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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
06/07/2005 |
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Data da última atualização: |
26/07/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PIUBELLI, G. C.; HOFFMANN-CAMPO, C. B.; MOSCARDI, F.; MIYAKUBO, S. H.; OLIVEIRA, M. C. N. de. |
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Afiliação: |
CLARA BEATRIZ HOFFMANN CAMPO, CNPSO; FLAVIO MOSCARDI, CNPSO; SANDRA HITOMI MIYAKUBO, CNPSO; MARIA CRISTINA NEVES DE OLIVEIRA, CNPSO. |
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Título: |
Are chemical compounds important for soybean resistance to Anticarsia gemmatalis? |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Journal of Chemical Ecology, New York, v. 31, n. 7, p. 1509-1525, July 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
The identification and quantification of flavonoids (rutin and genistin) present in extracts of soybean genotypes, and their effects on the biology and physiology of Anticarsia gemmatalis Hübner (Lep.: Noctuidae) were studied. Analysis of covariance and bicoordinate utilization plots were used to remove the effect of feeding time from pupal weight and consumption as well as to separate pre- and postingestive effects of treatment on A. gemmatalis growth. Genotypes PI 274454, PI 227687, and "IAC-100" extracts in general, caused higher mortality, negatively influenced initial larval and pupal weight, and elongated larval cycle. Larvae fed on the "IAC-100" extract diet ingested larger amounts of food per unit of time, but were less efficient in its conversion to biomass. Leaf extracts of PI 227687 had the largest concentration of rutin (quercitin 3-O-rhamnosylglucoside), followed by PI 274454, and "IAC-100"; PI 74454 also had the highest genistin (genistein 7-O-glucoside) content. The susceptible cultivar "BR-16" showed only a kaempferol-based flavonoid in its chemical profile, indicating that after successive crosses, secondary compounds responsible for plant defenses were eliminated. Genotypes PI 274454, PI 227687, and "IAC-100" showed accentuated resistance characteristics and were considered inadequate sources for the development of A. gemmatalis. Considering rutin and genistin concentration in these genotypes, it is suggested that flavonoids are important factors conferring resistance to A. gemmatalis. MenosThe identification and quantification of flavonoids (rutin and genistin) present in extracts of soybean genotypes, and their effects on the biology and physiology of Anticarsia gemmatalis Hübner (Lep.: Noctuidae) were studied. Analysis of covariance and bicoordinate utilization plots were used to remove the effect of feeding time from pupal weight and consumption as well as to separate pre- and postingestive effects of treatment on A. gemmatalis growth. Genotypes PI 274454, PI 227687, and "IAC-100" extracts in general, caused higher mortality, negatively influenced initial larval and pupal weight, and elongated larval cycle. Larvae fed on the "IAC-100" extract diet ingested larger amounts of food per unit of time, but were less efficient in its conversion to biomass. Leaf extracts of PI 227687 had the largest concentration of rutin (quercitin 3-O-rhamnosylglucoside), followed by PI 274454, and "IAC-100"; PI 74454 also had the highest genistin (genistein 7-O-glucoside) content. The susceptible cultivar "BR-16" showed only a kaempferol-based flavonoid in its chemical profile, indicating that after successive crosses, secondary compounds responsible for plant defenses were eliminated. Genotypes PI 274454, PI 227687, and "IAC-100" showed accentuated resistance characteristics and were considered inadequate sources for the development of A. gemmatalis. Considering rutin and genistin concentration in these genotypes, it is suggested that flavonoids are important factors conferring... Mostrar Tudo |
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Thesagro: |
Praga de Planta; Soja. |
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Thesaurus Nal: |
Plant pests; Soybeans. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
null
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Registro original: |
Embrapa Soja (CNPSO) |
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| 1. |  | DUARTE, G. da S.; PERES, M. M.; CORRÊA, B. O.; PIRES, G. da S.; STUMPF, M. M.; MITTELMANN, A. Avaliação de caracteres relacionados ao potencial produtivo em acessos de Capim-elefante. In: REUNIÓN DEL GRUPO TÉCNICO EN FORRAJERAS DEL CONO SUR GRUPO CAMPOS, 22., 2008, Minas. Resumos...Minas: INIA, 2008. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
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