Registro fonte: Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho

Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho

Corn (Zea mays L.) is one of the most cultivated cereals in the world and plays an important role in the world economy. With the expansion of planting of the culture, the harmonic conviviality between the cutlura and the diseases was reduced, increasing with this, the damages caused, mainly by phyto...

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Autor principal:	Borin, Regis Callegaro
Formato:	Dissertação
Idioma:	Português
Publicado em:	Universidade Tecnológica Federal do Paraná 2017
Assuntos:	Milho - Doenças e pragas Sementes - Doenças e pragas Sementes - Qualidade Corn - Diseases and pests Seed pathology Seeds - Quality CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA::PRODUCAO E BENEFICIAMENTO DE SEMENTES Fitotecnia
Acesso em linha:	http://repositorio.utfpr.edu.br/jspui/handle/1/2429
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spelling	riut-1-24292017-09-12T13:07:54Z Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho Fungicides associated with phosphites and nutritional complex affect the quality of maize seed Borin, Regis Callegaro Possenti, Jean Carlo http://lattes.cnpq.br/1962026290421057 Possenti, Jean Carlo Mazaro, Sérgio Miguel Costa, Ivan Francisco Dressler da Bahry, Carlos André Milho - Doenças e pragas Sementes - Doenças e pragas Sementes - Qualidade Corn - Diseases and pests Seed pathology Seeds - Quality CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA::PRODUCAO E BENEFICIAMENTO DE SEMENTES Fitotecnia Corn (Zea mays L.) is one of the most cultivated cereals in the world and plays an important role in the world economy. With the expansion of planting of the culture, the harmonic conviviality between the cutlura and the diseases was reduced, increasing with this, the damages caused, mainly by phytopathogenic fungi. Knowing these needs, two studies were carried out that involved the use of isolated phosphites and, associated with commercial fungicides recommended for the treatment of seeds. The objective of this study was to evaluate the potential of phosphites on Fusarium verticilliodes and Fusarium graminearum in in vitro and in vivo conditions on the physiological quality and health of the seeds and a possible activation of the seedling defense metabolism. For the first study, an in vitro experiment was carried out to evaluate the effect of the phosphites at the doses corresponding to 0; 0.2; 0.4; 0.6; 0.8; And 1mL / 1.0 Kg of seeds. The phosphites were deposited in culture medium poured into BDA medium, adjusting the pH to 5.6. In Petri dishes, 7 mm mycelium discs of the fungi F. verticilliodes and F. graminearum were arranged. The plates were incubated at a temperature of 24 ± 1 ° C in a 12-hour light / dark photoperiod. Then, the mycelial growth in response to the treatments was evaluated. Also, in this study, the sanity of maize seeds, treated with mixtures of commercial phosphites and fungicides, was evaluated. For the treatment of the seeds, the fungicides carbendazim + thiram, fludioxonil + metalaxyl-m were used in association with fertilizers based on potassium phosphite, copper, nutritional complex and potentiating complex, at doses of 1,5; 3.0; 1; 1; 2 and 3 mL / 1 Kg of seeds respectively. For the second study, fertilizers based on potassium and copper phosphites were associated with the commercial fungicides carbendazim + thiram, fludioxonil + metalaxyl-m, to evaluate their effects on the physiological performance of the seeds and to identify the possible metabolic routes involved in the Process of plant defense. The viability, through the germination test and the vigor, were quantified by subjecting the seeds to the tests of accelerated aging, cold test, seedling length and dry matter and field emergence, calculating the rate of emergency, emergency speed and emergency speed coefficient. Plant material, was collected and performed the biochemical analyzes of total proteins, and activity of the enzymes phenylalanine ammonia lyase, chitinase and β-1,3 glucanase. In vitro mycelial growth of the two fungi was affected by the phosphite treatments. Mycelial suppression occurred with potassium phosphite and manganese phosphite. It was found that the best sanitary condition of the seeds was obtained when the mixture of carbendazim + thiram and potassium phosphite was used. The effect of potassium and copper phosphites on corn seed treatment associated with fungicides increased their physiological potential. The treatments did not interfere in the activation of the phenylpropanoic route and in the synthesis of the enzymes chitinase and β-1,3 glucanase when used for the treatment of corn seeds. O milho (Zea mays L.) é um dos cereais mais cultivados no mundo e apresenta papel importante na economia mundial. Com a expansão do plantio da cultura, reduziu-se o convívio harmônico entre a cutlura e as doenças, aumentando com isso, os danos causados, principalmente por fungos fitopatogênicos. Sabendo-se destas necessidades, foram realizados dois estudos que envolveram o uso de fosfitos isolados e, associados com fungicidas comerciais recomendados para o tratamento de sementes. Objetivou-se avaliar o potencial dos fosfitos sobre Fusarium verticilliodes e Fusarium graminearum em condições in vitro e em in vivo sobre a sanidade e qualidade fisiológica das sementes e uma possível ativação do metabolismo de defesa das plantulas. Para o primeiro estudo, foi realizado um experimento in vitro, objetivando avaliar o efeito dos fosfitos, nas doses correspondentes à 0; 0,2; 0,4; 0,6; 0,8; e 1mL/1,0 Kg de sementes. Os fosfitos foram depositados em meio de cultura vertidos em meio BDA, ajustando-se o pH para 5,6. Em placas de Petri, foram dispostos discos de micélio de 7 mm dos fungos F. verticilliodes e F. graminearum. As placas foram incubadas em temperatura de 24 + ou – 1ºC com fotoperíodo de 12 horas luz/escuro. Então, avaliou-se o crescimento micelial em resposta aos tratamentos. Ainda, nesse estudo avaliou-se a sanidade de sementes de milho, tratadas com misturas de fosfitos e fungicidas comerciais. Para o tratamento das sementes, usou-se os fungicidas carbendazim + thiram, fludioxonil + metalaxyl−m em associação com fertilizantes a base de fosfito de potássio, de cobre, complexo nutricional e complexo potencializador, nas doses de 1,5; 3,0; 1; 1; 2 e 3 mL/1 Kg de sementes respectivamente. Para o segundo estudo, os fertilizantes a base de fosfitos de potássio e de cobre foram associados aos fungicidas comerciais carbendazim + thiram, fludioxonil + metalaxyl−m, para avaliar os seus efeitos sobre o desempenho fisiológico das sementes e identificar as possíveis rotas metabólicas envolvidas no processo de defesa vegetal. Foram quantificadas a viabilidade, por meio do teste de germinação e o vigor, submetendo-se as sementes aos testes de envelhecimento acelerado, teste de frio, comprimento e materia seca de plântulas e emergencia em campo, calculando-se o indice de velocidade de emergência, velocidade de emergência e coeficiente de velocidade de emergência. O material vegetal, foi coletado e realizadas as análises bioquímicas de proteínas totais, e atividade das enzimas fenilalanina amônialiase, quitinase e β 1,3 glucanase. O crescimento micelial in vitro dos dois fungos foi afetado pelos tratamentos à base de fosfitos. Ocorreu maior supressão micelial com o fosfito de potássio e fosfito de manganês. Verificou-se que o melhor estado sanitário das sementes foi obtido quando utilizou-se a mistura de carbendazim + thiram e fosfito de potássio. O efeito dos fosfitos de potássio e cobre no tratamento de sementes de milho, associados a fungicidas incrementaram o seu potencial fisiológico. Os tratamentos não interferiram na ativação da rota dos fenilpropanóides e na síntese das enzimas quitinase e β 1,3 glucanase, quando utilizados para o tratamento de sementes de milho. 2017-09-12T13:07:54Z 2017-09-12T13:07:54Z 2017-04-11 masterThesis BORIN, Regis Callegaro. Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho. 2017. 82 f. Dissertação (Mestrado em Agronomia) - Universidade Tecnológica Federal do Paraná, Pato Branco, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2429 por openAccess application/pdf Universidade Tecnológica Federal do Paraná Pato Branco Brasil Programa de Pós-Graduação em Agronomia UTFPR
institution	Universidade Tecnológica Federal do Paraná
collection	RIUT
language	Português
topic	Milho - Doenças e pragas Sementes - Doenças e pragas Sementes - Qualidade Corn - Diseases and pests Seed pathology Seeds - Quality CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA::PRODUCAO E BENEFICIAMENTO DE SEMENTES Fitotecnia
spellingShingle	Milho - Doenças e pragas Sementes - Doenças e pragas Sementes - Qualidade Corn - Diseases and pests Seed pathology Seeds - Quality CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA::PRODUCAO E BENEFICIAMENTO DE SEMENTES Fitotecnia Borin, Regis Callegaro Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho
description	Corn (Zea mays L.) is one of the most cultivated cereals in the world and plays an important role in the world economy. With the expansion of planting of the culture, the harmonic conviviality between the cutlura and the diseases was reduced, increasing with this, the damages caused, mainly by phytopathogenic fungi. Knowing these needs, two studies were carried out that involved the use of isolated phosphites and, associated with commercial fungicides recommended for the treatment of seeds. The objective of this study was to evaluate the potential of phosphites on Fusarium verticilliodes and Fusarium graminearum in in vitro and in vivo conditions on the physiological quality and health of the seeds and a possible activation of the seedling defense metabolism. For the first study, an in vitro experiment was carried out to evaluate the effect of the phosphites at the doses corresponding to 0; 0.2; 0.4; 0.6; 0.8; And 1mL / 1.0 Kg of seeds. The phosphites were deposited in culture medium poured into BDA medium, adjusting the pH to 5.6. In Petri dishes, 7 mm mycelium discs of the fungi F. verticilliodes and F. graminearum were arranged. The plates were incubated at a temperature of 24 ± 1 ° C in a 12-hour light / dark photoperiod. Then, the mycelial growth in response to the treatments was evaluated. Also, in this study, the sanity of maize seeds, treated with mixtures of commercial phosphites and fungicides, was evaluated. For the treatment of the seeds, the fungicides carbendazim + thiram, fludioxonil + metalaxyl-m were used in association with fertilizers based on potassium phosphite, copper, nutritional complex and potentiating complex, at doses of 1,5; 3.0; 1; 1; 2 and 3 mL / 1 Kg of seeds respectively. For the second study, fertilizers based on potassium and copper phosphites were associated with the commercial fungicides carbendazim + thiram, fludioxonil + metalaxyl-m, to evaluate their effects on the physiological performance of the seeds and to identify the possible metabolic routes involved in the Process of plant defense. The viability, through the germination test and the vigor, were quantified by subjecting the seeds to the tests of accelerated aging, cold test, seedling length and dry matter and field emergence, calculating the rate of emergency, emergency speed and emergency speed coefficient. Plant material, was collected and performed the biochemical analyzes of total proteins, and activity of the enzymes phenylalanine ammonia lyase, chitinase and β-1,3 glucanase. In vitro mycelial growth of the two fungi was affected by the phosphite treatments. Mycelial suppression occurred with potassium phosphite and manganese phosphite. It was found that the best sanitary condition of the seeds was obtained when the mixture of carbendazim + thiram and potassium phosphite was used. The effect of potassium and copper phosphites on corn seed treatment associated with fungicides increased their physiological potential. The treatments did not interfere in the activation of the phenylpropanoic route and in the synthesis of the enzymes chitinase and β-1,3 glucanase when used for the treatment of corn seeds.
format	Dissertação
author	Borin, Regis Callegaro
author_sort	Borin, Regis Callegaro
title	Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho
title_short	Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho
title_full	Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho
title_fullStr	Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho
title_full_unstemmed	Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho
title_sort	fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho
publisher	Universidade Tecnológica Federal do Paraná
publishDate	2017
citation	BORIN, Regis Callegaro. Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho. 2017. 82 f. Dissertação (Mestrado em Agronomia) - Universidade Tecnológica Federal do Paraná, Pato Branco, 2017.
url	http://repositorio.utfpr.edu.br/jspui/handle/1/2429
_version_	1805313599666651136
score	10,814766

Fungicidas associados à fosfitos e complexos nutricionais interferem na qualidade de sementes de milho

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