ABSTRACT This study aimed to evaluate the productive performance and physicochemical traits of wine grape cultivars (Cabernet Sauvignon, Syrah, Cabernet Franc, Merlot, and Sauvignon Blanc) grafted on two different rootstocks (IAC 766 Campinas, and 106-8 Mgt) under subtropical conditions. The productive components (number of bunches, production per vine, yield, number of berries per bunch, fresh mass, length, and width of berries) and the grape must physicochemical composition (pH, titratable acidity, soluble solids, and maturation index) were determined after four consecutive harvest seasons. Results from analysis of variance and principal component analysis showed that Cabernet Franc and Syrah were generally more productive than the other ones. In addition to that, Cabernet Sauvignon presented the lowest production and the smallest grape berries of all. With regards to rootstocks, IAC 766 induced higher scions yield than 106-8 Mgt; besides that, IAC 766 had greater affinity with Cabernet Franc and Merlot, which was observed by the increase in the number of bunches per vine, larger and heavier bunches, as well as higher soluble solids content and pH value than the ones in 106-8 Mgt. Furthermore, IAC 766 also induced higher soluble solids content and pH value for Cabernet Sauvignon. Results showed similar effects for Syrah and Sauvignon Blanc, regardless of the rootstocks.

ABSTRACT Phenology, bunch morphology, and must quality are essential factors to the selection of grapevine cultivars for winemaking. This study aimed to evaluate five grapevine hybrids grafted onto two rootstocks, looking for fruit with the best characteristics for producing wine. The hybrids studied were ‘BRS Lorena’, ‘IAC 21-14 Madalena’, ‘Moscatel de Jundiaí’, ‘Moscato Embrapa’ and ‘SR 0.501-17’ grafted onto ‘IAC 572 Jales’ and ‘IAC 766 Campinas’ rootstock. Phenology was evaluated weekly, and the number of days from pruning to sprouting, flowering, and maturation was calculated. Fruit production, bunch morphology, and must quality were evaluated for each genotype and rootstock. ‘SR 0.501-17’ was classified as a genotype with a medium cycle, with fruit maturing 20 days earlier than the other hybrids, which were, therefore, classified as late-cycling. No interaction was noted between hybrids and rootstocks relative to bunch morphology. The must of ‘Moscato Embrapa’ grafted onto ‘IAC 766 Campinas’ rootstock had higher maturation index than that grafted onto ‘IAC 572 Jales’ rootstock. ‘BRS Lorena’ and ‘SR 0.501-17’ produced smaller berries, must with medium acidity, and higher soluble solid contents, as compared with other hybrids, resulting in the best bunch morphology and must quality for winemaking.

ABSTRACT The SR 0.501-17 grape hybrid developed for wine making purposes, is characterized for producing white grapes and small berries with seeds. The purpose of this study was to characterize the phenology, thermal requirements and must physicochemical characteristics of the hybrid, in contrasting climatic conditions due to altitude at Jundiaí (715m) and Votuporanga (483m) respectively located at east and northwest of the São Paulo State-Brazil. Evaluations were performed from 2012 to 2016 and observations during the vine growth period and data of phenology and must soluble solids content and acidity measurements at harvest were taken. Average duration of the pruning-harvest period was 146 and 131 days and grape maturation period was 29 and 27 days, respectively for Jundiaí and Votuporanga. Thermal requirement expressed in degree days for the hybrid growth cycle was 1663 and 1923, respectively for Jundiaí and Votuporanga. Rainfall during the maturation period showed negative correlation with total soluble solids and maturation index and positive correlation with titratable acidity. The effect of temperature on vine growth cycle were more pronounced in Jundiaí in comparison to Votuporanga while the effect of rainfall on the maturation characteristics were more effective in Votuporanga when compared to Jundiaí.

RESUMO A utilização de cultivo protegido em videiras tem aumentado visando diminuir a ocorrência de doenças fúngicas. Assim, realizou-se um experimento com as cultivares Isabel, Isabel Precoce, Bordô e Concord produzidas em safra sequenciais de verão e de inverno, manejadas a céu aberto e sob cobertura de plástico impermeável sem aplicação de fungicidas. Objetivou-se avaliar a severidade das principais doenças fúngicas (míldio, antracnose, mancha-das-folhas e ferrugem) e na desfolha nestas condições. O uso de cobertura plástica, tanto na safra de verão quanto na de inverno, diminui a severidade das principais doenças fúngicas nas cultivares avaliadas e desfolha das videiras. A cultivar Bordô mostrou maior tolerância às doenças fúngicas em relação às outras cultivares. Valores obtidos de produtividade das videiras manejadas sob cultivo protegido foram mais elevados quando comparados ao céu aberto.

ABSTRACT The use of protected cultivation in grapevines has increased with the aim of reducing the occurrence of fungal diseases. Therefore, an experiment was carried out with the cultivars ‘Isabel’, ‘Isabel Precoce’, ‘Bordô’ and ‘Concord’ produced in sequential summer and winter crop seasons and managed in open field and under waterproof plastic cover, without fungicide application. The aim of this study was to verify the severity of the major fungal diseases (downy mildew, anthracnose, leaf spot and grape vine rust) and defoliation under those conditions. The use of plastic cover, during both the summer and the winter crop seasons, reduces the severity of the main fungal diseases and defoliation for the evaluated grapevine cultivars. ‘Bordô’ showed higher tolerance to fungal diseases when compared to the other cultivars. Yield values for vines managed under protected cultivation were higher than those found for vines grown in open field.

ABSTRACT This study evaluated the cycle duration, physicochemical characteristics of fruits and climatic adaptation of the ‘SR 501-17’ hybrid grape grafted on four rootstocks for the production of white wine. We tested four rootstocks, ‘IAC 766 Campinas’, ‘IAC 572 Jales’, ‘IAC 571-6 Jundiaí’ and ‘IAC 313 Tropical’, planted in two climatic regions, Cfa and Aw, in the state of São Paulo, Brazil in the cultivation years 2014 and 2015. Cycle duration, production, cluster weight, number of berries per bunch, content of soluble solids, titratable acidity, a maturation index and the weight, length and width of berries were evaluated. A principal component analysis characterized the cultivar for both climatic regions and years. The rootstock did not influence the cycle, production or physicochemical characteristics of the ‘SR 501-17’ hybrid. The soluble-solid content in the must was higher and the production cycle in 2014 was longer for the Cfa climate. The production cycle was shorter and the weight and width of the berries were lower, mainly in 2015, for the Aw climate. The cycle was thus longer, production was higher and the chemical characteristics were better for the ‘SR 501-17’ hybrid under Cfa conditions, regardless of the rootstock.

ASBTRACT Peach as commercial crop in Brazil is usually grown in open vase training system. However, in the 1970s large orchards changed to the Y-shaped system and higher density of plants. This system is the most used in São Paulo state because it allows orchard densification. However, the longevity of the trees is reduced from 15 to 8 years being the excessive exposure of internal branches to solar radiation the main reason for the reduction. Aiming to offer new alternatives of training system for peach, an experiment was carried out to evaluate the fruiting wall in comparison to Y-shaped, using the cultivar Tropic Beauty budded onto cultivar Okinawa. Ten plants by treatment were used as repetition and microclimatic equipment was installed inside the plant to measure temperature and solar radiation. Values of soluble solids (°Brix) were 9.64 to fruiting wall and 9.59 to Y-shaped, not statistically different. However most of fruit physicochemical characteristics were favorable to the fruiting wall system: fruit weight (g) – 97.56 and 90.44; pulp yield (g) – 92.42 and 85.70; pulp firmness (Kg∙cm–2) – 4.27 and 3.50; titratable acidity (g citric ac.∙100 ml–1) – 0.76 and 0.71; and ratio – 12.79 and 13.58, respectively to fruiting wall and Y-shaped. Solar radiation transmission and maximum daily temperature values for the Y-shaped were higher when compared to fruiting wall at harvest. The obtained data show that the fruiting wall training system could be an alternative to Brazilian’s growers for producing superior fruit quality without yield reduction.

RESUMO O cultivar de uva IAC 138-22 ‘Máximo’, enxertado sobre IAC 766 ‘Campinas’ e IAC 572 ‘Jales’, sustentado em espaldeira, foi avaliado durante safras consecutivas de verão e de inverno, para se comparar diferentes manejos de dossel: desbrota (comparação entre um e dois ramos por esporão) e desponte (comparação de espaldeiras baixa e alta). Os resultados obtidos das características fitotécnicas e físico-químicas do mosto permitiram verificar que não houve diferença significativa entre os porta-enxertos utilizados, em relação à intensidade de desbrota e à altura da espaldeira. O maior efeito observado pelo manejo de dossel foi nos valores de produção, graças à desbrota, não tendo sido observado efeito nas características físico-químicas do mosto, na comparação dos diferentes tratamentos dentro da mesma safra. Em relação à altura da espaldeira, foram obtidos valores de teor de sólidos solúveis, na espaldeira alta, maiores do que com espaldeira baixa. Foram observados, durante a safra de inverno, valores inferiores de produção e superiores de teor de sólidos solúveis e de acidez titulável total, em relação aos da safra de verão.

ABSTRACT Grape cultivar IAC 138-22 'Máximo' grafted on IAC 766 ‘Campinas’ and IAC 572 ‘Jales’ rootstocks and trained in upright trellis was evaluated during consecutive summer and winter growing seasons for comparison different canopy management: a) branch thinning: comparison between one branch and two branches per spur and b) branch tipping: comparison between low and high upright trellis. The results obtained of the phytotechnical and physicochemical grape must characteristics allowed to confirm that there was no significant difference between rootstocks regarding branch thinning intensity and upright trellis height. The largest effect observed in canopy management was for yield values promoted by branch thinning. No effect was observed in the grape must physicochemical characteristics when the different treatments were compared in the same growing season. Regarding to the upright trellis height, larger values of soluble solids were obtained for the high trellis than in the low trellis. Winter growing season resulted in lower values of yield and greater values of total soluble solids and titratable acidity than in the summer growing season.

Resumo O crescimento das atividades do turismo rural tem levado os viticultores a utilizarem diferentes cultivares de uva para elaboração de vinho e/ou suco. Nesse sentido, objetivou-se avaliar as características fitotécnicas das videiras e físico-químicas do mosto das cultivares Bordô, Isabel Precoce, BRS Violeta, Isabel e Concord, em diferentes sistemas de sustentação: espaldeira; manjedoura na forma de Y e manjedoura na forma de V com cordão esporonado duplo. O delineamento experimental foi em blocos ao acaso para a comparação das cultivares, dentro de cada sistema de sustentação, e foi realizada análise dos componentes principais para as variáveis da produção. A cultivar BRS Violeta apresentou maior massa de cacho, independentemente do sistema de sustentação das videiras. A cultivar Bordô foi a menos produtiva e com menor teor de sólidos solúveis, em comparação com as outras cultivares. As cultivares Isabel e Isabel Precoce, nos sistemas de sustentação avaliados, apresentaram maior teor de sólidos solúveis. A análise de componentes principais permitiu verificar que os sistemas manjedoura na forma de Y e V com cordão esporonado duplo foram associados a maiores produtividades.

Abstract The increase of rural tourism activities has led growers to use different grape cultivars for the production of wine and/or juice. Thus, the aim of this study was to evaluate the phytotechnical characteristics of grapevines and physicochemical characteristics of grape must obtained for Bordô, Isabel Precoce, BRS Violeta, Isabel and Concord cultivars in different training systems: vertical shoot position; Y-shaped trellis and V-shaped trellis with double spur cordon. The experimental design was randomized blocks for comparison of cultivars within each training system and analysis of the main components for productivity variables was carried out. BRS Violeta cultivar showed higher bunch weight values regardless of training system. Bordô cultivar showed lower yield values and soluble solids content in comparison to other cultivars. Isabel and Isabel Precoce cultivars in the evaluated training systems showed higher soluble solids content. Principal component analysis allowed verifying that in Y-shaped trellis and V-shaped trellis with double spur cordon training systems, cultivars were related to higher yield.

RESUMO: A doença de Petri é complexa, ataca plantas jovens de videira e é difícil de ser controlada. O fungo Phaeomoniella chlamydospora é o principal agente causal dessa doença. Os objetivos deste estudo foram: avaliar o local prevalente dos fungos da doença de Petri, em diferentes partes de plantas de videira; avaliar a suscetibilidade de porta-enxertos de videira para o fungo P. chlamydospora; avaliar o efeito da solarização e da biofumigação seguido de tratamento com água quente sobre a desinfecção de estacas do porta-enxerto IAC 766 infectadas com o fungo P. chlamydospora; avaliar o efeito da solarização e da biofumigação seguido de tratamento com água quente sobre o enraizamento de estacas do porta-enxerto IAC 766. Para o teste de colonização, as espécies de fungos detectadas e identificadas em Niagara Rosada enxertada em dois porta-enxertos diferentes foram P. chlamydospora e Phialemoniopsis ocularis. Este é o primeiro relato de P. ocularis em parrerais jovens de videira no Brasil. Ambos os fungos, em particular P. chlamydospora, colonizaram somente a parte basal das plantas, destacando-se os porta-enxertos como foco para medidas de controle. Medidas das estrias escuras no sistema vascular revelaram que Golia foi o porta-enxerto menos suscetível, e o IAC 572 foi o mais suscetíveis para P. chlamydospora. Além disso, a biofumigação ou a temperatura de 37ºC aplicadas por 7 e 14 dias seguidas de tratamento com água quente eliminaram P. chlamydospora em estacas do porta-enxerto IAC 766 sem afetar o enraizamento. No entanto, novos estudos são necessários ainda para validar a eficiência dessas técnicas de desinfecção.

ABSTRACT: Petri disease is complex, attacks young vine plants and it is difficult to be controlled. The fungus Phaeomoniella chlamydospora (Phc) has been identified as the main causative agent of this disease. This study aimed to evaluate the prevalent colonization of the Petri disease fungi in different portions of vine plants; to assess the susceptibility of grapevine rootstocks to the fungus P. chlamydospora; to assess the effect of solarization and biofumigation, followed by hot-water treatment (HWT), on the disinfection of cuttings of the rootstock IAC 766 infected with P. chlamydospora, and assess the effect of solarization and biofumigation, followed by HWT, on the rooting of cuttings of the rootstock IAC 766. For the prevalent colonization test, the fungus species detected and identified in ‘Niagara Rosada’ grafted on two rootstocks different were Phc and Phialemoniopsis ocularis. This is the first report of P. ocularis in a young vineyard in Brazil. Both fungi, in particular Phc, colonized only the plant’s basal part, drawing attention to the rootstock as target for control measures. Measurement of the dark streaks in the vascular system revealed that Golia was the least susceptible rootstock, and IAC 572 was the most susceptible to Phc. Moreover, biofumigation or temperature of 37°C applied for 7 and 14 days, both followed by HWT, suppressed Phc in cuttings of the rootstock IAC 766 without hampering their rooting. Meanwhile, new studies are needed to validate the efficiency of these disinfection techniques.

ABSTRACT Plant variables and must physicochemical properties were evaluated for the grapevine ‘Syrah’ cultivated in sequential growing seasons (summer and winter) from 2011 to 2015. The vines were trellised in vertical shoot position, grafted on Paulsen 1103, with approximate density of 5,800 plants∙ha−1. They were grown under plastic overhead cover. The experimental design was completely randomized, and the following variables were measured at the harvest: number of branches, number of clusters, cluster weight and yield, soluble solids content, pH, and titratable acidity. The highest values of yield, cluster weight, and titratable acidity were observed during the summer growing season, while the highest values of soluble solids content and pH were observed during winter. These results suggest that the grapes harvested during the winter show physicochemical characteristics more suitable than those observed during the summer crops for winemaking purposes.

RESUMO Tem sido demostrado que os porta-enxertos podem influenciar as características da uva, no entanto, há poucos dados na literatura sobre o efeito dos porta-enxertos nas características dos vinhos, especialmente quando elaborados com uvas Vitis labrusca ou híbridas. O objetivo do trabalho foi avaliar a influência de porta-enxertos nas características físico-químicas dos mostos e vinhos Bordô, Isabel e IAC 138-22 Máximo. Foram utilizadas uvas ‘Bordô’, ‘Isabel’ e IAC 138-22 ‘Máximo’, enxertadas sobre os porta-enxertos ‘IAC 766’ e ‘106-8 Mgt’. Os mostos foram avaliados pelo pH, sólidos solúveis, acidez total e relação sólidos solúveis/acidez. Nos vinhos, avaliou-se: densidade, teor alcoólico, acidez total, volátil e fixa; pH, extrato seco, açúcares redutores, extrato seco reduzido, álcool em peso/extrato seco reduzido; dióxido de enxofre livre e total; antocianinas, índice de polifenóis (I 280); polifenóis e flavonoides totais e atividade antioxidante. Os mostos das uvas ‘Bordô’, ‘Isabel’ e IAC 138-22 ‘Máximo’ apresentaram baixos teores de sólidos solúveis para vinificação. O porta-enxerto ‘106-8 Mgt’ promoveu maior teor de extrato seco e extrato seco reduzido no vinho Bordô, e menor acidez total e fixa no vinho IAC 138-22 Máximo. No vinho Isabel, maior pH foi promovido pelo porta-enxerto ‘IAC 766’. Com exceção da baixa acidez total do vinho Bordô, todas as características físico-químicas dos vinhos estudados estão de acordo com a legislação brasileira. Não houve efeito dos porta-enxertos nos teores de compostos fenólicos e na atividade antioxidante dos vinhos.

ABSTRACT It has been demonstrated that rootstocks can influence grape characteristics, but there are few data in literature about the rootstocks influence in the wine characteristics, especially in wines elaborated with Vitis labrusca or hybrid grapes. This study evaluated the influence of ‘IAC 766’ and ‘106-8 Mgt’ rootstocks on the physicochemical characteristics of ‘Bordô’, ‘Isabel’ and ‘IAC 138-22 ‘Máximo’ musts and wines. The musts were evaluated for pH, soluble solids, total acidity and soluble solids/acidity ratio. The wines were evaluated for density, alcohol content; total, volatile and fixed acidity; pH, dry extract, reducing sugars, reduced dry extract, alcohol in weight/reduced dry extract; free and total sulfur dioxide; anthocyanins, polyphenols index (I 280); polyphenols and total flavonoids and antioxidant activity. The ‘Bordô’, ‘Isabel’ and IAC 138-22 ‘Máximo’ musts had low soluble solids for winemaking. The ‘106-8 Mgt’ rootstock promoted higher dry extract content and reduced dry extract in Bordô wine, and lower total and fixed acidity in IAC 138-22 Máximo wine. In Isabel wine, higher pH was promoted by the ‘IAC 766’ rootstock. Aside from low total acidity of the Bordô wine, all the physicochemical characteristics of the wines studied are in accordance with Brazilian law. There was no effect of rootstocks in the phenolics content and antioxidant activity of wines.

RESUMO A uva ‘Cabernet Sauvignon’ utilizada para elaboração de vinho tem tido seu plantio incrementado na região vitivinícola de São Roque (SP), sendo o sistema de sustentação mais usual a espaldeira. Recentemente, foi introduzido o sistema de sustentação em manjedoura na forma de Y, portanto foi realizado experimento objetivando caracterizar a produção e as características químicas do mosto da ‘Cabernet Sauvignon’ sustentada em espaldeira e em Y. As avaliações foram feitas durante os anos agrícolas: 2010/2011, 2011/2012 e 2012/2013. As videiras sustentadas em Y apresentaram maiores médias de massa dos cachos e de produtividade quando comparadas às sustentadas em espaldeira. As médias de produtividade estimada variaram entre 9,89 e 13,64 t ha-1 para a espaldeira e entre 13,34 e 17,43 t ha-1 para a manjedoura na forma de Y. Em relação às características químicas do mosto (teor de sólidos solúveis, pH e acidez titulável), não foram observadas diferenças estatísticas entre os sistemas de sustentação das videiras. As médias do teor de sólidos solúveis variaram entre 17,3 e 19,3°Brix, e a acidez titulável total, entre 98 e 143 meq.L-1 para os diferentes anos agrícolas avaliados.

ABSTRACT The grapevine ‘Cabernet Sauvignon’ used for wine purposes is increasing its cultivation in the region of São Roque (State of São Paulo, Brazil) being the vertical shoot position (VSP) system the most usual among the growers. Recently it was introduced the Y training system, therefore a field trial was carried out to characterize yield and chemical characteristics of the must of ‘Cabernet Sauvignon’ grown under different training systems. Evaluations were made during the following growing seasons: 2010/11, 2011/12 and 2012/13. The grapevines trellised on the Y shape showed higher cluster weight and yield when compared to the VSP system. The obtained values of yield varied from 9.89 and 13.64 t ha-1 for the VSP system and from 13.34 and 17.43 t ha-1 for the Y shaped system. Regarding the chemical characteristics of the must (soluble solids, pH and titratable acidity) it was not found statistical differences when comparing the training systems. The obtained values of total soluble solids content varied from 17.3 and 19.3°Brix and titratable acidity from 98 and 143 meq.L-1 for different growing seasons evaluated.

O método do balanço de energia foi utilizado em vinhedo da uva para vinho ‘Cabernet Franc’, conduzido em espaldeira alta, para caracterizar a repartição do saldo de radiação (SR) nos diferentes fluxos de calor: latente (LE), sensível e no solo. Em média LE representou aproximadamente 79% de SR. São apresentadas as variações horárias dos componentes do balanço de energia para dias: ensolarado e nublado. O consumo hídrico do vinhedo para os diferentes subperíodos fenológicos foi: poda-florescimento (99 mm), florescimento-início de maturação (249 mm) e início de maturação-colheita (201 mm). Para o ciclo total (poda-colheita), o consumo hídrico obtido foi de 549 mm.

The energy balance method was used on a ‘Cabernet Franc’ vineyard trained on a vertical trellis system with branches attached to four wires to characterize the partition of the net solar radiation (SR) into the latent (LE), sensible and soil heat fluxes. As an average LE represented 79% of SR. Hourly variation of the energy balance components for sunny and cloudy days are shown. The water consumption for the different phenological phases were: pruning-flowering (99 mm), flowering-veraison (249 mm); veraison-harvest (201 mm). Considering the entire cycle (pruning-harvest) the water consumption was 549 mm.

Nos últimos anos, tem-se observado aumento na produção de uvas destinadas à elaboração de vinhos na região do Circuito das Frutas, Estado de São Paulo, promovido principalmente pelo turismo rural. O objetivo deste trabalho foi caracterizar o potencial climático dessa região para produção de uvas para vinho, utilizando o Sistema de Classificação Climática Multicritérios Geovitícola, baseado nos índices biometeorológicos: heliotérmico, de frio noturno e de seca, considerando as safras de verão e de inverno. Para a safra de verão, foram identificadas áreas com clima quente, úmidas e com noites quentes, situadas na região oeste do Circuito das Frutas; na região centro-leste, as noites foram caracterizadas como temperadas e, nas áreas de altitudes mais elevadas, o clima encontrado foi o temperado quente, sem período seco e com noites temperadas. Para a safra de inverno, os valores de umidade mantiveram-se elevados, com as classes climáticas variando entre quente, temperado quente e temperado, com noites muito frias. O Circuito das Frutas apresentou características que podem favorecer a obtenção de uvas para vinhos brancos e espumantes.

In recent years, it has been seen an increase in the wine grape production in the 'Fruit Circuit region, in the State of São Paulo. It is a region with great attractions associating tourism and wine production. The objective of this study was to evaluate the climatic potential of this region for wine grape production by means of the Multicriteria Climatic Classification System (Geoviticulture MCC System). The MCC System is based on three climatic indexes: heliothermal index, cool night index and dryness index and, it was calculated for the summer and winter growing seasons. During the summer growing season, the MCC System indicated that some areas in western of the region are warm, humid and have warm nights. The east-central area has a temperate night and in areas with higher altitude the climate found was warm temperate, without dry periods and temperate nights. For the winter growing season, the MCC System indicated high moisture values, with climatic classes ranging from hot, warm temperate and temperate. All these classes comprise very cold nights. The 'Fruit Circuit region showed humid condition during both summer and winter growing seasons.

O aquecimento global pode afetar negativamente regiões tradicionalmente vitícolas do globo terrestre. Esse fato indica a necessidade de verificar a presença de alterações nos padrões climáticos em regiões alternativas (ou não tradicionais) para o cultivo de uvas para vinhos finos. Assim, os objetivos desse estudo foram detectar tendências climáticas em séries de temperatura do ar e precipitação pluvial em três localidades da parte leste do estado de São Paulo e avaliar os efeitos dessas alterações em índices agrometeorológicos frequentemente utilizados na indicação de áreas favoráveis à produção de uvas para vinho. As análises de tendência foram aplicadas a séries de temperatura máxima e mínima, a séries de precipitação pluvial e aos seguintes índices, selecionados por serem usualmente utilizados em estudos que abordam o efeito do clima regional sobre a produção de uvas para vinho: heliotérmico, frio noturno e graus-dia. Consideraram-se os aspectos fenológicos em safras de verão e inverno. Os resultados suportam a hipótese de presença de mudanças climáticas na região do estudo, indicando que ela é fundamentalmente relacionada a alterações temporais na temperatura mínima do ar. Observou-se também o encurtamento da duração das fases fenológicas da videira e uma mudança para uma condição de temperatura do ar mais elevada ao longo do período de maturação. Essas alterações climáticas são consistentes com as observadas em outras regiões vitícolas do globo terrestre.

The global warming may put pressure over some world's highest quality wine producing regions. This fact indicates the need to evaluate the presence of climate change in non-traditional wine producing regions of the Globe. Therefore, the goals of this study were to detect trends in rainfall and air temperature series obtained from three locations of the eastern part of the State of São Paulo, Brazil (a non-traditional high quality wine producing region) and to evaluate the effect of the detected climate trends on agrometeorological indices frequently used to indicate suitable areas for wine production. The trend analyses were applied to maximum and minimum air temperature series, rainfall series and to the following agrometeorological parameters: heliothermal index, cool night index and growing degree-days. These three indices were selected due to their previous use in studies that address the effect of regional climate conditions on the general wine style. The analyses took into account the grape phenological aspects for both summer and winter growing seasons. The results found in this study support the hypothesis of the presence of climate trends in the wine producing regions of the eastern part of the State of São Paulo-Brazil. These trends are mostly linked to changes in the minimum air temperature. The results also reveal a shortening in the duration of grapevines phenological phases and a change to warmer conditions during the ripening Months. These changes are consistent with the climate changes observed in other wine producing regions of the world and may negatively affect the wine production of the eastern part of the State of São Paulo.