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 | Acesso ao texto completo restrito à biblioteca da Epagri-Sede. Para informações adicionais entre em contato com biblio@epagri.sc.gov.br. |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
17/11/2003 |
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Data da última atualização: |
17/11/2003 |
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Autoria: |
DOMINGUES, E. T.; TULMANN NETO, A. |
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Título: |
Influencia da polinizacao e da morfologia floral na frutificacao de variedades de laranja-dose. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 56, n. 1, p. 163-170, jan/mar. 1999. |
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Idioma: |
Português |
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Palavras-Chave: |
Fruta citrica; Laranja-doce; Melhoramento genetico; Polinizacao; Sistema reprodutivo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00569naa a2200181 a 4500
001 1027781
005 2003-11-17
008 1999 bl uuuu u00u1 u #d
100 1 $aDOMINGUES, E. T.
245 $aInfluencia da polinizacao e da morfologia floral na frutificacao de variedades de laranja-dose.
260 $c1999
653 $aFruta citrica
653 $aLaranja-doce
653 $aMelhoramento genetico
653 $aPolinizacao
653 $aSistema reprodutivo
700 1 $aTULMANN NETO, A.
773 $tScientia Agricola, Piracicaba$gv. 56, n. 1, p. 163-170, jan/mar. 1999.
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Epagri-Sede (Epagri-Sede) |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
10/11/2016 |
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Data da última atualização: |
10/11/2016 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
HARO, M. M.; REBELO, A. M.; SILVEIRA, L. C. P. |
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Título: |
How old are you? Plant developmental stage determining essential oils? chemical composition. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: SIMPÓSIO IBERO-AMERICANO DE PLANTAS MEDICINAIS, 8., SIMPÓSIO IBERO-AMERICANO DE INVESTIGAÇÃO EM CÂNCER, 3., 2016, Univali. Resumos... Itajaí: Univali, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
The volatile compounds produced by a plant and consequently present in the essential oil may vary qualitatively and quantitatively depending on the developmental stage and age of the plant. Objective: The aim of this study was to analyze changes in chemical composition of Tagetes erecta L. essential oils extracted at different plant ages. Material and Methodos: Leaves were collected, in three replicates, during the morning after the dew-point at different developmental stage: with floral buds (60 days after germination); flowered with immature seeds (90 days after germination); flowered with mature seeds (120 days after germination). All plant material was dehydrated at 30°C. Essential oil was obtained using 50g of air-dried plant material by hydrodistillation for 2 hours in a Clevenger type system. Samples were subjected to a GC and GC-MS analysis. Variance among different essential oil treatments was initially submitted to a selective process of the compounds that accounts for the maximum explained variance through Stepwise discriminant analysis. The data from the compounds selected were submitted to a canonical variate analysis (CVA). Results and Discussion: The significance of the pairwise separation among treatments groups were determined using the Mahalanobis distance. The essential oils extracted from plants with 60, 90 and 120 days presented respectively 22, 29 and 29 compounds. Developmental stage significantly affected the oil composition (P < 0.001). The monoterpenes camphene, sabinene, β-Pinene, limonene, (E)-β-Ocimene, γ-terpinene and piperitone were the main responsible for the variation in oil composition. Conclusion: Our results suggest the influence of developmental stage in essential oil chemical composition of T. erecta. MenosThe volatile compounds produced by a plant and consequently present in the essential oil may vary qualitatively and quantitatively depending on the developmental stage and age of the plant. Objective: The aim of this study was to analyze changes in chemical composition of Tagetes erecta L. essential oils extracted at different plant ages. Material and Methodos: Leaves were collected, in three replicates, during the morning after the dew-point at different developmental stage: with floral buds (60 days after germination); flowered with immature seeds (90 days after germination); flowered with mature seeds (120 days after germination). All plant material was dehydrated at 30°C. Essential oil was obtained using 50g of air-dried plant material by hydrodistillation for 2 hours in a Clevenger type system. Samples were subjected to a GC and GC-MS analysis. Variance among different essential oil treatments was initially submitted to a selective process of the compounds that accounts for the maximum explained variance through Stepwise discriminant analysis. The data from the compounds selected were submitted to a canonical variate analysis (CVA). Results and Discussion: The significance of the pairwise separation among treatments groups were determined using the Mahalanobis distance. The essential oils extracted from plants with 60, 90 and 120 days presented respectively 22, 29 and 29 compounds. Developmental stage significantly affected the oil composition (P < 0.001). The monoterpe... Mostrar Tudo |
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Palavras-Chave: |
Bioinsecticides; Integrated Pest Management; Semiochemicals. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02461naa a2200181 a 4500
001 1125707
005 2016-11-10
008 2016 bl uuuu u00u1 u #d
100 1 $aHARO, M. M.
245 $aHow old are you? Plant developmental stage determining essential oils? chemical composition.$h[electronic resource]
260 $c2016
520 $aThe volatile compounds produced by a plant and consequently present in the essential oil may vary qualitatively and quantitatively depending on the developmental stage and age of the plant. Objective: The aim of this study was to analyze changes in chemical composition of Tagetes erecta L. essential oils extracted at different plant ages. Material and Methodos: Leaves were collected, in three replicates, during the morning after the dew-point at different developmental stage: with floral buds (60 days after germination); flowered with immature seeds (90 days after germination); flowered with mature seeds (120 days after germination). All plant material was dehydrated at 30°C. Essential oil was obtained using 50g of air-dried plant material by hydrodistillation for 2 hours in a Clevenger type system. Samples were subjected to a GC and GC-MS analysis. Variance among different essential oil treatments was initially submitted to a selective process of the compounds that accounts for the maximum explained variance through Stepwise discriminant analysis. The data from the compounds selected were submitted to a canonical variate analysis (CVA). Results and Discussion: The significance of the pairwise separation among treatments groups were determined using the Mahalanobis distance. The essential oils extracted from plants with 60, 90 and 120 days presented respectively 22, 29 and 29 compounds. Developmental stage significantly affected the oil composition (P < 0.001). The monoterpenes camphene, sabinene, β-Pinene, limonene, (E)-β-Ocimene, γ-terpinene and piperitone were the main responsible for the variation in oil composition. Conclusion: Our results suggest the influence of developmental stage in essential oil chemical composition of T. erecta.
653 $aBioinsecticides
653 $aIntegrated Pest Management
653 $aSemiochemicals
700 1 $aREBELO, A. M.
700 1 $aSILVEIRA, L. C. P.
773 $tIn: SIMPÓSIO IBERO-AMERICANO DE PLANTAS MEDICINAIS, 8., SIMPÓSIO IBERO-AMERICANO DE INVESTIGAÇÃO EM CÂNCER, 3., 2016, Univali. Resumos... Itajaí: Univali, 2016.
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