Correlations between growth variables and the Dickson quality index in forest seedlings

Detalhes bibliográficos
Autor(a) principal: Binotto, Alexandre Francisco
Data de Publicação: 2015
Outros Autores: Lúcio, Alessandro Dal’ Col, Lopes, Sidinei José
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/14913
Resumo: This study aims to identify correlations between growth variables and the Dickson quality index in seedlings of Eucalyptus grandis and Pinus elliottii var. elliottii. The experiment was conducted in a greenhouse and the following variables were observed: stem base diameter, shoot height, number of leaves, leaf dry matter, stem base dry matter, root dry matter, shoot dry matter, total dry matter, ratio of shoot dry matter to root dry matter and ratio of shoot height to stem base diameter in E. grandis 60, 75, 90, 105 and 120 days after seedling emergence, and in P. elliottii 25, 50, 75, 100, 125, 150 and 175 days after seedling emergence. Using Pearson correlation and also path and regression analyses, correlations were analyzed between observed variables according to day after emergence and the Dickson quality index. Stem base diameter was found to have stronger correlation with days after emergence in comparison to shoot height, in both species. Root dry matter was found to have stronger correlation with the Dickson quality index. Stem base diameter was the most suitable parameter to indicate seedling quality due to its higher correlation level with the Dickson quality index. Shoot height was only effective to indicate seedling quality if analyzed together with stem base diameter. Variables relating to dry matter showed the highest correlations with the Dickson quality index (DQI), followed by stem base diameter. Conversely, number of leaves showed the poorest correlations with DQI, followed by seedling height.
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spelling Correlations between growth variables and the Dickson quality index in forest seedlingsRelações entre variáveis de crescimento e o índice de qualidade de Dickson em mudas florestaisEucalyptus grandisPinus elliottiiPath analysisRegression analysisLinear correlationAnálise de trilhaRegressãoCorrelação linearThis study aims to identify correlations between growth variables and the Dickson quality index in seedlings of Eucalyptus grandis and Pinus elliottii var. elliottii. The experiment was conducted in a greenhouse and the following variables were observed: stem base diameter, shoot height, number of leaves, leaf dry matter, stem base dry matter, root dry matter, shoot dry matter, total dry matter, ratio of shoot dry matter to root dry matter and ratio of shoot height to stem base diameter in E. grandis 60, 75, 90, 105 and 120 days after seedling emergence, and in P. elliottii 25, 50, 75, 100, 125, 150 and 175 days after seedling emergence. Using Pearson correlation and also path and regression analyses, correlations were analyzed between observed variables according to day after emergence and the Dickson quality index. Stem base diameter was found to have stronger correlation with days after emergence in comparison to shoot height, in both species. Root dry matter was found to have stronger correlation with the Dickson quality index. Stem base diameter was the most suitable parameter to indicate seedling quality due to its higher correlation level with the Dickson quality index. Shoot height was only effective to indicate seedling quality if analyzed together with stem base diameter. Variables relating to dry matter showed the highest correlations with the Dickson quality index (DQI), followed by stem base diameter. Conversely, number of leaves showed the poorest correlations with DQI, followed by seedling height.Neste estudo, objetivou-se identificar a relação entre variáveis de crescimento e o Índice de Qualidade de Dickson, em mudas de Eucalyptus grandis e Pinus elliottii var. elliottii. O trabalho foi realizado em casa de vegetação, com as observações das variáveis diâmtero de colo, altura da parte aérea, número de folhas, fitomassas secas de folhas, do colo, do sistema radicular, da parte aérea e total, as relações da fitomassa seca da parte aérea/ fitomassa seca do sistema radicular e da altura da parte aérea/diâmetro de colo em E. grandis aos 60, 75, 90, 105 e 120 dias e em P. elliottii aos 25, 50, 75, 100, 125, 150 e 175 dias após emergência das mudas. Pela correlação de Pearson, análises de trilha e de regressão, avaliaram-se as relações entre as variáveis observadas com os dias após a emergência e o índice de qualidade de Dickson. O diâmetro de colo apresentou maior relação com os dias após emergência, quando comparado com a altura da parte aérea, para ambas as espécies estudadas. A fitomassa seca de raiz esteve mais correlacionada com o índice de qualidade de Dickson. O diâmetro de colo foi mais propício para indicar qualidade de muda, em razão do seu maior grau de relação com índice de qualidade de Dickson. A variável altura da parte aérea só se apresentou eficiente para indicar qualidade de mudas, quando analisada juntamente com o diâmetro de colo. As fitomassas secas são as variáveis com maiores relações com o Índice de Qualidade de Dickson (IQD), seguidas do diâmetro de colo. Já, o número de folhas, seguido da altura da muda, são as com menores relações com o IQD.Universidade Federal de Lavras (UFLA)2015-05-132017-08-01T20:19:33Z2017-08-01T20:19:33Z2017-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfBINOTTO, A. F.; LÚCIO, A. D.; LOPES, S. J. Correlations between growth variables and the Dickson quality index in forest seedlings. CERNE, Lavras, v. 16, n. 4, p. 457-464, out./dez. 2010.http://repositorio.ufla.br/jspui/handle/1/149132317-63420104-7760reponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAengAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessBinotto, Alexandre FranciscoLúcio, Alessandro Dal’ ColLopes, Sidinei José2021-01-23T22:26:57Zoai:localhost:1/14913Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2021-01-23T22:26:57Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Correlations between growth variables and the Dickson quality index in forest seedlings
Relações entre variáveis de crescimento e o índice de qualidade de Dickson em mudas florestais
title Correlations between growth variables and the Dickson quality index in forest seedlings
spellingShingle Correlations between growth variables and the Dickson quality index in forest seedlings
Binotto, Alexandre Francisco
Eucalyptus grandis
Pinus elliottii
Path analysis
Regression analysis
Linear correlation
Análise de trilha
Regressão
Correlação linear
title_short Correlations between growth variables and the Dickson quality index in forest seedlings
title_full Correlations between growth variables and the Dickson quality index in forest seedlings
title_fullStr Correlations between growth variables and the Dickson quality index in forest seedlings
title_full_unstemmed Correlations between growth variables and the Dickson quality index in forest seedlings
title_sort Correlations between growth variables and the Dickson quality index in forest seedlings
author Binotto, Alexandre Francisco
author_facet Binotto, Alexandre Francisco
Lúcio, Alessandro Dal’ Col
Lopes, Sidinei José
author_role author
author2 Lúcio, Alessandro Dal’ Col
Lopes, Sidinei José
author2_role author
author
dc.contributor.author.fl_str_mv Binotto, Alexandre Francisco
Lúcio, Alessandro Dal’ Col
Lopes, Sidinei José
dc.subject.por.fl_str_mv Eucalyptus grandis
Pinus elliottii
Path analysis
Regression analysis
Linear correlation
Análise de trilha
Regressão
Correlação linear
topic Eucalyptus grandis
Pinus elliottii
Path analysis
Regression analysis
Linear correlation
Análise de trilha
Regressão
Correlação linear
description This study aims to identify correlations between growth variables and the Dickson quality index in seedlings of Eucalyptus grandis and Pinus elliottii var. elliottii. The experiment was conducted in a greenhouse and the following variables were observed: stem base diameter, shoot height, number of leaves, leaf dry matter, stem base dry matter, root dry matter, shoot dry matter, total dry matter, ratio of shoot dry matter to root dry matter and ratio of shoot height to stem base diameter in E. grandis 60, 75, 90, 105 and 120 days after seedling emergence, and in P. elliottii 25, 50, 75, 100, 125, 150 and 175 days after seedling emergence. Using Pearson correlation and also path and regression analyses, correlations were analyzed between observed variables according to day after emergence and the Dickson quality index. Stem base diameter was found to have stronger correlation with days after emergence in comparison to shoot height, in both species. Root dry matter was found to have stronger correlation with the Dickson quality index. Stem base diameter was the most suitable parameter to indicate seedling quality due to its higher correlation level with the Dickson quality index. Shoot height was only effective to indicate seedling quality if analyzed together with stem base diameter. Variables relating to dry matter showed the highest correlations with the Dickson quality index (DQI), followed by stem base diameter. Conversely, number of leaves showed the poorest correlations with DQI, followed by seedling height.
publishDate 2015
dc.date.none.fl_str_mv 2015-05-13
2017-08-01T20:19:33Z
2017-08-01T20:19:33Z
2017-08-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv BINOTTO, A. F.; LÚCIO, A. D.; LOPES, S. J. Correlations between growth variables and the Dickson quality index in forest seedlings. CERNE, Lavras, v. 16, n. 4, p. 457-464, out./dez. 2010.
http://repositorio.ufla.br/jspui/handle/1/14913
identifier_str_mv BINOTTO, A. F.; LÚCIO, A. D.; LOPES, S. J. Correlations between growth variables and the Dickson quality index in forest seedlings. CERNE, Lavras, v. 16, n. 4, p. 457-464, out./dez. 2010.
url http://repositorio.ufla.br/jspui/handle/1/14913
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Lavras (UFLA)
publisher.none.fl_str_mv Universidade Federal de Lavras (UFLA)
dc.source.none.fl_str_mv 2317-6342
0104-7760
reponame:Repositório Institucional da UFLA
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv nivaldo@ufla.br || repositorio.biblioteca@ufla.br
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