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Registro Completo |
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
18/04/1998 |
Data da última atualização: |
18/04/1998 |
Autoria: |
QUINDERE, M. A. W.; SANTOS, J. H. R. dos. |
Título: |
Indice de diversidade da entomofauna em caupi consorciado com milho. |
Ano de publicação: |
1985 |
Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.20, n.10, p.1119-1123, out. 1985. |
Idioma: |
Português |
Conteúdo: |
A pesquisa em questao foi conduzida na Fazenda Experimental do Vale do Curu, localizada em Pentecoste, CE. Determinou-se, embora em carater exploratorio, o indice de diversidade total e o de parasitos e predadores em plantio de caupi (Vigna unguiculata (L.) Walp) e do milho (Zea mays L.), cultivados em consorcio e em cultura pura. O menor indice de diversidade total ocorreu no caupi solteiro (0,24) e o maior nos tratamentos correspondentes ao caupi plantado depois do milho (0,33). Com relacao aos parasitos e predadores, o milho solteiro apresentou o maior indice. Os resultados obtidos permitiram concluir que Hymenoptera Chelonus sp e um eficiente inimigo natural de Spodoptera frugiperda. Por outro lado, Diptera parasitos, pertencentes as familias Tachinidae e Sarcophagidae, sao mais abundantes no milho solteiro que em sistemas consorciados de caupi e milho e em cultivos de caupi solteiro. |
Palavras-Chave: |
Parasitos; Predadores. |
Thesagro: |
Spodoptera Frugiperda; Vigna Unguiculata; Zea Mays. |
Thesaurus Nal: |
Chelonus. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01489naa a2200205 a 4500 001 1104608 005 1998-04-18 008 1985 bl uuuu u00u1 u #d 100 1 $aQUINDERE, M. A. W. 245 $aIndice de diversidade da entomofauna em caupi consorciado com milho. 260 $c1985 520 $aA pesquisa em questao foi conduzida na Fazenda Experimental do Vale do Curu, localizada em Pentecoste, CE. Determinou-se, embora em carater exploratorio, o indice de diversidade total e o de parasitos e predadores em plantio de caupi (Vigna unguiculata (L.) Walp) e do milho (Zea mays L.), cultivados em consorcio e em cultura pura. O menor indice de diversidade total ocorreu no caupi solteiro (0,24) e o maior nos tratamentos correspondentes ao caupi plantado depois do milho (0,33). Com relacao aos parasitos e predadores, o milho solteiro apresentou o maior indice. Os resultados obtidos permitiram concluir que Hymenoptera Chelonus sp e um eficiente inimigo natural de Spodoptera frugiperda. Por outro lado, Diptera parasitos, pertencentes as familias Tachinidae e Sarcophagidae, sao mais abundantes no milho solteiro que em sistemas consorciados de caupi e milho e em cultivos de caupi solteiro. 650 $aChelonus 650 $aSpodoptera Frugiperda 650 $aVigna Unguiculata 650 $aZea Mays 653 $aParasitos 653 $aPredadores 700 1 $aSANTOS, J. H. R. dos 773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.20, n.10, p.1119-1123, out. 1985.
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Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
04/05/2016 |
Data da última atualização: |
05/05/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
ARAUJO, L.; SOARES, J. M.; FILIPPI, M. C. C. de; RODRIGUES, F. A. |
Afiliação: |
LEONARDO ARAUJO, UFV; JULIANA MOREIRA SOARES, UFV; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; FABRÍCIO ÁVILA RODRIGUES, UFV. |
Título: |
Cytological aspects of incompatible and compatible interactions between rice, wheat and the blast pathogen Pyricularia oryzae. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 73, n. 2, p. 177-183, mar./abr. 2016. |
DOI: |
10.1590/0103-9016-2015-0169 |
Idioma: |
Inglês |
Conteúdo: |
Blast, caused by the fungus Pyricularia oryzae, is an important disease affecting rice and wheat yield worldwide. This study investigated the cytological aspects of incompatible (non-host resistance) and compatible (host resistance) rice- (R_Po) and wheat- (W_Po) Pyricularia oryzae isolate interactions. Inoculations of rice and wheat with the R_Po and W_Po isolates of P. oryzae, respectively, were expected to be compatible interactions (host resistance), whereas inoculations of rice and wheat with the W_Po and R_Po isolates of P. oryzae, respectively, were considered to be incompatible interactions (non-host resistance). For the compatible interactions (rice-R_Po and wheat-W_Po), fungal hyphae penetrated and colonized the epidermal cells and also invaded many neighboring cells. By contrast, in the case of the incompatible interactions (rice-W_Po and wheat-R_Po), fungal hyphae were not able to penetrate nor colonize the epidermal cells, but when penetration did occur, the hyphae were restricted to the first-invaded epidermal cell. The frequency of appressorial sites exhibiting infection hyphae within the epidermal cell underlying an appressorium was greater in the case of the compatible interactions. By contrast, unsuccessful penetrations with cytoplasmic granulation occurred with high frequency in the incompatible wheat-R_Po and rice-W_Po interactions and the number of necrotic epidermal cells underlying the appressorium was low for the rice-W_Po interaction as well as for the wheat- R_Po interaction, where no symptoms of necrosis were exhibited. However, the opposite was observed for the compatible interactions. The present study presents cytological features associated with incompatible and compatible rice- and wheat-P. oryzae interactions that may be useful to studies involving variability, coevolution, diagnosis, and regulation of quarantine or even in a rice or wheat breeding program whose aim is to transfer genes involved in non-host resistance to host resistance due to similarities in downstream mechanisms. MenosBlast, caused by the fungus Pyricularia oryzae, is an important disease affecting rice and wheat yield worldwide. This study investigated the cytological aspects of incompatible (non-host resistance) and compatible (host resistance) rice- (R_Po) and wheat- (W_Po) Pyricularia oryzae isolate interactions. Inoculations of rice and wheat with the R_Po and W_Po isolates of P. oryzae, respectively, were expected to be compatible interactions (host resistance), whereas inoculations of rice and wheat with the W_Po and R_Po isolates of P. oryzae, respectively, were considered to be incompatible interactions (non-host resistance). For the compatible interactions (rice-R_Po and wheat-W_Po), fungal hyphae penetrated and colonized the epidermal cells and also invaded many neighboring cells. By contrast, in the case of the incompatible interactions (rice-W_Po and wheat-R_Po), fungal hyphae were not able to penetrate nor colonize the epidermal cells, but when penetration did occur, the hyphae were restricted to the first-invaded epidermal cell. The frequency of appressorial sites exhibiting infection hyphae within the epidermal cell underlying an appressorium was greater in the case of the compatible interactions. By contrast, unsuccessful penetrations with cytoplasmic granulation occurred with high frequency in the incompatible wheat-R_Po and rice-W_Po interactions and the number of necrotic epidermal cells underlying the appressorium was low for the rice-W_Po interaction as well as for t... Mostrar Tudo |
Palavras-Chave: |
Host resistance. |
Thesagro: |
Arroz; Brusone; Doença de planta; Oryza sativa; Trigo; Triticum aestivum. |
Thesaurus NAL: |
Blast disease; Magnaporthe oryzae. |
Categoria do assunto: |
H Saúde e Patologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/142771/1/CNPAF-2016-sa.pdf
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Marc: |
LEADER 02878naa a2200277 a 4500 001 2044441 005 2020-05-05 008 2016 bl uuuu u00u1 u #d 024 7 $a10.1590/0103-9016-2015-0169$2DOI 100 1 $aARAUJO, L. 245 $aCytological aspects of incompatible and compatible interactions between rice, wheat and the blast pathogen Pyricularia oryzae. 260 $c2016 520 $aBlast, caused by the fungus Pyricularia oryzae, is an important disease affecting rice and wheat yield worldwide. This study investigated the cytological aspects of incompatible (non-host resistance) and compatible (host resistance) rice- (R_Po) and wheat- (W_Po) Pyricularia oryzae isolate interactions. Inoculations of rice and wheat with the R_Po and W_Po isolates of P. oryzae, respectively, were expected to be compatible interactions (host resistance), whereas inoculations of rice and wheat with the W_Po and R_Po isolates of P. oryzae, respectively, were considered to be incompatible interactions (non-host resistance). For the compatible interactions (rice-R_Po and wheat-W_Po), fungal hyphae penetrated and colonized the epidermal cells and also invaded many neighboring cells. By contrast, in the case of the incompatible interactions (rice-W_Po and wheat-R_Po), fungal hyphae were not able to penetrate nor colonize the epidermal cells, but when penetration did occur, the hyphae were restricted to the first-invaded epidermal cell. The frequency of appressorial sites exhibiting infection hyphae within the epidermal cell underlying an appressorium was greater in the case of the compatible interactions. By contrast, unsuccessful penetrations with cytoplasmic granulation occurred with high frequency in the incompatible wheat-R_Po and rice-W_Po interactions and the number of necrotic epidermal cells underlying the appressorium was low for the rice-W_Po interaction as well as for the wheat- R_Po interaction, where no symptoms of necrosis were exhibited. However, the opposite was observed for the compatible interactions. The present study presents cytological features associated with incompatible and compatible rice- and wheat-P. oryzae interactions that may be useful to studies involving variability, coevolution, diagnosis, and regulation of quarantine or even in a rice or wheat breeding program whose aim is to transfer genes involved in non-host resistance to host resistance due to similarities in downstream mechanisms. 650 $aBlast disease 650 $aMagnaporthe oryzae 650 $aArroz 650 $aBrusone 650 $aDoença de planta 650 $aOryza sativa 650 $aTrigo 650 $aTriticum aestivum 653 $aHost resistance 700 1 $aSOARES, J. M. 700 1 $aFILIPPI, M. C. C. de 700 1 $aRODRIGUES, F. A. 773 $tScientia Agricola, Piracicaba$gv. 73, n. 2, p. 177-183, mar./abr. 2016.
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