Danos de Rhopalosiphum padi (Linnaeus, 1758) (Hemiptera : Aphididae) em cultivares e estádios fenológicos de trigo
| Ano de defesa: | 2010 |
|---|---|
| Autor(a) principal: | |
| Orientador(a): | |
| Banca de defesa: | |
| Tipo de documento: | Dissertação |
| Tipo de acesso: | Acesso aberto |
| Idioma: | por |
| Instituição de defesa: |
Ciências Agrárias
Programa de Pós-Graduação em Agronomia |
| Programa de Pós-Graduação: |
Não Informado pela instituição
|
| Departamento: |
Não Informado pela instituição
|
| País: |
Não Informado pela instituição
|
| Palavras-chave em Português: | |
| Link de acesso: | https://repositorio.upf.br/handle/123456789/9156 |
Resumo: | The increase of Rhopalosiphum padi populations in wheat crops in recent years has caused considerable damage, causing demand for knowledge about the potential damage of this pest in this culture. Three experiments were conducted in greenhouse (completely randomized) aiming of characterize the damage of R. padi in different growth stages of wheat cultivars. In experiments I (tillering) and II (elongation) the treatments were: cultivars (BRS Guabiju, BRS Timbaúva and Embrapa 16) and infestation levels (0 and 40 aphids/plant). In experiment III (BRS Guabiju - tillering) the treatments were duration (6, 14 and 20 days) and infestation levels (0, 10 and 40 aphids/plant) with and without elimination of the offspring. After the infestation period the following evaluations were performed: yellowing and height of plants; number of tillers, ears and grains; grain yield; thousand grains weight; hectoliter weight; dry mass of shoots and roots and germination and vigour tests. In experiments I and II the cultivar BRS Timbaúva had the lowest reduction in the parameters evaluated and the lowest rates in populational growth of R. padi when compared to cultivars BRS Guabiju and Embrapa 16. In experiment III the parameters evaluated indicated that the percentage of loss was increasing gradually as the number of aphids/day increased. In conclusion, the duration, in days, and the infestation levels of R. padi in the cultivars are directly proportional to the severity of the damage, although each genotype evaluated demonstrated a different response to the attack of R. padi |
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Danos de Rhopalosiphum padi (Linnaeus, 1758) (Hemiptera : Aphididae) em cultivares e estádios fenológicos de trigoTrigo - Doenças e pragasTrigo - CultivoWheat - Diseases and pestsWheat - PlantingCNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIAThe increase of Rhopalosiphum padi populations in wheat crops in recent years has caused considerable damage, causing demand for knowledge about the potential damage of this pest in this culture. Three experiments were conducted in greenhouse (completely randomized) aiming of characterize the damage of R. padi in different growth stages of wheat cultivars. In experiments I (tillering) and II (elongation) the treatments were: cultivars (BRS Guabiju, BRS Timbaúva and Embrapa 16) and infestation levels (0 and 40 aphids/plant). In experiment III (BRS Guabiju - tillering) the treatments were duration (6, 14 and 20 days) and infestation levels (0, 10 and 40 aphids/plant) with and without elimination of the offspring. After the infestation period the following evaluations were performed: yellowing and height of plants; number of tillers, ears and grains; grain yield; thousand grains weight; hectoliter weight; dry mass of shoots and roots and germination and vigour tests. In experiments I and II the cultivar BRS Timbaúva had the lowest reduction in the parameters evaluated and the lowest rates in populational growth of R. padi when compared to cultivars BRS Guabiju and Embrapa 16. In experiment III the parameters evaluated indicated that the percentage of loss was increasing gradually as the number of aphids/day increased. In conclusion, the duration, in days, and the infestation levels of R. padi in the cultivars are directly proportional to the severity of the damage, although each genotype evaluated demonstrated a different response to the attack of R. padiO aumento da incidência de Rhopalosiphum padi na cultura de trigo nos últimos anos tem causado prejuízo considerável, originando demanda por conhecimentos sobre o potencial de dano desta praga na cultura. Foram conduzidos três experimentos em telado (delineamento completamente casualizado) com o objetivo de caracterizar os danos R. padi em diferentes estádios fenológicos de cultivares de trigo. Nos experimentos I (afilhamento) e II (elongação) foram avaliados os tratamentos: cultivares (BRS Guabiju, BRS Timbaúva e Embrapa 16) e nível de infestação (0 e 40 pulgões/planta). No experimento III (BRS Guabiju ¿ afilhamento) foram avaliados os tratamentos duração (6, 14 e 20 dias) e níveis de infestação (0, 10 e 40 pulgões/planta) com e sem eliminação da prole. Após o período de infestação foram realizadas as seguintes avaliações: amarelecimento e estatura de plantas, número de afilhos, espigas e grãos, peso de grãos, peso de mil grãos, peso do hectolitro, massa seca da parte aérea e da raiz e testes de germinação e vigor. Nos experimentos I e II o cultivar BRS Timbaúva apresentou os menores percentuais de redução nos parâmetros avaliados e as menores taxas no crescimento populacional de R. padi quando comparado aos cultivares BRS Guabiju e Embrapa 16. No experimento III os parâmetros avaliados indicam que o percentual de redução foi aumentando gradativamente conforme aumentou o número de pulgões/dia. Conclui-se que a duração, e os níveis de infestação de R. padi nos cultivares são diretamente proporcionais à severidade dos danos causados, embora cada genótipo avaliado tenha demonstrado uma resposta diferente ao ataque de R. padiCiências AgráriasPrograma de Pós-Graduação em AgronomiaSalvadori, José Robertohttp://lattes.cnpq.br/4772153060990625Savaris, Marcoandre2025-06-20T16:41:25Z2010-04-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfhttps://repositorio.upf.br/handle/123456789/9156porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UPFinstname:Universidade de Passo Fundo (UPF)instacron:UPF2025-07-24T03:08:31Zoai:repositorio.upf.br:123456789/9156Repositório InstitucionalPRIhttp://repositorio.upf.br/oai/requestjucelei@upf.br||biblio@upf.bropendoar:16102025-07-24T03:08:31Repositório Institucional da UPF - Universidade de Passo Fundo (UPF)false |
| dc.title.none.fl_str_mv |
Danos de Rhopalosiphum padi (Linnaeus, 1758) (Hemiptera : Aphididae) em cultivares e estádios fenológicos de trigo |
| title |
Danos de Rhopalosiphum padi (Linnaeus, 1758) (Hemiptera : Aphididae) em cultivares e estádios fenológicos de trigo |
| spellingShingle |
Danos de Rhopalosiphum padi (Linnaeus, 1758) (Hemiptera : Aphididae) em cultivares e estádios fenológicos de trigo Savaris, Marcoandre Trigo - Doenças e pragas Trigo - Cultivo Wheat - Diseases and pests Wheat - Planting CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIA |
| title_short |
Danos de Rhopalosiphum padi (Linnaeus, 1758) (Hemiptera : Aphididae) em cultivares e estádios fenológicos de trigo |
| title_full |
Danos de Rhopalosiphum padi (Linnaeus, 1758) (Hemiptera : Aphididae) em cultivares e estádios fenológicos de trigo |
| title_fullStr |
Danos de Rhopalosiphum padi (Linnaeus, 1758) (Hemiptera : Aphididae) em cultivares e estádios fenológicos de trigo |
| title_full_unstemmed |
Danos de Rhopalosiphum padi (Linnaeus, 1758) (Hemiptera : Aphididae) em cultivares e estádios fenológicos de trigo |
| title_sort |
Danos de Rhopalosiphum padi (Linnaeus, 1758) (Hemiptera : Aphididae) em cultivares e estádios fenológicos de trigo |
| author |
Savaris, Marcoandre |
| author_facet |
Savaris, Marcoandre |
| author_role |
author |
| dc.contributor.none.fl_str_mv |
Salvadori, José Roberto http://lattes.cnpq.br/4772153060990625 |
| dc.contributor.author.fl_str_mv |
Savaris, Marcoandre |
| dc.subject.por.fl_str_mv |
Trigo - Doenças e pragas Trigo - Cultivo Wheat - Diseases and pests Wheat - Planting CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIA |
| topic |
Trigo - Doenças e pragas Trigo - Cultivo Wheat - Diseases and pests Wheat - Planting CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOSSANIDADE::FITOPATOLOGIA |
| description |
The increase of Rhopalosiphum padi populations in wheat crops in recent years has caused considerable damage, causing demand for knowledge about the potential damage of this pest in this culture. Three experiments were conducted in greenhouse (completely randomized) aiming of characterize the damage of R. padi in different growth stages of wheat cultivars. In experiments I (tillering) and II (elongation) the treatments were: cultivars (BRS Guabiju, BRS Timbaúva and Embrapa 16) and infestation levels (0 and 40 aphids/plant). In experiment III (BRS Guabiju - tillering) the treatments were duration (6, 14 and 20 days) and infestation levels (0, 10 and 40 aphids/plant) with and without elimination of the offspring. After the infestation period the following evaluations were performed: yellowing and height of plants; number of tillers, ears and grains; grain yield; thousand grains weight; hectoliter weight; dry mass of shoots and roots and germination and vigour tests. In experiments I and II the cultivar BRS Timbaúva had the lowest reduction in the parameters evaluated and the lowest rates in populational growth of R. padi when compared to cultivars BRS Guabiju and Embrapa 16. In experiment III the parameters evaluated indicated that the percentage of loss was increasing gradually as the number of aphids/day increased. In conclusion, the duration, in days, and the infestation levels of R. padi in the cultivars are directly proportional to the severity of the damage, although each genotype evaluated demonstrated a different response to the attack of R. padi |
| publishDate |
2010 |
| dc.date.none.fl_str_mv |
2010-04-30 2025-06-20T16:41:25Z |
| dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
| dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
| format |
masterThesis |
| status_str |
publishedVersion |
| dc.identifier.uri.fl_str_mv |
https://repositorio.upf.br/handle/123456789/9156 |
| url |
https://repositorio.upf.br/handle/123456789/9156 |
| dc.language.iso.fl_str_mv |
por |
| language |
por |
| dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
| dc.format.none.fl_str_mv |
application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
Ciências Agrárias Programa de Pós-Graduação em Agronomia |
| publisher.none.fl_str_mv |
Ciências Agrárias Programa de Pós-Graduação em Agronomia |
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reponame:Repositório Institucional da UPF instname:Universidade de Passo Fundo (UPF) instacron:UPF |
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Universidade de Passo Fundo (UPF) |
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UPF |
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UPF |
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Repositório Institucional da UPF |
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Repositório Institucional da UPF |
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Repositório Institucional da UPF - Universidade de Passo Fundo (UPF) |
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jucelei@upf.br||biblio@upf.br |
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1864264072948613120 |