Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds

Detalhes bibliográficos
Autor(a) principal: Zuffo, Alan Mario
Data de Publicação: 2020
Outros Autores: Aguilera, Jorge González, Carvalho, Everson Reis, Teodoro, Paulo Eduardo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/42848
Resumo: This study aimed to evaluate the effect of chemical desiccants and harvest times on the enzymatic expression and physiological quality of soybean seeds. The experiment was carried out in a randomized block design with four replications, in a factorial scheme (4 × 3 + 1) with four desiccants (paraquat - 2 L ha-1 , ammonium glufosinate - 2 L ha-1 , diquat - 1.5 L ha-1 , and saflufenacil - 40 g ha-1 ). These were applied at the phenological stage R7.1 (beginning of leaf yellowing) and at three harvest times (0, 14, and 28 days after the phenological stage R8). There was also a control treatment (no desiccant, harvested at R8). The physiological quality of soybean seeds and the enzymatic expressions of malate dehydrogenase, alcohol dehydrogenase, esterase, isocitrate lyase, and superoxide dismutase were evaluated in laboratory tests. Seeds harvested at the R8 + 14 stage led to the highest losses in seed quality. However, the 50 mm rainfall also affected seed deterioration. The desiccants diquat and paraquat provided the lowest and the highest damage to the seed physiological quality, respectively. The expression of the enzymes alcohol dehydrogenase, esterase, and isocitrate lyase were efficient and had an adequate correlation with the physiological quality. Malate dehydrogenase and superoxide dismutase had no satisfactory relation with the physiological tests performed with soybean seeds.
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spelling Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seedsEpócas de colheita com dessecação química e suas relações com a qualidade fisiológica e expressão enzimática em sementes de sojaAntioxidantsGlycine max.Physiological maturationRespiration processesAntioxidantesMaturidade fisiológicaProcessos de respiraçãoThis study aimed to evaluate the effect of chemical desiccants and harvest times on the enzymatic expression and physiological quality of soybean seeds. The experiment was carried out in a randomized block design with four replications, in a factorial scheme (4 × 3 + 1) with four desiccants (paraquat - 2 L ha-1 , ammonium glufosinate - 2 L ha-1 , diquat - 1.5 L ha-1 , and saflufenacil - 40 g ha-1 ). These were applied at the phenological stage R7.1 (beginning of leaf yellowing) and at three harvest times (0, 14, and 28 days after the phenological stage R8). There was also a control treatment (no desiccant, harvested at R8). The physiological quality of soybean seeds and the enzymatic expressions of malate dehydrogenase, alcohol dehydrogenase, esterase, isocitrate lyase, and superoxide dismutase were evaluated in laboratory tests. Seeds harvested at the R8 + 14 stage led to the highest losses in seed quality. However, the 50 mm rainfall also affected seed deterioration. The desiccants diquat and paraquat provided the lowest and the highest damage to the seed physiological quality, respectively. The expression of the enzymes alcohol dehydrogenase, esterase, and isocitrate lyase were efficient and had an adequate correlation with the physiological quality. Malate dehydrogenase and superoxide dismutase had no satisfactory relation with the physiological tests performed with soybean seeds.- O objetivo no trabalho foi avaliar o efeito de dessecantes químicos e épocas de colheita sobre a qualidade fisiológica e expressão enzimática em sementes de soja. O delineamento experimental foi blocos casualizados, com quatro repetições, em esquema fatorial (4 × 3 + 1): quatro dessecantes (paraquat - 2 L ha-1 , glufosinato de amônio – 2 L ha-1 , diquat – 1,5 L ha-1 , saflufenacil 40 g ha-1 ) aplicado no estádio fenológico R7.1 (início do amarelecimento das folhas), com três épocas de colheita (0; 14 e 28 dias após o estádio fenológico R8) mais o controle (ausência de dessecante e colhida em R8). Foi avaliada a qualidade fisiológica das sementes de soja por meio de testes em laboratório e a expressão enzimática das enzimas malato desidrogenase, álcool desidrogenase, esterase, isocitrato liase e para a superóxido dismutase. A colheita de sementes no estádio R8+14 promove as maiores perdas na qualidade das sementes, todavia, não só tempo de atraso afeta, mas a ocorrência de precipitações é decisiva, sendo que chuva de 50 mm, já proporciona deterioração das sementes de soja. Os dessecantes diquat e paraquat foram os que promoveram os menores e maiores danos à qualidade fisiológica das sementes, respectivamente. A expressão das enzimas álcool desidrogenase, esterase e isocitrato liase são eficientes no monitoramento e com adequada correlação com a qualidade fisiológica. A malato desidrogenase e superóxido dismutase apresentam baixa correlação com os testes fisiológicos realizados nas sementes de soja.Universidade Federal Rural do Semi-Árido2020-09-04T14:06:36Z2020-09-04T14:06:36Z2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfZUFFO, A. M. et al. Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds. Revista Caatinga, Mossoró, v. 33, n. 2, p. 361-370, Apr./June 2020.http://repositorio.ufla.br/jspui/handle/1/42848Revista Caatingareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessZuffo, Alan MarioAguilera, Jorge GonzálezCarvalho, Everson ReisTeodoro, Paulo Eduardoeng2023-05-26T18:50:47Zoai:localhost:1/42848Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-26T18:50:47Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds
Epócas de colheita com dessecação química e suas relações com a qualidade fisiológica e expressão enzimática em sementes de soja
title Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds
spellingShingle Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds
Zuffo, Alan Mario
Antioxidants
Glycine max.
Physiological maturation
Respiration processes
Antioxidantes
Maturidade fisiológica
Processos de respiração
title_short Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds
title_full Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds
title_fullStr Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds
title_full_unstemmed Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds
title_sort Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds
author Zuffo, Alan Mario
author_facet Zuffo, Alan Mario
Aguilera, Jorge González
Carvalho, Everson Reis
Teodoro, Paulo Eduardo
author_role author
author2 Aguilera, Jorge González
Carvalho, Everson Reis
Teodoro, Paulo Eduardo
author2_role author
author
author
dc.contributor.author.fl_str_mv Zuffo, Alan Mario
Aguilera, Jorge González
Carvalho, Everson Reis
Teodoro, Paulo Eduardo
dc.subject.por.fl_str_mv Antioxidants
Glycine max.
Physiological maturation
Respiration processes
Antioxidantes
Maturidade fisiológica
Processos de respiração
topic Antioxidants
Glycine max.
Physiological maturation
Respiration processes
Antioxidantes
Maturidade fisiológica
Processos de respiração
description This study aimed to evaluate the effect of chemical desiccants and harvest times on the enzymatic expression and physiological quality of soybean seeds. The experiment was carried out in a randomized block design with four replications, in a factorial scheme (4 × 3 + 1) with four desiccants (paraquat - 2 L ha-1 , ammonium glufosinate - 2 L ha-1 , diquat - 1.5 L ha-1 , and saflufenacil - 40 g ha-1 ). These were applied at the phenological stage R7.1 (beginning of leaf yellowing) and at three harvest times (0, 14, and 28 days after the phenological stage R8). There was also a control treatment (no desiccant, harvested at R8). The physiological quality of soybean seeds and the enzymatic expressions of malate dehydrogenase, alcohol dehydrogenase, esterase, isocitrate lyase, and superoxide dismutase were evaluated in laboratory tests. Seeds harvested at the R8 + 14 stage led to the highest losses in seed quality. However, the 50 mm rainfall also affected seed deterioration. The desiccants diquat and paraquat provided the lowest and the highest damage to the seed physiological quality, respectively. The expression of the enzymes alcohol dehydrogenase, esterase, and isocitrate lyase were efficient and had an adequate correlation with the physiological quality. Malate dehydrogenase and superoxide dismutase had no satisfactory relation with the physiological tests performed with soybean seeds.
publishDate 2020
dc.date.none.fl_str_mv 2020-09-04T14:06:36Z
2020-09-04T14:06:36Z
2020
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv ZUFFO, A. M. et al. Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds. Revista Caatinga, Mossoró, v. 33, n. 2, p. 361-370, Apr./June 2020.
http://repositorio.ufla.br/jspui/handle/1/42848
identifier_str_mv ZUFFO, A. M. et al. Harvest times with chemical desiccation and the effects on the enzymatic expression and physiological quality of soybean seeds. Revista Caatinga, Mossoró, v. 33, n. 2, p. 361-370, Apr./June 2020.
url http://repositorio.ufla.br/jspui/handle/1/42848
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 Rural do Semi-Árido
publisher.none.fl_str_mv Universidade Federal Rural do Semi-Árido
dc.source.none.fl_str_mv Revista Caatinga
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
_version_ 1807835152092495872

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