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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
03/11/1994 |
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Data da última atualização: |
19/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PRABHU, A. S.; BEDENDO, I. P. |
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Afiliação: |
ANNE SITARAMA PRABHU, CNPAF; IVAN PAULO BEDENDO. |
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Título: |
Glume blight of rice in Brazil: etiology, varietal reaction and loss estimates. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
Tropical Pest Management, v. 34, n. 1, p. 85-88, 1988. |
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DOI: |
https://doi.org/10.1080/09670878809371215 |
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Idioma: |
Inglês |
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Conteúdo: |
The causal agent of glume blight in Brazil was determined as Phoma sorghina (Sacc.) Boerema, Dorenbosch & Van Kesteren. The pathogenicity of Brazilian isolates was proved and the characteristic symptoms described. Out of 19 rice varieties tested under artificial inoculations, two vars., Limeira and Iguape Redondo, exhibited a high degree of resistance. Quantitative relationships between glume blight and some yield components were established. The relationship between glume blight severity and filled grain percentage was linear. On the other hand, the grain weight relationship to disease severity was exponential. The disease effect was more pronounced on grain filling than on grain weight. Based on the regression equation, estimated panicle weight losses in 3 different fields of cv. IAC 25 were 41%, 29% and 45% during an epidemic year. The head yield losses in these fields ranged from 0 to 14%. Glume blight was considered to be of minor economic importance in upland rice, but attained epidemic proportions over a large geographical area in 1979?80. The evidence presented shows its potential to cause severe losses in grain weight and quality under weather conditions favorable to the disease, mainly continuous heavy rains during heading. |
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Palavras-Chave: |
Glume Blight. |
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Thesagro: |
Arroz; Doença; Oryza Sativa. |
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Thesaurus NAL: |
Crop losses; Phoma sorghina; Rice. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 01911naa a2200229 a 4500
001 1197998
005 2021-11-19
008 1988 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1080/09670878809371215$2DOI
100 1 $aPRABHU, A. S.
245 $aGlume blight of rice in Brazil$betiology, varietal reaction and loss estimates.$h[electronic resource]
260 $c1988
520 $aThe causal agent of glume blight in Brazil was determined as Phoma sorghina (Sacc.) Boerema, Dorenbosch & Van Kesteren. The pathogenicity of Brazilian isolates was proved and the characteristic symptoms described. Out of 19 rice varieties tested under artificial inoculations, two vars., Limeira and Iguape Redondo, exhibited a high degree of resistance. Quantitative relationships between glume blight and some yield components were established. The relationship between glume blight severity and filled grain percentage was linear. On the other hand, the grain weight relationship to disease severity was exponential. The disease effect was more pronounced on grain filling than on grain weight. Based on the regression equation, estimated panicle weight losses in 3 different fields of cv. IAC 25 were 41%, 29% and 45% during an epidemic year. The head yield losses in these fields ranged from 0 to 14%. Glume blight was considered to be of minor economic importance in upland rice, but attained epidemic proportions over a large geographical area in 1979?80. The evidence presented shows its potential to cause severe losses in grain weight and quality under weather conditions favorable to the disease, mainly continuous heavy rains during heading.
650 $aCrop losses
650 $aPhoma sorghina
650 $aRice
650 $aArroz
650 $aDoença
650 $aOryza Sativa
653 $aGlume Blight
700 1 $aBEDENDO, I. P.
773 $tTropical Pest Management$gv. 34, n. 1, p. 85-88, 1988.
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