Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlings
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.5902/1980509825604 http://hdl.handle.net/11449/194875 |
Resumo: | Forest plantations established with seedlings have heterogeneity and are difficult to manage, so an alternative is the use of clones with high productivity. In addition, clonal plants differ in the structure of the root system that can influence the water and nutrient uptake efficiency and therefore productivity. We evaluated leaf gas exchange, root hydraulic conductivity, and water use efficiency of Toona ciliata clonal cuttings and the seedlings growth. The study was performed in a completely randomized design with four treatments: a) TC3 clone; b) TC9 clone; c) TC15 clone and d) seedlings with five replicates and ten plants per plot. On the 120th day, the net photosynthetic rate, transpiration and stomatal conductance were evaluated between 12:00 and 13:00 hours and the values calculated as efficient, instantaneous (A/E) and intrinsic (A/gs) water use were calculated. Hydraulic root conductivity (k(root)) was obtained by applying increasing pressures (0.1, 0.2, 0.3, and 0.4 MPa) using Scholander chamber. The height, stem diameter, leaf area, dry mass of shoot and root, length, diameter, surface area and root volume were also determined. The data were submitted to Pearson's correlation and analysis of variance, comparing by Tukcy's test (5%). The genetic materials studied presented an equal capacity of water absorption and transport by the roots, even though they exhibited a visual anatomical differences of the root system. Although, the clones exhibited low transpiration and net photosynthetic rates, they were generally more efficient in water use, and the TC3 and TC9 clones were more efficient to convert the assimilated carbon to biomass. |
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Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlingsPhotosynthesisRoot hydraulic conductivityToona ciliataCuttingsForest plantations established with seedlings have heterogeneity and are difficult to manage, so an alternative is the use of clones with high productivity. In addition, clonal plants differ in the structure of the root system that can influence the water and nutrient uptake efficiency and therefore productivity. We evaluated leaf gas exchange, root hydraulic conductivity, and water use efficiency of Toona ciliata clonal cuttings and the seedlings growth. The study was performed in a completely randomized design with four treatments: a) TC3 clone; b) TC9 clone; c) TC15 clone and d) seedlings with five replicates and ten plants per plot. On the 120th day, the net photosynthetic rate, transpiration and stomatal conductance were evaluated between 12:00 and 13:00 hours and the values calculated as efficient, instantaneous (A/E) and intrinsic (A/gs) water use were calculated. Hydraulic root conductivity (k(root)) was obtained by applying increasing pressures (0.1, 0.2, 0.3, and 0.4 MPa) using Scholander chamber. The height, stem diameter, leaf area, dry mass of shoot and root, length, diameter, surface area and root volume were also determined. The data were submitted to Pearson's correlation and analysis of variance, comparing by Tukcy's test (5%). The genetic materials studied presented an equal capacity of water absorption and transport by the roots, even though they exhibited a visual anatomical differences of the root system. Although, the clones exhibited low transpiration and net photosynthetic rates, they were generally more efficient in water use, and the TC3 and TC9 clones were more efficient to convert the assimilated carbon to biomass.Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Estadual Norte Fluminense, Av Alberto Lamego 2000, BR-28013602 Campos Dos Goytacazes, RJ, BrazilUniv Estadual Norte Fluminense, Lab Fitotecnia, Av Alberto Lamego 2000, BR-28013602 Campos Dos Goytacazes, RJ, BrazilUniv Estadual Maranhao, Cidade Univ Paulo 4,Av Lourenco Vieira da Silva, BR-65055310 Sao Luis, MA, BrazilUniv Estadual Paulista, Agron, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, BrazilInst Sci Vigne & Vin, Bordeaux Sci Agro, Ecophysiol & Genom Fonct Vigne, UMR 1287, F-33140 Villenave Dornon, FranceUniv Estadual Norte Fluminense, Lab Fisiol Vegetal, Av Alberto Lamego 2000, BR-28013602 Campos Dos Goytacazes, RJ, BrazilUniv Estadual Paulista, Agron, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP, BrazilCentro Pesquisas Florestais, UfsmUniv Estadual Norte FluminenseUniv Estadual MaranhaoUniversidade Estadual Paulista (Unesp)Inst Sci Vigne & VinFreitas de Oliveira, Taiane Pires deBarroso, Deborah GuerraMoura de Assis Figueiredo, Fabio Afonso MazzeiBarros, Thais Chagas [UNESP]Gambetta, Gregory A.Campostrini, Eliemar2020-12-10T16:57:20Z2020-12-10T16:57:20Z2019-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article715-727application/pdfhttp://dx.doi.org/10.5902/1980509825604Ciencia Florestal. Santa Maria: Centro Pesquisas Florestais, Ufsm, v. 29, n. 2, p. 715-727, 2019.0103-9954http://hdl.handle.net/11449/19487510.5902/1980509825604S1980-50982019000200715WOS:000488284300019S1980-50982019000200715.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCiencia Florestalinfo:eu-repo/semantics/openAccess2024-01-19T06:28:24Zoai:repositorio.unesp.br:11449/194875Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-19T06:28:24Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlings |
title |
Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlings |
spellingShingle |
Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlings Freitas de Oliveira, Taiane Pires de Photosynthesis Root hydraulic conductivity Toona ciliata Cuttings |
title_short |
Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlings |
title_full |
Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlings |
title_fullStr |
Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlings |
title_full_unstemmed |
Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlings |
title_sort |
Gas exchange, root hydraulic conductivity, water use efficiency and the growth of Toona ciliata clones and seedlings |
author |
Freitas de Oliveira, Taiane Pires de |
author_facet |
Freitas de Oliveira, Taiane Pires de Barroso, Deborah Guerra Moura de Assis Figueiredo, Fabio Afonso Mazzei Barros, Thais Chagas [UNESP] Gambetta, Gregory A. Campostrini, Eliemar |
author_role |
author |
author2 |
Barroso, Deborah Guerra Moura de Assis Figueiredo, Fabio Afonso Mazzei Barros, Thais Chagas [UNESP] Gambetta, Gregory A. Campostrini, Eliemar |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Univ Estadual Norte Fluminense Univ Estadual Maranhao Universidade Estadual Paulista (Unesp) Inst Sci Vigne & Vin |
dc.contributor.author.fl_str_mv |
Freitas de Oliveira, Taiane Pires de Barroso, Deborah Guerra Moura de Assis Figueiredo, Fabio Afonso Mazzei Barros, Thais Chagas [UNESP] Gambetta, Gregory A. Campostrini, Eliemar |
dc.subject.por.fl_str_mv |
Photosynthesis Root hydraulic conductivity Toona ciliata Cuttings |
topic |
Photosynthesis Root hydraulic conductivity Toona ciliata Cuttings |
description |
Forest plantations established with seedlings have heterogeneity and are difficult to manage, so an alternative is the use of clones with high productivity. In addition, clonal plants differ in the structure of the root system that can influence the water and nutrient uptake efficiency and therefore productivity. We evaluated leaf gas exchange, root hydraulic conductivity, and water use efficiency of Toona ciliata clonal cuttings and the seedlings growth. The study was performed in a completely randomized design with four treatments: a) TC3 clone; b) TC9 clone; c) TC15 clone and d) seedlings with five replicates and ten plants per plot. On the 120th day, the net photosynthetic rate, transpiration and stomatal conductance were evaluated between 12:00 and 13:00 hours and the values calculated as efficient, instantaneous (A/E) and intrinsic (A/gs) water use were calculated. Hydraulic root conductivity (k(root)) was obtained by applying increasing pressures (0.1, 0.2, 0.3, and 0.4 MPa) using Scholander chamber. The height, stem diameter, leaf area, dry mass of shoot and root, length, diameter, surface area and root volume were also determined. The data were submitted to Pearson's correlation and analysis of variance, comparing by Tukcy's test (5%). The genetic materials studied presented an equal capacity of water absorption and transport by the roots, even though they exhibited a visual anatomical differences of the root system. Although, the clones exhibited low transpiration and net photosynthetic rates, they were generally more efficient in water use, and the TC3 and TC9 clones were more efficient to convert the assimilated carbon to biomass. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-04-01 2020-12-10T16:57:20Z 2020-12-10T16:57:20Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.5902/1980509825604 Ciencia Florestal. Santa Maria: Centro Pesquisas Florestais, Ufsm, v. 29, n. 2, p. 715-727, 2019. 0103-9954 http://hdl.handle.net/11449/194875 10.5902/1980509825604 S1980-50982019000200715 WOS:000488284300019 S1980-50982019000200715.pdf |
url |
http://dx.doi.org/10.5902/1980509825604 http://hdl.handle.net/11449/194875 |
identifier_str_mv |
Ciencia Florestal. Santa Maria: Centro Pesquisas Florestais, Ufsm, v. 29, n. 2, p. 715-727, 2019. 0103-9954 10.5902/1980509825604 S1980-50982019000200715 WOS:000488284300019 S1980-50982019000200715.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ciencia Florestal |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
715-727 application/pdf |
dc.publisher.none.fl_str_mv |
Centro Pesquisas Florestais, Ufsm |
publisher.none.fl_str_mv |
Centro Pesquisas Florestais, Ufsm |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1803047372534579200 |