COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREA

Detalhes bibliográficos
Autor(a) principal: Souza, Marcelo Sobreira de
Data de Publicação: 2012
Outros Autores: Alves, Samara Sibelle Vieira, Dombroski, Jeferson Luiz Dollabona, Freitas, José Djalma Batista de, Aroucha, Edna Maria Mendes
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Tropical (Online)
Texto Completo: https://revistas.ufg.br/pat/article/view/15764
Resumo: The leaf area determination is very important in agronomic and physiologic studies, for supplying information on vegetal metabolism, and the techniques used should be simple, fast and accurate. This study aimed to compare different methods for measuring leaf area in the watermelon crop. For that, the accuracy of four measuring methods was evaluated (experiment 1) and leaf area was compared by using the integration method provided by the LI-COR® model LI 3100 equipment, at 0, 30, 60, 90, and 120 minutes, after being determined with the aid of a scanner (experiment 2). For the experiment 1, a completely randomized design, with four treatments and 19 replications, was used. The treatments were equivalent to the Leaf area integrator AM 300, Leaf area integrator LI-COR® model LI 3100, Leaf discs, and Digital image analysis (scanner) methods, and were compared to the reference method (scanner), in accordance with the linear correlation coefficient (r). For the experiment 2, a randomized blocks design, with six treatments and ten replications (leaves), was used, with each leaf being considered a block and their average compared by using the Tukey test at 5%. Differences were observed for leaf area estimation according to the method employed. The leaf discs method was considered the most accurate one, for the watermelon crop, and the LI-COR® model 3100 is not recommended for this crop, particularly when readings are made at longer intervals.
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spelling COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREACOMPARAÇÃO DE MÉTODOS DE MENSURAÇÃO DE ÁREA FOLIAR PARA A CULTURA DA MELANCIACitrullus lanatus (Thunb.) Matsum & Nakaidestructive and nondestructive methodsdigital image.Citrullus lanatus (Thunb.) Matsum & Nakaimétodos destrutivos e não destrutivosimagem digital.The leaf area determination is very important in agronomic and physiologic studies, for supplying information on vegetal metabolism, and the techniques used should be simple, fast and accurate. This study aimed to compare different methods for measuring leaf area in the watermelon crop. For that, the accuracy of four measuring methods was evaluated (experiment 1) and leaf area was compared by using the integration method provided by the LI-COR® model LI 3100 equipment, at 0, 30, 60, 90, and 120 minutes, after being determined with the aid of a scanner (experiment 2). For the experiment 1, a completely randomized design, with four treatments and 19 replications, was used. The treatments were equivalent to the Leaf area integrator AM 300, Leaf area integrator LI-COR® model LI 3100, Leaf discs, and Digital image analysis (scanner) methods, and were compared to the reference method (scanner), in accordance with the linear correlation coefficient (r). For the experiment 2, a randomized blocks design, with six treatments and ten replications (leaves), was used, with each leaf being considered a block and their average compared by using the Tukey test at 5%. Differences were observed for leaf area estimation according to the method employed. The leaf discs method was considered the most accurate one, for the watermelon crop, and the LI-COR® model 3100 is not recommended for this crop, particularly when readings are made at longer intervals.A determinação da área foliar é de grande importância em estudos agronômicos e fisiológicos, por fornecer informações sobre o metabolismo vegetal, e as técnicas utilizadas devem ser simples, rápidas e precisas. O presente estudo objetivou comparar métodos de mensuração de área foliar, para a cultura da melancia. Para isto, foi avaliada a precisão de quatro métodos de mensuração (experimento 1) e comparada a área foliar, pelo método de integração obtido no equipamento LI-COR® modelo LI 3100, aos 0, 30, 60, 90 e 120 minutos, após determinada com o auxílio de um scanner (experimento 2). O delineamento utilizado no experimento 1 foi o inteiramente casualizado, com quatro tratamentos e 19 repetições. Os tratamentos corresponderam aos métodos Integrador de área foliar AM 300, Integrador de área foliar LI-COR® modelo LI 3100, Discos foliares e Análise de imagem digital (scanner), sendo, estes, comparados com o método referência (scanner), conforme o coeficiente de correlação linear (r). Para o experimento 2, o delineamento utilizado foi o de blocos casualizados com seis tratamentos e dez repetições (folhas), sendo cada folha considerada um bloco, com suas médias comparadas pelo teste Tukey, a 5%. Houve diferença na estimação da área foliar, conforme o método empregado. O método dos discos foliares foi considerado o mais preciso, para a cultura da melancia, e a utilização do LI-COR® modelo 3100 não é recomendada para esta cultura, principalmente quando as leituras são realizadas em maior intervalo de tempo.Escola de Agronomia - Universidade Federal de Goiás2012-07-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/15764Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 42, n. 2, Apr./Jun. 2012; 241-245Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 42, n. 2, abr./jun. 2012; 241-245Pesquisa Agropecuária Tropical; v. 42, n. 2, abr./jun. 2012; 241-2451983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/pat/article/view/15764/11188Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessSouza, Marcelo Sobreira deAlves, Samara Sibelle VieiraDombroski, Jeferson Luiz DollabonaFreitas, José Djalma Batista deAroucha, Edna Maria Mendes2020-07-10T11:28:25Zoai:ojs.revistas.ufg.br:article/15764Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:55:53.370236Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREA
COMPARAÇÃO DE MÉTODOS DE MENSURAÇÃO DE ÁREA FOLIAR PARA A CULTURA DA MELANCIA
title COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREA
spellingShingle COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREA
Souza, Marcelo Sobreira de
Citrullus lanatus (Thunb.) Matsum & Nakai
destructive and nondestructive methods
digital image.
Citrullus lanatus (Thunb.) Matsum & Nakai
métodos destrutivos e não destrutivos
imagem digital.
title_short COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREA
title_full COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREA
title_fullStr COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREA
title_full_unstemmed COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREA
title_sort COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREA
author Souza, Marcelo Sobreira de
author_facet Souza, Marcelo Sobreira de
Alves, Samara Sibelle Vieira
Dombroski, Jeferson Luiz Dollabona
Freitas, José Djalma Batista de
Aroucha, Edna Maria Mendes
author_role author
author2 Alves, Samara Sibelle Vieira
Dombroski, Jeferson Luiz Dollabona
Freitas, José Djalma Batista de
Aroucha, Edna Maria Mendes
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Souza, Marcelo Sobreira de
Alves, Samara Sibelle Vieira
Dombroski, Jeferson Luiz Dollabona
Freitas, José Djalma Batista de
Aroucha, Edna Maria Mendes
dc.subject.por.fl_str_mv Citrullus lanatus (Thunb.) Matsum & Nakai
destructive and nondestructive methods
digital image.
Citrullus lanatus (Thunb.) Matsum & Nakai
métodos destrutivos e não destrutivos
imagem digital.
topic Citrullus lanatus (Thunb.) Matsum & Nakai
destructive and nondestructive methods
digital image.
Citrullus lanatus (Thunb.) Matsum & Nakai
métodos destrutivos e não destrutivos
imagem digital.
description The leaf area determination is very important in agronomic and physiologic studies, for supplying information on vegetal metabolism, and the techniques used should be simple, fast and accurate. This study aimed to compare different methods for measuring leaf area in the watermelon crop. For that, the accuracy of four measuring methods was evaluated (experiment 1) and leaf area was compared by using the integration method provided by the LI-COR® model LI 3100 equipment, at 0, 30, 60, 90, and 120 minutes, after being determined with the aid of a scanner (experiment 2). For the experiment 1, a completely randomized design, with four treatments and 19 replications, was used. The treatments were equivalent to the Leaf area integrator AM 300, Leaf area integrator LI-COR® model LI 3100, Leaf discs, and Digital image analysis (scanner) methods, and were compared to the reference method (scanner), in accordance with the linear correlation coefficient (r). For the experiment 2, a randomized blocks design, with six treatments and ten replications (leaves), was used, with each leaf being considered a block and their average compared by using the Tukey test at 5%. Differences were observed for leaf area estimation according to the method employed. The leaf discs method was considered the most accurate one, for the watermelon crop, and the LI-COR® model 3100 is not recommended for this crop, particularly when readings are made at longer intervals.
publishDate 2012
dc.date.none.fl_str_mv 2012-07-02
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Avaliado por pares
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/pat/article/view/15764
url https://revistas.ufg.br/pat/article/view/15764
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufg.br/pat/article/view/15764/11188
dc.rights.driver.fl_str_mv Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
dc.source.none.fl_str_mv Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 42, n. 2, Apr./Jun. 2012; 241-245
Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 42, n. 2, abr./jun. 2012; 241-245
Pesquisa Agropecuária Tropical; v. 42, n. 2, abr./jun. 2012; 241-245
1983-4063
reponame:Pesquisa Agropecuária Tropical (Online)
instname:Universidade Federal de Goiás (UFG)
instacron:UFG
instname_str Universidade Federal de Goiás (UFG)
instacron_str UFG
institution UFG
reponame_str Pesquisa Agropecuária Tropical (Online)
collection Pesquisa Agropecuária Tropical (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)
repository.mail.fl_str_mv aseleguini.pat@gmail.com||mgoes@agro.ufg.br
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