Electrical conductivity and soybean seedling emergence

Detalhes bibliográficos
Autor(a) principal: Colete, Julio Cesar Fachini
Data de Publicação: 2004
Outros Autores: Vieira, Roberval Daiton, Dutra, Alek Sandro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: https://www.revistas.usp.br/sa/article/view/21928
Resumo: Evaluation of soybean [Glycine max (L.) Merrill] seeds vigor and its relation with field seedling emergence can provide secure indicatives of seed physiological potential. The present research studied the relationship between the electrical conductivity test and the seedling emergence of soybean in field and laboratory. The field experiment was sown in November 26th, December 3td and 10th, 2000. Laboratory tests were performed using levels of water potential in the substrate (soil) -0.03; -0.2; -0.4; and -0.6 MPa. Fourteen seed lots, seven of 'Embrapa 48' and seven of 'BRS 133' soybean cultivars were used. Laboratory tests comprised seed water content determination, before and after the accelerated aging; germination and vigor tests (accelerated aging and electrical conductivity). Germination and seedling emergence decreased as the substrate water potential was reduced, indicating a relationship among the germination, water potential and seed vigor. For the 'Embrapa 48' higher vigor seed lots, the best performance occurred at -0.6 MPa water potential. The electrical conductivity test may be efficient to evaluate soybean seed vigor and, consequently, the performance potential in the field. However, further studies are necessary to determine the values or the range of values that indicate the seed vigor level and the adequate use of a given seed lot.
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spelling Electrical conductivity and soybean seedling emergence Condutividade elétrica e a emergência de plântulas de soja Glycine maxseed analysiswater contentvigorwater potentialsementesanálisevigorteor de águapotencial hídrico Evaluation of soybean [Glycine max (L.) Merrill] seeds vigor and its relation with field seedling emergence can provide secure indicatives of seed physiological potential. The present research studied the relationship between the electrical conductivity test and the seedling emergence of soybean in field and laboratory. The field experiment was sown in November 26th, December 3td and 10th, 2000. Laboratory tests were performed using levels of water potential in the substrate (soil) -0.03; -0.2; -0.4; and -0.6 MPa. Fourteen seed lots, seven of 'Embrapa 48' and seven of 'BRS 133' soybean cultivars were used. Laboratory tests comprised seed water content determination, before and after the accelerated aging; germination and vigor tests (accelerated aging and electrical conductivity). Germination and seedling emergence decreased as the substrate water potential was reduced, indicating a relationship among the germination, water potential and seed vigor. For the 'Embrapa 48' higher vigor seed lots, the best performance occurred at -0.6 MPa water potential. The electrical conductivity test may be efficient to evaluate soybean seed vigor and, consequently, the performance potential in the field. However, further studies are necessary to determine the values or the range of values that indicate the seed vigor level and the adequate use of a given seed lot. A avaliação do vigor e sua relação com a emergência de plântulas em campo é fundamental para a estimativa correta do potencial fisiológico de sementes de soja [Glycine max (L.) Merrill]. O presente trabalho objetivou verificar a relação entre os resultados do teste de condutividade elétrica (CE) e os da emergência de plântulas de soja em campo e em laboratório. Foram estudados níveis de disponibilidade de água no substrato -0,03; -0,2; -0,4; e -0,6 MPa. Foram avaliados 14 lotes de sementes das cultivares Embrapa 48 e BRS 133. O experimento em campo foi conduzido em três épocas de semeadura (26/11 e 3 e 10/12/2000); em laboratório, foram determinados o teor de água, antes e após o envelhecimento acelerado (EA) das sementes, a germinação e o vigor (testes de EA e de CE). A redução progressiva da quantidade de água no substrato provocou diminuição das porcentagens de germinação e de emergência de plântulas em laboratório, de modo que o desempenho germinativo das sementes dependeu dos níveis de estresse hídrico e do vigor da semente. Para lotes de maior vigor da cultivar Embrapa 48, o melhor desempenho ocorreu sob o potencial hídrico de -0,6 MPa. CE pode ser um eficiente procedimento para a avaliação do potencial fisiológico e desempenho de lotes de sementes de soja, necessitando, porém, que estudos adicionais sejam conduzidos para o estabelecimento de valores ou limites de valores para caracterizar o nível de vigor das sementes (alto, médio ou baixo) permitindo direcionar de maneira consistente o uso dos lotes de sementes. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2004-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/2192810.1590/S0103-90162004000400006Scientia Agricola; v. 61 n. 4 (2004); 386-391Scientia Agricola; Vol. 61 No. 4 (2004); 386-391Scientia Agricola; Vol. 61 Núm. 4 (2004); 386-3911678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/21928/23952Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessColete, Julio Cesar FachiniVieira, Roberval DaitonDutra, Alek Sandro2015-07-07T16:44:34Zoai:revistas.usp.br:article/21928Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2015-07-07T16:44:34Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Electrical conductivity and soybean seedling emergence
Condutividade elétrica e a emergência de plântulas de soja
title Electrical conductivity and soybean seedling emergence
spellingShingle Electrical conductivity and soybean seedling emergence
Colete, Julio Cesar Fachini
Glycine max
seed analysis
water content
vigor
water potential
sementes
análise
vigor
teor de água
potencial hídrico
title_short Electrical conductivity and soybean seedling emergence
title_full Electrical conductivity and soybean seedling emergence
title_fullStr Electrical conductivity and soybean seedling emergence
title_full_unstemmed Electrical conductivity and soybean seedling emergence
title_sort Electrical conductivity and soybean seedling emergence
author Colete, Julio Cesar Fachini
author_facet Colete, Julio Cesar Fachini
Vieira, Roberval Daiton
Dutra, Alek Sandro
author_role author
author2 Vieira, Roberval Daiton
Dutra, Alek Sandro
author2_role author
author
dc.contributor.author.fl_str_mv Colete, Julio Cesar Fachini
Vieira, Roberval Daiton
Dutra, Alek Sandro
dc.subject.por.fl_str_mv Glycine max
seed analysis
water content
vigor
water potential
sementes
análise
vigor
teor de água
potencial hídrico
topic Glycine max
seed analysis
water content
vigor
water potential
sementes
análise
vigor
teor de água
potencial hídrico
description Evaluation of soybean [Glycine max (L.) Merrill] seeds vigor and its relation with field seedling emergence can provide secure indicatives of seed physiological potential. The present research studied the relationship between the electrical conductivity test and the seedling emergence of soybean in field and laboratory. The field experiment was sown in November 26th, December 3td and 10th, 2000. Laboratory tests were performed using levels of water potential in the substrate (soil) -0.03; -0.2; -0.4; and -0.6 MPa. Fourteen seed lots, seven of 'Embrapa 48' and seven of 'BRS 133' soybean cultivars were used. Laboratory tests comprised seed water content determination, before and after the accelerated aging; germination and vigor tests (accelerated aging and electrical conductivity). Germination and seedling emergence decreased as the substrate water potential was reduced, indicating a relationship among the germination, water potential and seed vigor. For the 'Embrapa 48' higher vigor seed lots, the best performance occurred at -0.6 MPa water potential. The electrical conductivity test may be efficient to evaluate soybean seed vigor and, consequently, the performance potential in the field. However, further studies are necessary to determine the values or the range of values that indicate the seed vigor level and the adequate use of a given seed lot.
publishDate 2004
dc.date.none.fl_str_mv 2004-01-01
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 https://www.revistas.usp.br/sa/article/view/21928
10.1590/S0103-90162004000400006
url https://www.revistas.usp.br/sa/article/view/21928
identifier_str_mv 10.1590/S0103-90162004000400006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/sa/article/view/21928/23952
dc.rights.driver.fl_str_mv Copyright (c) 2015 Scientia Agricola
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2015 Scientia Agricola
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
dc.source.none.fl_str_mv Scientia Agricola; v. 61 n. 4 (2004); 386-391
Scientia Agricola; Vol. 61 No. 4 (2004); 386-391
Scientia Agricola; Vol. 61 Núm. 4 (2004); 386-391
1678-992X
0103-9016
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
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