Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado

Detalhes bibliográficos
Autor(a) principal: Bosio, Fabio [UNESP]
Data de Publicação: 2015
Tipo de documento: Tese
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/142970
Resumo: This study approached the seasonality in cambial activity and vegetative phenology, the relationship between these events and their relation with wheater and environmental factors, and also the effects of stem girdling in the structure of secondary xylem in Cerrado species. In order to study of seasonality in cambial activity, monthly samples from main stem of Kielmeyera grandiflora (Wawra) Saddi (Calophyllaceae) were collected from September 2011 to December 2012. In the same period, observations of vegetative phenological phases were made to assess the seasonality in leaf production, and to compare these data with cambial activity. In order to certify which environmental and weather features are related with bud opening and onset of cambial activity, it was calculated the mean value of temperature and photoperiod, and obtained the sum of rainfall in a time scale that ranged from 1 to 30 days before bud opening and the onset of cambial activity. After that, the coefficient of variation was calculated to assess the variability between years. In order to evaluate the stem girdling effect in the structure of secondary xylem was conducted an experiment in field with the species Aegiphila verticillataVell (Lamiaceae), composed of two groups, girdling and control. In girdling group, bark and cambium were completely removed from the central portion of main stem, forming a complete ring. The purpose of girdling was to interrupt the polar flow of auxin produced in the crown, and to assess the effect of its disruption in the structure of secondary xylem. In control group, it has not made a girdling in the stem. To distinguish the xylem formed before girdling from xylem formed after the treatment, an incision (03 cm in length) was made in the regions above and below girdling until reaches the vascular cambium. In the same way, in control group an incision in the bark was made at a central point of the ...
id UNSP_90622bac1b5a5661a1de50b32d75c9d9
oai_identifier_str oai:repositorio.unesp.br:11449/142970
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerradoCambial activity and the girdling effect in the sconary xylem en cerrado speciesXilemaFloemaSistema vascular de plantasPlantas - Efeito da auxinaPlantas dos cerradosCerrado plantsXylemThis study approached the seasonality in cambial activity and vegetative phenology, the relationship between these events and their relation with wheater and environmental factors, and also the effects of stem girdling in the structure of secondary xylem in Cerrado species. In order to study of seasonality in cambial activity, monthly samples from main stem of Kielmeyera grandiflora (Wawra) Saddi (Calophyllaceae) were collected from September 2011 to December 2012. In the same period, observations of vegetative phenological phases were made to assess the seasonality in leaf production, and to compare these data with cambial activity. In order to certify which environmental and weather features are related with bud opening and onset of cambial activity, it was calculated the mean value of temperature and photoperiod, and obtained the sum of rainfall in a time scale that ranged from 1 to 30 days before bud opening and the onset of cambial activity. After that, the coefficient of variation was calculated to assess the variability between years. In order to evaluate the stem girdling effect in the structure of secondary xylem was conducted an experiment in field with the species Aegiphila verticillataVell (Lamiaceae), composed of two groups, girdling and control. In girdling group, bark and cambium were completely removed from the central portion of main stem, forming a complete ring. The purpose of girdling was to interrupt the polar flow of auxin produced in the crown, and to assess the effect of its disruption in the structure of secondary xylem. In control group, it has not made a girdling in the stem. To distinguish the xylem formed before girdling from xylem formed after the treatment, an incision (03 cm in length) was made in the regions above and below girdling until reaches the vascular cambium. In the same way, in control group an incision in the bark was made at a central point of the ...Este estudo abordou a sazonalidade da atividade cambial e da fenologia vegetativa, a relação existente entre estes dois eventos e a relação destes com fatores climáticos e ambientais, bem como os efeitos de anelamento caulinar na estrutura do xilema secundário em espécies de cerrado. Para o estudo da sazonalidade da atividade cambial, amostras do caule principal de Kielmeyera grandiflora (Wawra) Saddi (Calophyllaceae) foram coletadas mensalmente, entre setembro de 2011 e dezembro de 2012. No mesmo período, foram feitas observações mensais das fases fenológicas vegetativas para avaliar a sazonalidade na produção de folhas e comparar estes dados com a atividade cambial. Para verificar quais os fatores ambientais e climáticos relacionados com a brotação e com o início da atividade cambial, foram calculadas as médias de temperatura e do fotoperíodo, e obtido o somatório da precipitação em uma escala de tempo que variou de 1 a 30 dias antes da brotação e do início da atividade cambial. Em seguida, foi calculado o coeficiente de variação das médias para avaliar a variabilidade entre os anos. Para o estudo do efeito de anelamento caulinar na estrutura do xilema secundário foi montado um experimento em campo com a espécie Aegiphila verticillata Vell. (Lamiaceae). O experimento foi composto por dois grupos, anelamento e controle. No grupo anelamento, a casca e o câmbio vascular foram removidos completamente do caule principal na porção central do tronco, formando um anel completo. O objetivo do anelamento foi interromper o fluxo polar de auxina produzido na copa para avaliar os efeitos dessa interrupção na estrutura do xilema secundário. No grupo controle, o caule não foi anelado. Para identificar o xilema secundário formado antes do anelamento do formado posteriormente ao tratamento foi feita uma incisão na casca, nas porções acima e abaixo do anelamento, até atingir o câmbio vascular. Esta incisão...Universidade Estadual Paulista (Unesp)Marcati, Carmen Regina [UNESP]Universidade Estadual Paulista (Unesp)Bosio, Fabio [UNESP]2016-08-12T18:48:41Z2016-08-12T18:48:41Z2015-02-26info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesis83 f.application/pdfBOSIO, Fabio. Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado. 2015. 83 f. Tese (doutorado) - Universidade Estadual Paulista Julio de Mesquita Filho, Instituto de Biociências de Botucatu, 2015.http://hdl.handle.net/11449/142970000865641000865641.pdf33004064025P2Alephreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporinfo:eu-repo/semantics/openAccess2023-11-03T06:12:29Zoai:repositorio.unesp.br:11449/142970Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:50:31.082917Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado
Cambial activity and the girdling effect in the sconary xylem en cerrado species
title Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado
spellingShingle Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado
Bosio, Fabio [UNESP]
Xilema
Floema
Sistema vascular de plantas
Plantas - Efeito da auxina
Plantas dos cerrados
Cerrado plants
Xylem
title_short Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado
title_full Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado
title_fullStr Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado
title_full_unstemmed Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado
title_sort Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado
author Bosio, Fabio [UNESP]
author_facet Bosio, Fabio [UNESP]
author_role author
dc.contributor.none.fl_str_mv Marcati, Carmen Regina [UNESP]
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Bosio, Fabio [UNESP]
dc.subject.por.fl_str_mv Xilema
Floema
Sistema vascular de plantas
Plantas - Efeito da auxina
Plantas dos cerrados
Cerrado plants
Xylem
topic Xilema
Floema
Sistema vascular de plantas
Plantas - Efeito da auxina
Plantas dos cerrados
Cerrado plants
Xylem
description This study approached the seasonality in cambial activity and vegetative phenology, the relationship between these events and their relation with wheater and environmental factors, and also the effects of stem girdling in the structure of secondary xylem in Cerrado species. In order to study of seasonality in cambial activity, monthly samples from main stem of Kielmeyera grandiflora (Wawra) Saddi (Calophyllaceae) were collected from September 2011 to December 2012. In the same period, observations of vegetative phenological phases were made to assess the seasonality in leaf production, and to compare these data with cambial activity. In order to certify which environmental and weather features are related with bud opening and onset of cambial activity, it was calculated the mean value of temperature and photoperiod, and obtained the sum of rainfall in a time scale that ranged from 1 to 30 days before bud opening and the onset of cambial activity. After that, the coefficient of variation was calculated to assess the variability between years. In order to evaluate the stem girdling effect in the structure of secondary xylem was conducted an experiment in field with the species Aegiphila verticillataVell (Lamiaceae), composed of two groups, girdling and control. In girdling group, bark and cambium were completely removed from the central portion of main stem, forming a complete ring. The purpose of girdling was to interrupt the polar flow of auxin produced in the crown, and to assess the effect of its disruption in the structure of secondary xylem. In control group, it has not made a girdling in the stem. To distinguish the xylem formed before girdling from xylem formed after the treatment, an incision (03 cm in length) was made in the regions above and below girdling until reaches the vascular cambium. In the same way, in control group an incision in the bark was made at a central point of the ...
publishDate 2015
dc.date.none.fl_str_mv 2015-02-26
2016-08-12T18:48:41Z
2016-08-12T18:48:41Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv BOSIO, Fabio. Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado. 2015. 83 f. Tese (doutorado) - Universidade Estadual Paulista Julio de Mesquita Filho, Instituto de Biociências de Botucatu, 2015.
http://hdl.handle.net/11449/142970
000865641
000865641.pdf
33004064025P2
identifier_str_mv BOSIO, Fabio. Atividade cambial e o efeito de anelamento no xilema secundário em espécies de cerrado. 2015. 83 f. Tese (doutorado) - Universidade Estadual Paulista Julio de Mesquita Filho, Instituto de Biociências de Botucatu, 2015.
000865641
000865641.pdf
33004064025P2
url http://hdl.handle.net/11449/142970
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 83 f.
application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual Paulista (Unesp)
publisher.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.source.none.fl_str_mv Aleph
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128708886659072