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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
14/10/1998 |
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Data da última atualização: |
14/10/1998 |
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Autoria: |
MUIMBA-KANKOLONGO, A.; BERGSTROM, G. C. |
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Título: |
Wound predisposition of maize to anthracnose stalk rot as affected by internode position and inoculum concentration of Colletotrichum graminicola. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Plant Disease, v. 76, n. 2, p. 188-195, Feb., 1992. |
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Idioma: |
Inglês |
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Conteúdo: |
A 2-yr study was carried out to ascertain the nature of wound predisposition of maize to anthracnose stalk rot (ASR) relative to internode position and inoculum level. For each inoculation regime, the most severe ASR developed in the susceptible hybrid. At each inoculum level, the most severe ASR resulted from inoculation at anthesis and immediatelly after wounding. Disease severity increased with increasing inoculum up to 107 conidia per milliliter in greenhouse-grown plants and up to 106 conidia per milliliter in field-grown plants. Genotypic, ontogenic, and "wound healing" resistances to ASR were expressed in maize even at high inoculum levels of C. graminicola Systemic ASR resulted from inoculation immediately after wounding of any of the first five internodes above the brace roots, but wound healing restriced considerably systemic ASR after inoculation of aged wounds in the lowermost stem internodes. |
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Palavras-Chave: |
Fungus; Maize; Predisposition. |
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Thesagro: |
Antracnose; Colletotrichum Graminicola; Fungo; Milho. |
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Thesaurus Nal: |
anthracnose. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01598naa a2200229 a 4500
001 1052970
005 1998-10-14
008 1992 bl --- 0-- u #d
100 1 $aMUIMBA-KANKOLONGO, A.
245 $aWound predisposition of maize to anthracnose stalk rot as affected by internode position and inoculum concentration of Colletotrichum graminicola.
260 $c1992
520 $aA 2-yr study was carried out to ascertain the nature of wound predisposition of maize to anthracnose stalk rot (ASR) relative to internode position and inoculum level. For each inoculation regime, the most severe ASR developed in the susceptible hybrid. At each inoculum level, the most severe ASR resulted from inoculation at anthesis and immediatelly after wounding. Disease severity increased with increasing inoculum up to 107 conidia per milliliter in greenhouse-grown plants and up to 106 conidia per milliliter in field-grown plants. Genotypic, ontogenic, and "wound healing" resistances to ASR were expressed in maize even at high inoculum levels of C. graminicola Systemic ASR resulted from inoculation immediately after wounding of any of the first five internodes above the brace roots, but wound healing restriced considerably systemic ASR after inoculation of aged wounds in the lowermost stem internodes.
650 $aanthracnose
650 $aAntracnose
650 $aColletotrichum Graminicola
650 $aFungo
650 $aMilho
653 $aFungus
653 $aMaize
653 $aPredisposition
700 1 $aBERGSTROM, G. C.
773 $tPlant Disease$gv. 76, n. 2, p. 188-195, Feb., 1992.
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Embrapa Meio-Norte (CPAMN) |
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| 9414. |  | VIANA, L. de O.; CAVALCANTE, E. S.; MONTEIRO, A. F. M.; FAZOLIN, M. Influência da decomposição solar sobre a eficácia inseticida do óleo essencial de Piper aduncum L. no controle da lagarta-do-cartucho do milho. In: CONGRESSO REGIONAL DE PESQUISA DO ESTADO DO ACRE, 2.; SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA UFAC, 25., 2016, Rio Branco/Cruzeiro do Sul. Inovação: sustentabilidade e desenvolvimento regional: anais. Rio Branco, AC: Edufac, 2016. p. 125.| Tipo: Resumo em Anais de Congresso |
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