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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
02/05/2017 |
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Data da última atualização: |
02/05/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VANDERLINDE, G.; BRIGHENTI, A. F.; MALINOVSKI, L. I.; CIPRIANI, R.; SIMON, S.; SANDER, G. F.; ALLEBRANDT, R.; SILVA, A. L. |
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Título: |
Influence of the timing of shoot topping on yield and grape quality in 'Cabernet Sauvignon' and 'Merlot' cultivars. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Acta Horticulturae, Bélgica, n. 1157, p. 407-412, 2017. |
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Idioma: |
Inglês |
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Conteúdo: |
In grapevines, after veraison, shoot topping can balance plant source-sink ratio, directing photoassimilates to the clusters. It is also commonly practiced on vertically shoot positioned vines when shoot growth becomes too long to be supported by the trellis wires. The objective of this study was to evaluate different timing of shoot topping in 'Cabernet Sauvignon' and 'Merlot' cultivars (Vitis vinifera L.), and its effect on yield and grape quality. The experiment was conducted in high altitude areas of Santa Catarina State, Brazil, in the city of São Joaquim (28°14'57?S, 49°58'49?W, altitude 1,295 m). The vineyard was planted in 2005, and the plants were trained on a vertical shooting positioning trellis with spacing 3.0×1.5 m. The experimental design was completely randomised with three shoot topping dates and four repetitions, with ten plants per plot. The plants were topped in 20 cm during full bloom, 4 weeks after full bloom and 8 weeks after full bloom, during the change in berry skin colour. At harvest yield, cluster weight, number of clusters, berries number, pH, total soluble solids, acidity, polyphenols and anthocyanins were evaluated. Data were submitted to analysis of variance and Tukey's test (5% probability). According to the results it was observed that the shoot topping performed during full bloom increases the number of clusters per plant, cluster weight and yield (per plant and per hectare) for both cultivars. In 'Cabernet Sauvignon' shoot topping performed during full bloom anticipates the grape ripening, while in 'Merlot' shoot topping performed 8 weeks after full bloom increases total soluble solids and anthocyanins contents. MenosIn grapevines, after veraison, shoot topping can balance plant source-sink ratio, directing photoassimilates to the clusters. It is also commonly practiced on vertically shoot positioned vines when shoot growth becomes too long to be supported by the trellis wires. The objective of this study was to evaluate different timing of shoot topping in 'Cabernet Sauvignon' and 'Merlot' cultivars (Vitis vinifera L.), and its effect on yield and grape quality. The experiment was conducted in high altitude areas of Santa Catarina State, Brazil, in the city of São Joaquim (28°14'57?S, 49°58'49?W, altitude 1,295 m). The vineyard was planted in 2005, and the plants were trained on a vertical shooting positioning trellis with spacing 3.0×1.5 m. The experimental design was completely randomised with three shoot topping dates and four repetitions, with ten plants per plot. The plants were topped in 20 cm during full bloom, 4 weeks after full bloom and 8 weeks after full bloom, during the change in berry skin colour. At harvest yield, cluster weight, number of clusters, berries number, pH, total soluble solids, acidity, polyphenols and anthocyanins were evaluated. Data were submitted to analysis of variance and Tukey's test (5% probability). According to the results it was observed that the shoot topping performed during full bloom increases the number of clusters per plant, cluster weight and yield (per plant and per hectare) for both cultivars. In 'Cabernet Sauvignon' shoot topping performe... Mostrar Tudo |
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Palavras-Chave: |
hedging; high altitude regions; phenolic maturity; Vitis vinifera L. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02440naa a2200253 a 4500
001 1126204
005 2017-05-02
008 2017 bl uuuu u00u1 u #d
100 1 $aVANDERLINDE, G.
245 $aInfluence of the timing of shoot topping on yield and grape quality in 'Cabernet Sauvignon' and 'Merlot' cultivars.$h[electronic resource]
260 $c2017
520 $aIn grapevines, after veraison, shoot topping can balance plant source-sink ratio, directing photoassimilates to the clusters. It is also commonly practiced on vertically shoot positioned vines when shoot growth becomes too long to be supported by the trellis wires. The objective of this study was to evaluate different timing of shoot topping in 'Cabernet Sauvignon' and 'Merlot' cultivars (Vitis vinifera L.), and its effect on yield and grape quality. The experiment was conducted in high altitude areas of Santa Catarina State, Brazil, in the city of São Joaquim (28°14'57?S, 49°58'49?W, altitude 1,295 m). The vineyard was planted in 2005, and the plants were trained on a vertical shooting positioning trellis with spacing 3.0×1.5 m. The experimental design was completely randomised with three shoot topping dates and four repetitions, with ten plants per plot. The plants were topped in 20 cm during full bloom, 4 weeks after full bloom and 8 weeks after full bloom, during the change in berry skin colour. At harvest yield, cluster weight, number of clusters, berries number, pH, total soluble solids, acidity, polyphenols and anthocyanins were evaluated. Data were submitted to analysis of variance and Tukey's test (5% probability). According to the results it was observed that the shoot topping performed during full bloom increases the number of clusters per plant, cluster weight and yield (per plant and per hectare) for both cultivars. In 'Cabernet Sauvignon' shoot topping performed during full bloom anticipates the grape ripening, while in 'Merlot' shoot topping performed 8 weeks after full bloom increases total soluble solids and anthocyanins contents.
653 $ahedging
653 $ahigh altitude regions
653 $aphenolic maturity
653 $aVitis vinifera L
700 1 $aBRIGHENTI, A. F.
700 1 $aMALINOVSKI, L. I.
700 1 $aCIPRIANI, R.
700 1 $aSIMON, S.
700 1 $aSANDER, G. F.
700 1 $aALLEBRANDT, R.
700 1 $aSILVA, A. L.
773 $tActa Horticulturae, Bélgica$gn. 1157, p. 407-412, 2017.
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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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