Hormesis de herbicidas em soja
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/110940 |
Resumo: | The beneficial effect of low doses of toxic substances is known a long time and this phenomenon is called hormesis. In agriculture, there are many cases of herbicides that in normal rates cause severe injuries in plants, but in very low doses promote the growth of plant structures or other beneficial effect such as increase in the protein content in plants. The objective of this study was to evaluate the effect of hormesis of glyphosate, amicarbazone, mesotrione, imazapic and carfentrazone in soybean, in addition to exploring if the effect of hormesis in soybeans is affected by a pretreatment with low doses of glyphosate and later expose to the same doses or higher. For this, three separate experiments were carried out, and on the first one seven doses of glyphosate (0; 1.8; 3.6; 7.2; 36; 180 and 720 g a.e.ha-1 ) were applied to the soybean plants and evaluated the electron transport rate (ETR), the chemical compounds resulting from the action of glyphosate (shikimic acid, benzoic acid, salicylic acid, AMPA , phenylalanine, tyrosine and tryptophan) and hormesis effect on the dry weight of plants. The second experiment was made a pretreatment of soybean plants with low doses of glyphosate (0; 1.8; 3.6 and 7.2 g a.e.ha-1) in the V2 stage and 14 days later the plants received a second application of different doses of glyphosate (0; 1.8; 3.6; 7.2; 36; 180 e 720 g a.e.ha-1 ) and subsequently evaluated the dry weight of plants and shikimic acid. In the third experiment, was tested a full dose-response of the herbicides amicarbazone, mesotrione, imazapic and carfentrazone on soybean plants and evaluated the ETR and dry weight. The results indicated that at low doses glyphosate stimulated ETR and increased biomass. The compounds from shikimic acid pathway such as benzoic and salicylic acids had respective increases of 203 and 170% in the dose of 3.6 g a.e. ha-1of glyphosate and the amino ... |
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Hormesis de herbicidas em sojaSojaPlantas – Efeito dos herbicidasResistência a herbicidasPlants, Effect of herbicides onThe beneficial effect of low doses of toxic substances is known a long time and this phenomenon is called hormesis. In agriculture, there are many cases of herbicides that in normal rates cause severe injuries in plants, but in very low doses promote the growth of plant structures or other beneficial effect such as increase in the protein content in plants. The objective of this study was to evaluate the effect of hormesis of glyphosate, amicarbazone, mesotrione, imazapic and carfentrazone in soybean, in addition to exploring if the effect of hormesis in soybeans is affected by a pretreatment with low doses of glyphosate and later expose to the same doses or higher. For this, three separate experiments were carried out, and on the first one seven doses of glyphosate (0; 1.8; 3.6; 7.2; 36; 180 and 720 g a.e.ha-1 ) were applied to the soybean plants and evaluated the electron transport rate (ETR), the chemical compounds resulting from the action of glyphosate (shikimic acid, benzoic acid, salicylic acid, AMPA , phenylalanine, tyrosine and tryptophan) and hormesis effect on the dry weight of plants. The second experiment was made a pretreatment of soybean plants with low doses of glyphosate (0; 1.8; 3.6 and 7.2 g a.e.ha-1) in the V2 stage and 14 days later the plants received a second application of different doses of glyphosate (0; 1.8; 3.6; 7.2; 36; 180 e 720 g a.e.ha-1 ) and subsequently evaluated the dry weight of plants and shikimic acid. In the third experiment, was tested a full dose-response of the herbicides amicarbazone, mesotrione, imazapic and carfentrazone on soybean plants and evaluated the ETR and dry weight. The results indicated that at low doses glyphosate stimulated ETR and increased biomass. The compounds from shikimic acid pathway such as benzoic and salicylic acids had respective increases of 203 and 170% in the dose of 3.6 g a.e. ha-1of glyphosate and the amino ...O efeito benéfico de subdoses de substâncias tóxicas é conhecido há muito tempo e este fenômeno é chamado de hormesis. Em agricultura, muitos são os casos de herbicidas que em doses normais causam severas injurias nas plantas, mas que em doses muito baixas promovem o crescimento de estruturas das plantas ou promovem outros efeitos benéficos, como aumento do teor de proteína em plantas. Objetivou-se com este trabalho avaliar o efeito de hormesis dos herbicidas glyphosate, amicarbazone, mesotrione, imazapic e carfentrazone em soja, além de explorar se o efeito de hormesis na soja é afetado por um pré-tratamento com baixas doses de glyphosate e mais tarde exposta as mesmas doses ou doses maiores. Para isso, três experimentos distintos foram conduzidos, sendo que no primeiro, sete doses do herbicida glyphosate (0; 1,8; 3,6; 7,2; 36; 180 e 720 g e.a.ha-1 ) foram aplicadas sobre as plantas de soja e avaliadas quanto à taxa de transporte de elétrons (ETR), acúmulo de compostos químicos alterados em função da ação do glyphosate (ácido chiquímico, ácido benzoico, ácido salicílico, AMPA, fenilalanina, tirosina e triptofano) e massa de matéria seca das plantas. No segundo experimento, foi feito um pré-tratamento das plantas com subdoses do glyphosate (0; 1,8; 3,6 e 7,2 g e.a. ha-1 ) no estádio V2 e 14 dias após esta aplicação, as plantas receberam uma segunda aplicação de diferentes doses do glyphosate (0; 1,8; 3,6; 7,2; 36; 180 e 720 g e.a. ha-1 ) e posteriormente avaliadas quanto ao acúmulo de massa de matéria seca e ácido chiquímico. No terceiro experimento, foram testadas uma completa curva de dose-resposta dos herbicidas amicarbazone, ...Universidade Estadual Paulista (Unesp)Velini, Edivaldo Domingues [UNESP]O.Duke, Stephen [UNESP]E.Dayan, Franck [UNESP]Universidade Estadual Paulista (Unesp)Silva, Ferdinando Marcos Lima [UNESP]2014-12-02T11:16:46Z2014-12-02T11:16:46Z2014-05-23info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisvi, 77 f. : il., color., gráfs, tabs.application/pdfSILVA, Ferdinando Marcos Lima. Hormesis de herbicidas em soja. 2014. vi, 77 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas de Botucatu, 2014.http://hdl.handle.net/11449/110940000791298000791298.pdf33004064039P398554934481617020000-0003-0431-5942Alephreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporinfo:eu-repo/semantics/openAccess2024-05-02T19:49:14Zoai:repositorio.unesp.br:11449/110940Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-05-02T19:49:14Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Hormesis de herbicidas em soja |
title |
Hormesis de herbicidas em soja |
spellingShingle |
Hormesis de herbicidas em soja Silva, Ferdinando Marcos Lima [UNESP] Soja Plantas – Efeito dos herbicidas Resistência a herbicidas Plants, Effect of herbicides on |
title_short |
Hormesis de herbicidas em soja |
title_full |
Hormesis de herbicidas em soja |
title_fullStr |
Hormesis de herbicidas em soja |
title_full_unstemmed |
Hormesis de herbicidas em soja |
title_sort |
Hormesis de herbicidas em soja |
author |
Silva, Ferdinando Marcos Lima [UNESP] |
author_facet |
Silva, Ferdinando Marcos Lima [UNESP] |
author_role |
author |
dc.contributor.none.fl_str_mv |
Velini, Edivaldo Domingues [UNESP] O.Duke, Stephen [UNESP] E.Dayan, Franck [UNESP] Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Silva, Ferdinando Marcos Lima [UNESP] |
dc.subject.por.fl_str_mv |
Soja Plantas – Efeito dos herbicidas Resistência a herbicidas Plants, Effect of herbicides on |
topic |
Soja Plantas – Efeito dos herbicidas Resistência a herbicidas Plants, Effect of herbicides on |
description |
The beneficial effect of low doses of toxic substances is known a long time and this phenomenon is called hormesis. In agriculture, there are many cases of herbicides that in normal rates cause severe injuries in plants, but in very low doses promote the growth of plant structures or other beneficial effect such as increase in the protein content in plants. The objective of this study was to evaluate the effect of hormesis of glyphosate, amicarbazone, mesotrione, imazapic and carfentrazone in soybean, in addition to exploring if the effect of hormesis in soybeans is affected by a pretreatment with low doses of glyphosate and later expose to the same doses or higher. For this, three separate experiments were carried out, and on the first one seven doses of glyphosate (0; 1.8; 3.6; 7.2; 36; 180 and 720 g a.e.ha-1 ) were applied to the soybean plants and evaluated the electron transport rate (ETR), the chemical compounds resulting from the action of glyphosate (shikimic acid, benzoic acid, salicylic acid, AMPA , phenylalanine, tyrosine and tryptophan) and hormesis effect on the dry weight of plants. The second experiment was made a pretreatment of soybean plants with low doses of glyphosate (0; 1.8; 3.6 and 7.2 g a.e.ha-1) in the V2 stage and 14 days later the plants received a second application of different doses of glyphosate (0; 1.8; 3.6; 7.2; 36; 180 e 720 g a.e.ha-1 ) and subsequently evaluated the dry weight of plants and shikimic acid. In the third experiment, was tested a full dose-response of the herbicides amicarbazone, mesotrione, imazapic and carfentrazone on soybean plants and evaluated the ETR and dry weight. The results indicated that at low doses glyphosate stimulated ETR and increased biomass. The compounds from shikimic acid pathway such as benzoic and salicylic acids had respective increases of 203 and 170% in the dose of 3.6 g a.e. ha-1of glyphosate and the amino ... |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12-02T11:16:46Z 2014-12-02T11:16:46Z 2014-05-23 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
SILVA, Ferdinando Marcos Lima. Hormesis de herbicidas em soja. 2014. vi, 77 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas de Botucatu, 2014. http://hdl.handle.net/11449/110940 000791298 000791298.pdf 33004064039P3 9855493448161702 0000-0003-0431-5942 |
identifier_str_mv |
SILVA, Ferdinando Marcos Lima. Hormesis de herbicidas em soja. 2014. vi, 77 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas de Botucatu, 2014. 000791298 000791298.pdf 33004064039P3 9855493448161702 0000-0003-0431-5942 |
url |
http://hdl.handle.net/11449/110940 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
vi, 77 f. : il., color., gráfs, tabs. application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
publisher.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.source.none.fl_str_mv |
Aleph reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964725962866688 |