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| Registros recuperados : 443 | |
| 5. |  | FRANÇA NETO, J. de B. Perspectivas futuras da cultura da soja no Brasil: produção, produtividade, expansão de área. In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Proceedings... Londrina: Embrapa Soybean, 2004. p. 1203-1209. Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi.| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 443 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Soja. |
|
Data corrente: |
14/09/1995 |
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Data da última atualização: |
01/06/2006 |
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Autoria: |
FRANCA NETO, J. de B. |
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Afiliação: |
EMBRAPA-CNPSo. Londrina, PR. |
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Título: |
Pathological and physiological studies of soybean seed quality. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
[S.l.]: University of Florida, 1989. |
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Páginas: |
121p. |
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Idioma: |
Inglês |
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Notas: |
Ph.D. Dissertation. |
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Conteúdo: |
Pathological and physiological qualities of soybean [Glycine max (L.) Merrill] seeds were studied. In a survey of the quality of commercial soybean seeds produced in Florida in 1986, mechanical damage was the most detrimental factor affecting seed quality, followed by weathering and stink bug damage. Due to climatic conditions, seed produced in the eastern region of the Florida panhandle had lower levels of infection by several fungi. Apparently this region is more suitable for production of soybean seed. Phomopsis spp. were the fungi most frequently associated with soybean seeds (up to 77% incidence). Seed infection was mainly restricted to the seedcoat. Rolled paper toweling was not the best substrate to evaluate germination of soybean seed infected with high incidence of Phomopsis spp. Emergence in sand, which simulates emergence in soil, provide a more representative estimate of viability. The tetrazolium test provided similar results to the emergence-in-sand test. Seed infection by Colletotrichum truncatum (Schw.) Andrus and Moore was mainly restricted to the seedcoat, but 15% of the seed samples had up to 10% embryo infection. Although C. truncatum infected fewer seeds than Phomopsis spp., it caused more damping-off. Emergence in sand provided better estimates of viability for seeds infected by C. truncatum than the standard germination test. Cercospora kikuchii (Matsu. and Tomoyasu) Gardner was almost exclusively restricted to the seedcoat. An antagonistic effect between C. kikuchii and Phomopsis spp. was observed. No detrimental effects of seed infection by C. kikuchii were observed on germination, emergence, and vigor of soybean seeds. The tetrazolium test can be used for estimating germination and vigor of soybean seeds. The test also diagnoses the causes that contribute to lower seed quality, such as mechanical, weathering, and stink bug damages. The tetrazolium test will enable seed producers to identify and correct the causes that affect soybean seed quality. The test is not influenced by the presence of fungi infecting soybean seed. Therefore, this technique can help the researcher visualize and understand some processes of seed deterioration. When combined with bio-assays, the test allows the researcher to separate fungal deterioration from other sources of deterioration. MenosPathological and physiological qualities of soybean [Glycine max (L.) Merrill] seeds were studied. In a survey of the quality of commercial soybean seeds produced in Florida in 1986, mechanical damage was the most detrimental factor affecting seed quality, followed by weathering and stink bug damage. Due to climatic conditions, seed produced in the eastern region of the Florida panhandle had lower levels of infection by several fungi. Apparently this region is more suitable for production of soybean seed. Phomopsis spp. were the fungi most frequently associated with soybean seeds (up to 77% incidence). Seed infection was mainly restricted to the seedcoat. Rolled paper toweling was not the best substrate to evaluate germination of soybean seed infected with high incidence of Phomopsis spp. Emergence in sand, which simulates emergence in soil, provide a more representative estimate of viability. The tetrazolium test provided similar results to the emergence-in-sand test. Seed infection by Colletotrichum truncatum (Schw.) Andrus and Moore was mainly restricted to the seedcoat, but 15% of the seed samples had up to 10% embryo infection. Although C. truncatum infected fewer seeds than Phomopsis spp., it caused more damping-off. Emergence in sand provided better estimates of viability for seeds infected by C. truncatum than the standard germination test. Cercospora kikuchii (Matsu. and Tomoyasu) Gardner was almost exclusively restricted to the seedcoat. An antagonistic effect betw... Mostrar Tudo |
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Palavras-Chave: |
Efeito; Effect; EUA; Fungus; Phomopsis spp; Quality; Seed; Soybean; Tetrazolium test; USA. |
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Thesagro: |
Cercospora Kikuchii; Colletotrichum Truncatum; Fungo; Qualidade; Semente; Soja; Teste de Tetrazólio. |
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Thesaurus NAL: |
fungi. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03164nam a2200349 a 4500
001 1444357
005 2006-06-01
008 1989 bl uuuu m 00u1 u #d
100 1 $aFRANCA NETO, J. de B.
245 $aPathological and physiological studies of soybean seed quality.
260 $a[S.l.]: University of Florida$c1989
300 $a121p.
500 $aPh.D. Dissertation.
520 $aPathological and physiological qualities of soybean [Glycine max (L.) Merrill] seeds were studied. In a survey of the quality of commercial soybean seeds produced in Florida in 1986, mechanical damage was the most detrimental factor affecting seed quality, followed by weathering and stink bug damage. Due to climatic conditions, seed produced in the eastern region of the Florida panhandle had lower levels of infection by several fungi. Apparently this region is more suitable for production of soybean seed. Phomopsis spp. were the fungi most frequently associated with soybean seeds (up to 77% incidence). Seed infection was mainly restricted to the seedcoat. Rolled paper toweling was not the best substrate to evaluate germination of soybean seed infected with high incidence of Phomopsis spp. Emergence in sand, which simulates emergence in soil, provide a more representative estimate of viability. The tetrazolium test provided similar results to the emergence-in-sand test. Seed infection by Colletotrichum truncatum (Schw.) Andrus and Moore was mainly restricted to the seedcoat, but 15% of the seed samples had up to 10% embryo infection. Although C. truncatum infected fewer seeds than Phomopsis spp., it caused more damping-off. Emergence in sand provided better estimates of viability for seeds infected by C. truncatum than the standard germination test. Cercospora kikuchii (Matsu. and Tomoyasu) Gardner was almost exclusively restricted to the seedcoat. An antagonistic effect between C. kikuchii and Phomopsis spp. was observed. No detrimental effects of seed infection by C. kikuchii were observed on germination, emergence, and vigor of soybean seeds. The tetrazolium test can be used for estimating germination and vigor of soybean seeds. The test also diagnoses the causes that contribute to lower seed quality, such as mechanical, weathering, and stink bug damages. The tetrazolium test will enable seed producers to identify and correct the causes that affect soybean seed quality. The test is not influenced by the presence of fungi infecting soybean seed. Therefore, this technique can help the researcher visualize and understand some processes of seed deterioration. When combined with bio-assays, the test allows the researcher to separate fungal deterioration from other sources of deterioration.
650 $afungi
650 $aCercospora Kikuchii
650 $aColletotrichum Truncatum
650 $aFungo
650 $aQualidade
650 $aSemente
650 $aSoja
650 $aTeste de Tetrazólio
653 $aEfeito
653 $aEffect
653 $aEUA
653 $aFungus
653 $aPhomopsis spp
653 $aQuality
653 $aSeed
653 $aSoybean
653 $aTetrazolium test
653 $aUSA
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