tracheids. We evaluated 18 trees of 16 years old, from a silvicultural stand essay, with 1660 plants/ha as initial density, without thinning, three pruning treatments 0%, 50% and 70% removal of the green crown belong to the dominant, codominant and suppressed strata. Tree slices were taken at 1.3 m height, the conditioned samples were observed and measured with a microscope with digital camera. The data was analyzed using mixed linear models. Pruning did not have effect on the width and length of tracheids, but it affected to the cell wall thickness, which decreased with increasing pruning intensity. While the social position (stratum) had significant influences on the length of tracheids, given greater for individual in dominant stratum, followed by codominant and suppressed stratum. The cell wall width and thickness were not affected by the stratum. Regardless of the social position in the stand, the tracheid’s length showed an increasing pattern from pith to bark with the lower values near to the pith. A região nordeste da Argentina e caracterizada por possuir plantações florestais de crescimento rápido, entre elas, Pinus taeda. O objetivo deste estudo foi avaliar a influência da poda e da estrutura vertical das arvores sobre as características morfométricas de traqueídesda árvore. Foram avaliadas 18 árvores de 16 anos de idade, obtidos de um ensaio de silvicultura, com densidade inicial de 1660 plantas / ha, sem desbaste, três tratamentos de poda, com remoção de 0%, 50% e 70% da copa verde da árvore, pertencendo aos estratos dominantes, codominantes e suprimidos. As amostras foram tomadas a uma altura de 1,3 m, foram preparadas as fatias que foram observadas e medidas ao microscópio com uma câmara acoplada. Os dados foram analisados com modelos lineares mistos. A poda não influenciou a largura e no comprimento detraqueídes, mas afetou a espessura da parede celular, que disminuiu com o aumento da intensidade da poda. Enquanto a estrutura vertical das arvores (estrato) teve influência significativa no comprimento dos traqueoides, obtendo valores superiores para o estrato dominante, seguido pelo codominante e suprimido. A largura e espessura da parede celular não foram afetadas pelo estrato. Independentemente de pertencer ao estrato dominante, codominante ou suprimido, o comprimento de traqueídes apresentou um padrão crescente da medula para o córtex, com os valores mais baixos próximos à medula. EEA Montecarlo Fil: Winck, Rosa Angela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentina Fil: Martínez, María Isabel. Universidad Nacional de Misiones. Facultad de Ciencias Forestales; Argentina Fil: Romberg, Elianne Itatí. Universidad Nacional de Misiones. Facultad de Ciencias Forestales; Argentina Fil: Fassola, Hugo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentina Fil: Aquino, Diego Rolando. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentina Fil: Bohren, Alicia Violeta. Universidad Nacional de Misiones. Facultad de Ciencias Forestales; Argentina 2020-01-10T15:03:22Z 2020-01-10T15:03:22Z 2019-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/6654 https://revistas.ufpr.br/floresta/article/view/59546/38962 0015-3826 1982-4688 http://dx.doi.org/10.5380/rf.v49i3.59546 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 Centro de Pesquisas Florestais da Faculdade de Florestas da Universidade Federal do Paraná Revista Floresta 49 (3) : 503-512 (jul.-set. 2019) |
| spellingShingle | Pinus Pinus Taeda Traqueidos Poda Madera Calidad Tracheids Pruning Wood Quality Región Noreste, Argentina Winck, Rosa Ángela Martínez, María Isabel Romberg, Elianne Itatí Fassola, Hugo Enrique Aquino, Diego Rolando Bohren, Alicia Violeta Morphometry of tracheids of Pinus taeda L. from a pruning test in NE Argentina |
| title | Morphometry of tracheids of Pinus taeda L. from a pruning test in NE Argentina |
| title_full | Morphometry of tracheids of Pinus taeda L. from a pruning test in NE Argentina |
| title_fullStr | Morphometry of tracheids of Pinus taeda L. from a pruning test in NE Argentina |
| title_full_unstemmed | Morphometry of tracheids of Pinus taeda L. from a pruning test in NE Argentina |
| title_short | Morphometry of tracheids of Pinus taeda L. from a pruning test in NE Argentina |
| title_sort | morphometry of tracheids of pinus taeda l from a pruning test in ne argentina |
| topic | Pinus Pinus Taeda Traqueidos Poda Madera Calidad Tracheids Pruning Wood Quality Región Noreste, Argentina |
| url | http://hdl.handle.net/20.500.12123/6654 https://revistas.ufpr.br/floresta/article/view/59546/38962 http://dx.doi.org/10.5380/rf.v49i3.59546 |
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