Epidemiologia comparativa da mancha parda e queima das folhas da mandioca
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRPE |
Texto Completo: | http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8010 |
Resumo: | Leaf spots are one of the main problems affecting the cassava production, especially brown leaf spot (BLS) and blight leaf spot (BliLS) caused by Passalora henningsii and Passalora vicosae, respectively. The occurrence of these leaf spots in commercial areas in the northeastern region of Brazil, mainly in the state of Pernambuco, and the absence of information demonstrate the need for further studies on these diseases. In this study, the effect of temperature and luminosity on conidial growing/germination was evaluated in vitro. The range of temperature that was favorable to the growth of P. vicosae was broader than P. henningsii. This is an intrinsic characteristic of the pathogen that allows the disease to develop in different seasons and growing regions. The percentage of germination of conidia was reduced in the presence of light for P. vicosae, whereas for P. henningsii the germination was similar both in the presence or absence of light. To better understand the behavior of the diseases, a comparative epidemiology of BLS and BliLS was performed in growing areas in the regions of the Agreste and Zona da Mata of Pernambuco. The results demonstrated that BLS occurs more frequently in the Agreste, whose temperatures are lower and the humidity is high. In the Zona da Mata, with higher temperatures during the evaluation period, there was predominance of BliLS. Levels of severity were highest in the lower leaves, and were correlated with the increase of the age of the plants. Defoliation occurred earlier in the Agreste than in Zona da Mata, reaching similar levels in both regions (25% in all growing areas). Both BLS and BliLS severity were reduced by application of the fungicide flutriafol, showing that the chemical control may be a strategy to control these leaf spots. In general, the results obtained in this study allow a better understanding of the epidemiology of BLS and BliLS, which are little studied diseases. The information may be useful in the development of management strategies aiming to reduce the damage caused by these diseases in the cassava crop. |
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LOPES, Ueder PedroMICHEREFF, Sami JorgeLOPES, Ueder PedroANDRADE, Domingos Eduardo Guimarães Tavares deMARTINS, Ricardo Brainerhttp://lattes.cnpq.br/8370089865266785SANTANA, Marthony Dornelas2019-05-14T16:36:44Z2018-02-23SANTANA, Marthony Dornelas. Epidemiologia comparativa da mancha parda e queima das folhas da mandioca. 2018. 43 f. Dissertação (Programa de Pós-Graduação em Produção Agrícola) - Universidade Federal Rural de Pernambuco, Garanhuns.http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8010Leaf spots are one of the main problems affecting the cassava production, especially brown leaf spot (BLS) and blight leaf spot (BliLS) caused by Passalora henningsii and Passalora vicosae, respectively. The occurrence of these leaf spots in commercial areas in the northeastern region of Brazil, mainly in the state of Pernambuco, and the absence of information demonstrate the need for further studies on these diseases. In this study, the effect of temperature and luminosity on conidial growing/germination was evaluated in vitro. The range of temperature that was favorable to the growth of P. vicosae was broader than P. henningsii. This is an intrinsic characteristic of the pathogen that allows the disease to develop in different seasons and growing regions. The percentage of germination of conidia was reduced in the presence of light for P. vicosae, whereas for P. henningsii the germination was similar both in the presence or absence of light. To better understand the behavior of the diseases, a comparative epidemiology of BLS and BliLS was performed in growing areas in the regions of the Agreste and Zona da Mata of Pernambuco. The results demonstrated that BLS occurs more frequently in the Agreste, whose temperatures are lower and the humidity is high. In the Zona da Mata, with higher temperatures during the evaluation period, there was predominance of BliLS. Levels of severity were highest in the lower leaves, and were correlated with the increase of the age of the plants. Defoliation occurred earlier in the Agreste than in Zona da Mata, reaching similar levels in both regions (25% in all growing areas). Both BLS and BliLS severity were reduced by application of the fungicide flutriafol, showing that the chemical control may be a strategy to control these leaf spots. In general, the results obtained in this study allow a better understanding of the epidemiology of BLS and BliLS, which are little studied diseases. The information may be useful in the development of management strategies aiming to reduce the damage caused by these diseases in the cassava crop.As manchas foliares são um dos principais problemas na cultura da mandioca, com destaque para a mancha parda (MP) e a queima das folhas (QF), causadas por Passalora henningsii e Passalora vicosae, respectivamente. A ocorrência destas manchas foliares em plantios comerciais na região Nordeste, particularmente no estado de Pernambuco, aliada à escassez de informações, demonstram a necessidade de estudos mais aprofundados acerca destas doenças. Neste trabalho foi realizado um estudo in vitro a fim de avaliar o efeito da temperatura e luminosidade sobre o crescimento/germinação dos conídios. Foi verificado que de P. vicosae apresenta uma faixa mais ampla de temperatura favorável ao seu crescimento, quando comparado à P. henningsii. Esta característica, intrínseca do patógeno, permite que a doença se desenvolva em diferentes épocas do ano e em diferentes regiões de cultivo. Além disso, foi verificado que conídios de P. vicosae apresentaram redução na porcentagem de germinação na presença de luz, enquanto para P. henningsii não houve qualquer influência, apresentando germinação similar tanto na presença quanto na ausência de luz. A fim de entender melhor o comportamento das doenças, foi realizado um estudo de epidemiologia comparativa da MP e QF em áreas de cultivo nas regiões do Agreste e Zona da Mata de Pernambuco. De modo geral, os resultados demonstraram a maior ocorrência de MP no Agreste, onde predominam temperaturas médias mais baixas e umidade elevada. Já na Zona da Mata, onde as temperaturas foram mais elevadas ao longo de todo o período de avaliação, houve predominância da QF. Para ambas as doenças, os maiores níveis de severidade foram observados nos estratos inferiores das plantas, estando correlacionados também com o aumento da idade das plantas. A desfolha ocorreu mais precocemente no Agreste do que na Zona da Mata, mas atingiu níveis similares em ambas as regiões, chegando a 25% em todas as áreas de cultivo analisadas. Tanto MP quanto QF foram reduzidas pela aplicação do fungicida flutriafol, mostrando que o controle químico pode ser uma estratégia de controle destas manchas foliares. De modo geral, os resultados obtidos neste estudo permitem o melhor entendimento da epidemiologia da MP e QF, que são doenças ainda pouco estudadas. As informações geradas poderão ser úteis no desenvolvimento de estratégias de manejo, que visem reduzir os danos causados por essas doenças na cultura da mandioca.Submitted by Mario BC (mario@bc.ufrpe.br) on 2019-05-14T16:36:44Z No. of bitstreams: 1 Marthony Dornelas Santana.pdf: 1091075 bytes, checksum: 9978e3c54d56318d30e4dca3dd313685 (MD5)Made available in DSpace on 2019-05-14T16:36:44Z (GMT). No. of bitstreams: 1 Marthony Dornelas Santana.pdf: 1091075 bytes, checksum: 9978e3c54d56318d30e4dca3dd313685 (MD5) Previous issue date: 2018-02-23Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfporUniversidade Federal Rural de PernambucoPrograma de Pós-Graduação em Produção AgrícolaUFRPEBrasilUnidade Acadêmica de GaranhunsMancha foliarPassalora henningsiiPassalora vicosaeManihot esculentaMandiocaCIENCIAS AGRARIASEpidemiologia comparativa da mancha parda e queima das folhas da mandiocainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis-723645219733019298560060060060060077205141824112794117828424726906663919-25559114369857136592075167498588264571info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRPEinstname:Universidade Federal Rural de Pernambuco (UFRPE)instacron:UFRPEORIGINALMarthony Dornelas Santana.pdfMarthony Dornelas Santana.pdfapplication/pdf1091075http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/8010/2/Marthony+Dornelas+Santana.pdf9978e3c54d56318d30e4dca3dd313685MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82165http://www.tede2.ufrpe.br:8080/tede2/bitstream/tede2/8010/1/license.txtbd3efa91386c1718a7f26a329fdcb468MD51tede2/80102019-05-14 13:36:44.418oai:tede2: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Biblioteca Digital de Teses e Dissertaçõeshttp://www.tede2.ufrpe.br:8080/tede/PUBhttp://www.tede2.ufrpe.br:8080/oai/requestbdtd@ufrpe.br ||bdtd@ufrpe.bropendoar:2019-05-14T16:36:44Biblioteca Digital de Teses e Dissertações da UFRPE - Universidade Federal Rural de Pernambuco (UFRPE)false |
dc.title.por.fl_str_mv |
Epidemiologia comparativa da mancha parda e queima das folhas da mandioca |
title |
Epidemiologia comparativa da mancha parda e queima das folhas da mandioca |
spellingShingle |
Epidemiologia comparativa da mancha parda e queima das folhas da mandioca SANTANA, Marthony Dornelas Mancha foliar Passalora henningsii Passalora vicosae Manihot esculenta Mandioca CIENCIAS AGRARIAS |
title_short |
Epidemiologia comparativa da mancha parda e queima das folhas da mandioca |
title_full |
Epidemiologia comparativa da mancha parda e queima das folhas da mandioca |
title_fullStr |
Epidemiologia comparativa da mancha parda e queima das folhas da mandioca |
title_full_unstemmed |
Epidemiologia comparativa da mancha parda e queima das folhas da mandioca |
title_sort |
Epidemiologia comparativa da mancha parda e queima das folhas da mandioca |
author |
SANTANA, Marthony Dornelas |
author_facet |
SANTANA, Marthony Dornelas |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
LOPES, Ueder Pedro |
dc.contributor.advisor-co1.fl_str_mv |
MICHEREFF, Sami Jorge |
dc.contributor.referee1.fl_str_mv |
LOPES, Ueder Pedro |
dc.contributor.referee2.fl_str_mv |
ANDRADE, Domingos Eduardo Guimarães Tavares de |
dc.contributor.referee3.fl_str_mv |
MARTINS, Ricardo Brainer |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/8370089865266785 |
dc.contributor.author.fl_str_mv |
SANTANA, Marthony Dornelas |
contributor_str_mv |
LOPES, Ueder Pedro MICHEREFF, Sami Jorge LOPES, Ueder Pedro ANDRADE, Domingos Eduardo Guimarães Tavares de MARTINS, Ricardo Brainer |
dc.subject.por.fl_str_mv |
Mancha foliar Passalora henningsii Passalora vicosae Manihot esculenta Mandioca |
topic |
Mancha foliar Passalora henningsii Passalora vicosae Manihot esculenta Mandioca CIENCIAS AGRARIAS |
dc.subject.cnpq.fl_str_mv |
CIENCIAS AGRARIAS |
description |
Leaf spots are one of the main problems affecting the cassava production, especially brown leaf spot (BLS) and blight leaf spot (BliLS) caused by Passalora henningsii and Passalora vicosae, respectively. The occurrence of these leaf spots in commercial areas in the northeastern region of Brazil, mainly in the state of Pernambuco, and the absence of information demonstrate the need for further studies on these diseases. In this study, the effect of temperature and luminosity on conidial growing/germination was evaluated in vitro. The range of temperature that was favorable to the growth of P. vicosae was broader than P. henningsii. This is an intrinsic characteristic of the pathogen that allows the disease to develop in different seasons and growing regions. The percentage of germination of conidia was reduced in the presence of light for P. vicosae, whereas for P. henningsii the germination was similar both in the presence or absence of light. To better understand the behavior of the diseases, a comparative epidemiology of BLS and BliLS was performed in growing areas in the regions of the Agreste and Zona da Mata of Pernambuco. The results demonstrated that BLS occurs more frequently in the Agreste, whose temperatures are lower and the humidity is high. In the Zona da Mata, with higher temperatures during the evaluation period, there was predominance of BliLS. Levels of severity were highest in the lower leaves, and were correlated with the increase of the age of the plants. Defoliation occurred earlier in the Agreste than in Zona da Mata, reaching similar levels in both regions (25% in all growing areas). Both BLS and BliLS severity were reduced by application of the fungicide flutriafol, showing that the chemical control may be a strategy to control these leaf spots. In general, the results obtained in this study allow a better understanding of the epidemiology of BLS and BliLS, which are little studied diseases. The information may be useful in the development of management strategies aiming to reduce the damage caused by these diseases in the cassava crop. |
publishDate |
2018 |
dc.date.issued.fl_str_mv |
2018-02-23 |
dc.date.accessioned.fl_str_mv |
2019-05-14T16:36:44Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
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dc.identifier.citation.fl_str_mv |
SANTANA, Marthony Dornelas. Epidemiologia comparativa da mancha parda e queima das folhas da mandioca. 2018. 43 f. Dissertação (Programa de Pós-Graduação em Produção Agrícola) - Universidade Federal Rural de Pernambuco, Garanhuns. |
dc.identifier.uri.fl_str_mv |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8010 |
identifier_str_mv |
SANTANA, Marthony Dornelas. Epidemiologia comparativa da mancha parda e queima das folhas da mandioca. 2018. 43 f. Dissertação (Programa de Pós-Graduação em Produção Agrícola) - Universidade Federal Rural de Pernambuco, Garanhuns. |
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http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8010 |
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