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Made available in DSpace on 2022-04-29T08:46:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 Grapevines are used to be trained to different systems, while there is a paucity of literature on the main cordon disposition with regards to grape quality, especially grafted on to different rootstocks. Therefore, a field experiment took place in the city of São Manuel, state of São Paulo, Brazil. This study aimed to evaluate the quality of the 'Niagara Rosada' grapes by training them to vertical shoot position (VSP) system with unilateral and bilateral cordons grafted on to rootstocks during two crop seasons (2015 and 2016). To assess the data, a 22 factorial setup organized in a randomized complete block design was used, corresponding to two rootstocks ('IAC 766 Campinas' and 'IAC 572 Jales') and two cordons (unilateral and bilateral cordon). The variables assessed were the content of soluble solids, titratable acidity, fruit-ripeness index, reducing sugars, total phenolic compounds, total flavonoids, anthocyanins, antioxidant activity via DPPH and FRAP. Results indicated that 'IAC 766 Campinas' rootstock and bilateral cordon improved the chemical quality in grapes, especially the contents of anthocyanins and sugars. This management practice should be selected when growing 'Niágara Rosada' grapes, provided that there is an influence in the quality of the final product. Centro Universitário das Faculdades Integradas de Ourinhos, SP Universidade Estadual Paulista Júlio de Mesquita Filho Câmpus de Botucatu Faculdade de Ciências Agronômicas, SP Universidade Estadual Paulista Júlio de Mesquita Filho Câmpus de Botucatu Faculdade de Ciências Agronômicas, SP

The objective of this study is to evaluate the effect of rootstocks on grape production, quality and antioxidant capacity of ‘Niagara Rosada’ grape in two productive cycles. The work was developed in Jundiaí-SP, Brazil (26° 06’ S, 46° 55’ W and an average altitude of 745 m). The experimental design was in randomized blocks with subdivided plots, the plots being represented by the rootstocks and the subplots by the production cycles, with four replications, each consisting of 6 plants. The treatments consisted of a combination of ‘IAC 313 Tropical’, ‘IAC 572 Jales’, ‘IAC 571-6 Jundiaí’, ‘IAC 766 Campinas’ and ‘106-8 Mgt’ as rootstocks and ‘Niagara Rosada’ as graft, and the production cycles were 2013 and 2014. The number of bunches, production and productivity of the vines, the physical characteristics of bunches, berries and stalks and the physicochemical composition of the must (soluble solids content, titratable acidity, pH and the relation soluble solids/titratable acidity) were evaluated in production cycles of 2013 and 2014). The content of chlorophylls, anthocyanins, carotenoids, flavonoids and total phenolic compounds and the antioxidant activity of grapes were also evaluated in grape berries. The rootstocks did not influence the production and physical quality of ‘Niagara Rosada’ grapes. As for the chemical characteristics, rootstocks only had an effect on solids content, and ‘IAC 766’ and ‘106-8 Mgt’ rootstocks promoted higher values of this characteristic. Likewise, the total phenolic compounds and the antioxidant activity of the grapes were not influenced by the studied rootstocks. The vines in 2013 presented higher production and better physical characteristics of the grapes, however, the soluble solids content in this cycle was lower than in 2014. Objetivou-se avaliar a influência de porta-enxertos na produção da videira, na qualidade e capacidade antioxidante da uva ‘Niagara Rosada’ em dois ciclos produtivos. O trabalho foi realizado em Jundiaí-SP, Brasil (26° 06’ S, 46° 55’ W e uma altitude média de 745m). O delineamento experimental foi de blocos causalizados em parcelas subdivididas, as parcelas foram representas pelos porta-enxertos e as subparcelas pelos ciclos de produção, com quatro repetições, constituídas de 6 plantas. Os tratamentos consistiram na combinação entre os porta-enxertos ‘IAC 313 Tropical’, ‘IAC 572 Jales’, ‘IAC 571-6 Jundiaí’, ‘IAC 766 Campinas’ e ‘106-8 Mgt’ e a variedade copa ‘Niagara Rosada’, e os ciclos produtivos de 2013 e 2014. O número de cachos, produção e produtividade das videiras, as características físicas de cachos, bagas e engaços e a composição físico-química do mosto (teor de sólidos solúveis, acidez titulável, pH e relação sólidos solúveis/acidez titulável) foram avaliados nos ciclos de produção de 2013 e 2014. Avaliou-se ainda nas bagas das uvas o conteúdo de clorofilas, antocianinas, carotenoides, flavonoides e compostos fenólicos totais e a atividade antioxidante. Os porta-enxertos não influenciaram a produção e a qualidade física da uva ‘Niagara Rosada’. Quanto as características químicas houve efeito dos porta-enxertos apenas no teor de sólidos solúveis, sendo que os porta-enxertos ‘IAC 766’ e ‘106-8 Mgt’ promoveram maiores valores dessa característica. Da mesma forma, os compostos fenólicos totais e a atividade antioxidante das uvas não foram influenciados pelos porta-enxertos estudados. As videiras, em 2013 apresentaram maior produção e melhores características físicas das uvas, no entanto, o teor de sólidos solúveis nesse ciclo foi inferior ao de 2014.

Sao Paulo State University (Unesp) School of Agriculture Botucatu, Jose Barbosa de Barros Street

Tradicionais produtoras de uvas finas para mesa, as regiões de Pilar do Sul e São Miguel Arcanjo requerem estudos relacionados à evolução da maturação a fim de garantir a colheita de frutos que atendam as exigências de mercado. O objetivo deste trabalho foi avaliar a maturação da uva ‘Benitaka’ cultivada em clima subtropical. O experimento foi realizado em um vinhedo comercial da uva ‘Benitaka’ enxertada no porta-enxerto 420-A, em sistema de condução do tipo pérgola, no sétimo ano de produção, localizado em Pilar do Sul, SP, Brasil (23º 48’ S, 47º 42’ O e altitude de 689 m), no ciclo produtivo de 2014/15. A partir do início da maturação, aos 114 dias após a poda (DAP), realizou-se amostragem semanal das bagas para a determinação dos teores de sólidos solúveis (SS), pH, acidez titulável (AT), relação SS/AT e açúcares redutores (AR), se estendendo a amostragem de bagas até a colheita (156 DAP). A uva ‘Benitaka’ cultivada em região subtropical apresentou boas características físico-químicas aos 156 dias após a poda, com valores de SS de 15,99 ºBrix, AT de 0,49 % de ácido tartárico, pH 3,73, relação SS/AT de 32,68 e AR de 14,10 %.

This study aimed to assess the application effect of abscisic acid (S-ABA) on color, and total anthocyanin and phenolic compound contents of the ‘Niagara Rosada’ grapes. The experiment was carried out in a commercial vineyard located in Jales, SP, Brazil, during 2014/2015. The randomized block design was used with four treatments and five replications. The treatments consisted of applying different concentrations of S-ABA: 0 mg L-1 (control); 400 mg L-1 of S-ABA at the beginning of maturation (BM); 400 mg L-1 of S-ABA in the BM + 200 mg L-1 25 days after the first application (25 DAFA) and 400 mg L-1 of S-ABA in IM + 400 mg L-1 at 25 DAFA. At harvest, the following variables were evaluated: luminosity (L*), saturation (C*), hue (h°) and color index (CIRG). The total anthocyanin content, as well the total phenolic compounds of berries were also determined. The application of 400 mg L-1 of S-ABA in the BM + 200 mg L-1 to 25 DAFA significantly increased the total anthocyanin content of the ‘Niagara Rosada’ grapes, improving the color of the berries as well. Key words: Abscisic acid, Niagara Rosada’ grapes, color, total anthocyanin, phenolic compound.

The abscisic acid (ABA) is related to the formation of certain polyphenols, such as anthocyanin, improving the nutritional and commercial quality of the red grapes. In this study, we verified whether the exogenous application of S-ABA favors the accumulation of anthocyanin, the total phenolic compounds and the antioxidant activity of the ‘Rubi’ grape. The experiment was performed during the cycle 2014/2015 with the ‘Rubi’ vine (Vitis vinifera L.) grafted in the rootstock 420-A. The experimental design was composed of randomized blocks, with four treatments and six blocks, in a total of 24 experimental parcels, constituted of one plant each. We used the S-ABA isomer in different concentrations and times of application, 400 mg·L-1 S-ABA in the beginning of the ripening (BR); 400 mg·L-1 at BR + 200 mg·L-1 at 25 days after first application (DAFA); 400 mg·L-1at BR + 400 mg·L-1 at 25 DAFA; besides the control (0 mg·L-1). After 40 days of the first application, the samples were harvested and we verified that the S-ABA induced the accumulation of anthocyanins and total phenolic compounds in the ‘Rubi’ grape. From these results we can recommend two applications of S-ABA, 400 mg·L-1 at BR + 200 mg·L-1 at 25 DAFA.

Made available in DSpace on 2020-12-12T02:28:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The current study aimed to evaluate the effect of different rootstocks ('IAC 766', 'IAC 572', 'IAC 313', 'IAC 571-6' and '106-8 Mgt') on the physicochemical quality of 'Niagara Rosada' grape under Brazilian subtropical climate. In this study, a vineyard trellising system supported three years old vines at a density of 6536 plants ha-1. Therefore, evaluations consisted of three pruning seasons: two winter pruning (August 2011 and September 2012) and a summer pruning (January 2012). A complete randomized block design was conducted, subdivided into plots, with five replicates, the plots represented by 5 rootstocks and subplots by pruning seasons. We evaluated bunch number per plant; bunch, berry and rachis fresh mass; berries number per bunch; soluble solid, pH and titratable acidity content in the grape must. Results showed that 'Niagara Rosada' grafted onto 'IAC 572', presented the highest bunch mass (227g), rachis fresh mass (7.5g) and berries number per bunch (66); while 'IAC 313' rootstock performed the lowest values. Moreover, 'IAC 766' and '106-8 Mgt' rootstocks presented the highest soluble solid and titratable acidity content, due to these rootstock's precocity. Furthermore, the highest ratio between soluble solid and titratable acidity was found in 'Niagara Rosada' grafted onto 'IAC 313' and 'IAC 571-6' rootstock. Sao Paulo State University (Unesp) School of Agriculture Botucatu, Universitaria Avenue Agronomic Institute of Campinas (IAC) APTA Fruit centre, 1500 Luiz Pereira do Santos Avenue Sao Paulo State University (Unesp) School of Agriculture Botucatu, Universitaria Avenue FAPESP: #2011/03440-6

Made available in DSpace on 2021-06-25T12:42:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-06-01 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The ?Niagara Rosada? (Vitis labrusca) grape is widely consumed for its nutritional qualities and flavor, in addition to presenting a great diversity of phytochemical compounds, mainly polyphenols. ?Niagara Rosada? has a limited shelf life, especially when kept at room temperature, a common form used by markets in Brazil. Salicylic acid (SA) is a low-cost alternative postharvest technique, due to its accessibility (low cost) and potential to mitigate postharvest losses, in addition to maintaining quality. Exogenous application of salicylic acid in the pre-harvest period was studied to improve the postharvest quality of ?Niagara Rosada? grapes with the aim of increasing its shelf life. SA was applied in different doses, in two stages during the pre-harvest, in the season of berry growth and during veraison. The results show that 1 and 2 mmol L-1 were efficient in reducing the incidence of berry drop and decay of berries. Treatments with SA provided an increase in phenolic compounds. Among the phenolic acids, there was an increase in chlorogenic acid and gallic acid, related to antifungal action. Regarding polyphenols, rutin, cyanidin-3,5-diglucoside and 3-O-glycosidic delphinidin were the major compounds found in all treatments. Salicylic acid induced an increase in serotonin and melatonin content, as well as in the aminoacids (tryptophan and 5-hydroxytryptophan). During the storage, there was a decrease in histamine and dopamine levels. These alterations may be used as a tool to induce fruit resistance during storage, leading to an increase of crop yields. Thus, exogenous treatment using 1 and 2 mmol L-1 SA increases postharvest life, improves biochemical quality of the musts and induces increased antioxidant compounds. Sao Paulo State Univ, Sch Agron, Dept Hort, BR-18618000 Botucatu, SP, Brazil Sao Paulo State Univ, Inst Biosci, Dept Chem & Biol Sci, BR-18618000 Botucatu, SP, Brazil Ctr Univ Fac Integradas Ourinhos, BR-19900080 Ourinhos, SP, Brazil Sao Paulo State Univ, Sch Agron, Dept Hort, BR-18618000 Botucatu, SP, Brazil Sao Paulo State Univ, Inst Biosci, Dept Chem & Biol Sci, BR-18618000 Botucatu, SP, Brazil CAPES: 1687131 CNPq: 307571/2019-0 FAPESP: 2016/22665-2

Made available in DSpace on 2021-06-25T12:29:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Grape pomace is the main residue from juice and wine industries, and their derived products such as flours, can be a rich source of phenolic compounds and antioxidants. The overall objective of this study was to assess the phenolic compounds, antioxidant capacity, biogenic amines, and amino acids in flours obtained from grape pomace. Four cultivars ('Niagara Rosada', 'Bordo', 'BRS Violeta', and 'IAC 138-22 Maximo') were used, isolated or as blends, for juice production and from the resulting pomace, flours were produced. All flours assessed, independently of the cultivar or blend, showed valuable potential to addition in new products. The lowest levels of phenolic compounds and antioxidant capacity were observed in the flour produced entirely from cultivar 'Niagara Rosada'. However, when 'Niagara Rosada' was incorporated in blends with other cultivars, flours with increased levels of phenolic compounds and antioxidant capacity were obtained. The flour production gives a better destination for industrial waste, since these flours can be used for food, cosmetic, and pharmaceutical industries as additives or supplements to improve the antioxidant and bioactive content of their products. Sao Paulo State Univ, Sch Agr, Dept Hort, Botucatu, SP, Brazil Sao Paulo State Univ, Inst Biosci, Dept Chem & Biochem, BR-18618689 Botucatu, SP, Brazil Univ Nacl Agr, Dept Food Technol, Barrio El Espino, Catacamas, Honduras Sao Paulo State Univ, Sch Agr, Dept Hort, Botucatu, SP, Brazil Sao Paulo State Univ, Inst Biosci, Dept Chem & Biochem, BR-18618689 Botucatu, SP, Brazil FAPESP: 2016/22665-2 CNPq: 305177/2015-0 CNPq: 307571/2019-0 CAPES: 88882.433043/2019-01

Made available in DSpace on 2018-12-11T17:37:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-11-18 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The objective of this work was to evaluate the yield components and physicochemical characteristics of bunches and berries of new grape varieties for juice elaboration, which were ‘Isabel Precoce’ (Vitis labrusca L.) and the hybrids ‘BRS Carmem’ ‘BRS Cora’ and IAC 138-22 ‘Máximo’ grown onto ‘IAC 572’ and ‘IAC 766’ rootstocks under tropical conditions. The yield components (number of bunches and yield per vine, as well as productivity) and the physicochemical characteristics of the bunches and berries of the eight scion-rootstock combinations were evaluated in three seasons. All data were subjected to analysis of variance and principal components analysis. The varieties ‘Isabel Precoce’ ‘BRS Cora’ and IAC 138 22 ‘Máximo’ produced high fruit yield, with the number of bunches and yield per vine similar to one another and superior to those of ‘BRS Carmem’. Significant differences occurred among varieties in the physicochemical grape characteristics. ‘Isabel Precoce’ and ‘BRS Carmem’ grapes had balanced levels of sugar and acid content, and ‘BRS Cora’ presented large bunches and berries, reaching high soluble solids content despite the high acidity. IAC 138-22 ‘Máximo’ grape also had large bunches but small berries and limited potential in the accumulation of sugars. The ‘IAC 766’ rootstock resulted in the best performance across all four varieties evaluated, showing maximum results in terms of fruit yield and physicochemical quality attributes of grapes. São Paulo State University (Unesp) School of Agriculture, José Barbosa de Barros Street, nº 1780, 18.610-307 Instituto Agronômico (IAC) Centro APTA de Frutas, Luiz Pereira dos Santos Avenue, nº 1.500 São Paulo State University (Unesp) School of Agriculture, José Barbosa de Barros Street, nº 1780, 18.610-307 CNPq: 140211/2015-2 FAPESP: 2015/16440-5

Made available in DSpace on 2022-04-29T08:00:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-01-01 The color of the berry grapes is due to existence of anthocyanins and their accumulation seems to be regulated, at least in part, by abscisic acid. Therefore, exogenous applications of this regulator may increase the anthocyanins concentration in the grapes skin. The objective of this study was to evaluate the effect of abscisic acid on the color of berries and in the anthocyanin accumulation and total phenolic compounds of 'Rubi' grapes. The 'Rubi' grape (Vitis vinifera) variety was studied in the sixth year of production. The experimental design was randomized blocks, with 4 treatments and 6 replications. The treatments consisted of isomer concentrations of (S)-cis-abscisic acid (S-ABA), as follow: Control (0 mg L -1); 400 mg L-1 de S- ABA at the beginning of the maturation (BM); 400 mg L-1 at BM + 200 mg L-1 at 25 DAFA (25 days after the first application) and 400 mg L-1 in BM + 400 mg L-1 at 25 DAFA. The berry bunches were sprayed in the morning, using costal sprayer providing full and uniform coverage. The colorimetric characteristics were determined with colorimeter obtaining the following variables: luminosity, saturation, hue angle and color index. The fresh mass, length and width of bunch (berries and stems), number of berries per bunch, soluble solids, titratable acidity, soluble solids/acidity ratio, pH, reducing sugars, anthocyanins, and phenolic compounds were evaluated. The abscisic acid (S-ABA) promoted the physical characteristics of the bunch and berries slightly with no effect on the stems. However, it triggered significant increase in soluble solids content and in the soluble solids/acidity ratio. It also increased the anthocyanin and total phenolic compounds, especially when applied twice, regardless of the concentration, in addition to improve color attributes. It is recommended the application of 400 mg L-1 at BM + 200 mg L-1 at 25 DAFA can be useful to increase anthocyanin and total phenolic and to improve color attributes. Department of Horticulture São Paulo State University 'Júlio de Mesquita Filho' Faculty of Agricultural Sciences (FCA), José Barbosa de Barros, no 1.780 Department of Chemistry and Biochemistry São Paulo State University 'Júlio de Mesquita Filho' Institute of Biosciences (IBB), Dr. Antônio Celso Wagner Zanin, s/n Department of Agronomy Londrina State University, Celso Garcia Cid Road, km 380 Department of Horticulture São Paulo State University 'Júlio de Mesquita Filho' Faculty of Agricultural Sciences (FCA), José Barbosa de Barros, no 1.780 Department of Chemistry and Biochemistry São Paulo State University 'Júlio de Mesquita Filho' Institute of Biosciences (IBB), Dr. Antônio Celso Wagner Zanin, s/n