COMPARISON OF METHODS FOR ESTIMATING PLASTOCHRON IN COTTON PLANT UNDER TROPICAL WEATHER CONDITIONS

Detalhes bibliográficos
Autor(a) principal: Pereira, Luiz Carlos
Data de Publicação: 2010
Outros Autores: Campelo Júnior, José Holanda, Ferronato, Alessandro
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Tropical (Online)
Texto Completo: https://revistas.ufg.br/pat/article/view/6716
Resumo: The time for growth and development of plants is influenced by air temperature and other environmental variables. This research was based on three methods for calculating plastochron timing of cotton plant under tropical weather conditions, using thermal units accumulation as variable, calculated from the average daily air temperature, considering the concepts of degrees-day and accumulated thermal time. Two methods for calculating average daily temperature and three methods for obtaining Degrees-Day values and accumulated thermal time were used. Whereas the accumulated thermal time is a method that considers that the growth and development of plants have linear response to the air temperature influence, it was also tested a non-linear approach, as described by Wang & Engel (1998), called, in this study, beta function. For the beta function, average daytime temperatures were also used, obtained by the two different calculation methods. The beta function was the best option for estimating plastochron and the method for calculating the Average Daily Temperature influenced the results. KEY-WORDS: Gossypium hirsutum; degrees-day; beta function; physiological age; thermal units.
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spelling COMPARISON OF METHODS FOR ESTIMATING PLASTOCHRON IN COTTON PLANT UNDER TROPICAL WEATHER CONDITIONSCOMPARAÇÃO DE MÉTODOS PARA ESTIMATIVA DO PLASTOCRONO EM ALGODOEIRO EM CONDIÇÕES TROPICAISGossypium hirsutumdegrees-daybeta functionphysiological agethermal unitsGossypium hirsutumgraus-diafunção betaidade fisiológicaunidades térmicas The time for growth and development of plants is influenced by air temperature and other environmental variables. This research was based on three methods for calculating plastochron timing of cotton plant under tropical weather conditions, using thermal units accumulation as variable, calculated from the average daily air temperature, considering the concepts of degrees-day and accumulated thermal time. Two methods for calculating average daily temperature and three methods for obtaining Degrees-Day values and accumulated thermal time were used. Whereas the accumulated thermal time is a method that considers that the growth and development of plants have linear response to the air temperature influence, it was also tested a non-linear approach, as described by Wang & Engel (1998), called, in this study, beta function. For the beta function, average daytime temperatures were also used, obtained by the two different calculation methods. The beta function was the best option for estimating plastochron and the method for calculating the Average Daily Temperature influenced the results. KEY-WORDS: Gossypium hirsutum; degrees-day; beta function; physiological age; thermal units. O tempo de crescimento e desenvolvimento de plantas é influenciado pela temperatura média do ar, entre outras variáveis ambientais. Neste trabalho, foram utilizados três métodos de cálculo para contagem do tempo do plastocrono em algodoeiro, em condições de clima tropical, utilizando-se, como variável, o acúmulo de unidades térmicas, calculadas a partir da temperatura média diária do ar, considerando-se os conceitos de graus-dia e soma térmica acumulada. Foram utilizados dois métodos de cálculo da Temperatura Média Diária e três métodos de obtenção dos valores de Graus-Dia e Soma Térmica Acumulada. Considerando-se que a Soma Térmica Acumulada é um método que considera que o crescimento e desenvolvimento das plantas apresentam resposta linear à influência da temperatura do ar, foi testada, também, uma abordagem não-linear, descrita por Wang & Engel (1998), utilizada, neste trabalho, com a denominação de Função beta. Na Função beta, também foram utilizadas as Temperaturas Médias Diárias obtidas pelos dois diferentes métodos de cálculo. Os resultados obtidos permitiram considerar que a Função beta foi melhor na estimativa do plastocrono e que o método de cálculo da Temperatura Média Diária influenciou os resultados obtidos. PALAVRAS-CHAVE: Gossypium hirsutum; graus-dia; função beta; idade fisiológica; unidades térmicas.Escola de Agronomia - Universidade Federal de Goiás2010-07-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa experimentalapplication/pdfhttps://revistas.ufg.br/pat/article/view/6716Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 40, n. 2, Apr./Jun. 2010; 213-220Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 40, n. 2, abr./jun. 2010; 213-220Pesquisa Agropecuária Tropical; v. 40, n. 2, abr./jun. 2010; 213-2201983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/pat/article/view/6716/6903Copyright (c) 2020 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessPereira, Luiz CarlosCampelo Júnior, José HolandaFerronato, Alessandro2020-07-09T17:31:16Zoai:ojs.revistas.ufg.br:article/6716Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:55:44.653414Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv COMPARISON OF METHODS FOR ESTIMATING PLASTOCHRON IN COTTON PLANT UNDER TROPICAL WEATHER CONDITIONS
COMPARAÇÃO DE MÉTODOS PARA ESTIMATIVA DO PLASTOCRONO EM ALGODOEIRO EM CONDIÇÕES TROPICAIS
title COMPARISON OF METHODS FOR ESTIMATING PLASTOCHRON IN COTTON PLANT UNDER TROPICAL WEATHER CONDITIONS
spellingShingle COMPARISON OF METHODS FOR ESTIMATING PLASTOCHRON IN COTTON PLANT UNDER TROPICAL WEATHER CONDITIONS
Pereira, Luiz Carlos
Gossypium hirsutum
degrees-day
beta function
physiological age
thermal units
Gossypium hirsutum
graus-dia
função beta
idade fisiológica
unidades térmicas
title_short COMPARISON OF METHODS FOR ESTIMATING PLASTOCHRON IN COTTON PLANT UNDER TROPICAL WEATHER CONDITIONS
title_full COMPARISON OF METHODS FOR ESTIMATING PLASTOCHRON IN COTTON PLANT UNDER TROPICAL WEATHER CONDITIONS
title_fullStr COMPARISON OF METHODS FOR ESTIMATING PLASTOCHRON IN COTTON PLANT UNDER TROPICAL WEATHER CONDITIONS
title_full_unstemmed COMPARISON OF METHODS FOR ESTIMATING PLASTOCHRON IN COTTON PLANT UNDER TROPICAL WEATHER CONDITIONS
title_sort COMPARISON OF METHODS FOR ESTIMATING PLASTOCHRON IN COTTON PLANT UNDER TROPICAL WEATHER CONDITIONS
author Pereira, Luiz Carlos
author_facet Pereira, Luiz Carlos
Campelo Júnior, José Holanda
Ferronato, Alessandro
author_role author
author2 Campelo Júnior, José Holanda
Ferronato, Alessandro
author2_role author
author
dc.contributor.author.fl_str_mv Pereira, Luiz Carlos
Campelo Júnior, José Holanda
Ferronato, Alessandro
dc.subject.por.fl_str_mv Gossypium hirsutum
degrees-day
beta function
physiological age
thermal units
Gossypium hirsutum
graus-dia
função beta
idade fisiológica
unidades térmicas
topic Gossypium hirsutum
degrees-day
beta function
physiological age
thermal units
Gossypium hirsutum
graus-dia
função beta
idade fisiológica
unidades térmicas
description The time for growth and development of plants is influenced by air temperature and other environmental variables. This research was based on three methods for calculating plastochron timing of cotton plant under tropical weather conditions, using thermal units accumulation as variable, calculated from the average daily air temperature, considering the concepts of degrees-day and accumulated thermal time. Two methods for calculating average daily temperature and three methods for obtaining Degrees-Day values and accumulated thermal time were used. Whereas the accumulated thermal time is a method that considers that the growth and development of plants have linear response to the air temperature influence, it was also tested a non-linear approach, as described by Wang & Engel (1998), called, in this study, beta function. For the beta function, average daytime temperatures were also used, obtained by the two different calculation methods. The beta function was the best option for estimating plastochron and the method for calculating the Average Daily Temperature influenced the results. KEY-WORDS: Gossypium hirsutum; degrees-day; beta function; physiological age; thermal units.
publishDate 2010
dc.date.none.fl_str_mv 2010-07-09
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Pesquisa experimental
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/pat/article/view/6716
url https://revistas.ufg.br/pat/article/view/6716
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://revistas.ufg.br/pat/article/view/6716/6903
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. 40, n. 2, Apr./Jun. 2010; 213-220
Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 40, n. 2, abr./jun. 2010; 213-220
Pesquisa Agropecuária Tropical; v. 40, n. 2, abr./jun. 2010; 213-220
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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