COMPARISON OF METHODS FOR MEASURING THE WATERMELON LEAF AREA
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
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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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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1799874817774583808 |