Antioxidant capacity, color and total polyphenols in Nazareno and Giallo Muscat white wines produced in the São Francisco Valley, Brazil.

One of the most produced and consumed wine from the São Francisco Valley (SFV) is the Muscat sparkling wines. The main varieties used are Italia and Canelli Muscats. Nazareno and Giallo muscat varieties are used in many regions to produce sparkling wines, presenting typical characteristics. In order to evaluate the adaptation potential of these two varieties to the VSF in the Northeast of Brazil, this work aimed to elaborate fine white dry wines by using both cultivars, and the effect of light and temperature on wine stability. Vines were planted in a partner winery in 2014 in Casa Nova city, Bahia state, Brazil. After harvested in March 2016, grapes were sent to Enology Laboratory of Embrapa in Petrolina, and wines were elaborated by traditional method of white grape vinification (Giovannini and Manfroi, 2009). After alcoholic fermentation at 18ºC±2, wines were corrected for 40 mg L-1 of free SO2 and then bottled. Bottles were placed in a box with controlled environment (35ºC temperature and light with length wave at 280nm), and wines were evaluated 6 days after (Garcia-Falcon et al., 2007)

Diferentes concentrações de zinco no desenvolvimento de plantas de Phaseolus vulgaris L.

Objetivou-se com este estudo avaliar os efeitos da aplicação de solução nutritiva com concentrações crescentes de zinco (Zn) no desenvolvimento inicial e no teor de pigmentos de plantas de feijão cultivadas em condições de casa de vegetação. O experimento foi desenvolvido no Laboratório de Nutrição de Plantas (LNP) e em casa de vegetação pertencentes ao Departamento de Botânica da Universidade Federal de Pelotas (UFPel). A semeadura foi realizada em vasos preenchidos com areia média lavada. Sete dias após a emergência das plântulas foi aplicada, com intervalos de dois dias, solução nutritiva com quatro concentrações crescentes de Zn (2, 50, 75 e 100 µM), dispostas em um delineamento experimental inteiramente casualizado com quatro repetições, sendo cada uma delas composta por seis plantas. Aos 45 dias após a emergência das plântulas, avaliaram-se as seguintes variáveis: altura das plantas, diâmetro do caule, número de folhas, área foliar e comprimento de raiz, além do índice de pigmentos fotossintéticos. Com o aumento das concentrações de Zn verificou-se decréscimo significativo para as variáveis diâmetro do caule e comprimento de raiz, sugerindo que maiores concentrações de Zn podem influenciar negativamente no desenvolvimento das plantas de feijão. Os índices de clorofila e flavonoides apresentaram elevação com o aumento das doses de Zn. Esse efeito possivelmente está relacionado a uma reação estratégica da espécie, que visa minimizar o efeito tóxico das concentrações crescentes de Zn no desenvolvimento das plantas. Palavras-chave: Feijão. Micronutriente. Pigmentos foliares. Toxicidade

Evaluation of physicochemical characteristics of ?Chenin Blanc? wines in two vintages produced in the São Francisco Valley, Brazil.

The predominant grapes in the São Francisco Valley (SFV) are from European origin (Vitis Vinífera L.). According to Pereira (2011) the tropical viticulture developed in this region differs from the traditional areas due to the capacity of a vine to produce more than one crop per year. Chenin Blanc is one of the main cultivar used to elaborate white wines, presenting a good adaptation to the soils and climatic conditions of the SFV area, and typical characteristics in the region. Climate changes according to the years and can influence wine characteristics (PEYNAUD, 1997). In this way, to evaluate effects of different vintages on physical-chemical characteristics of Chenin Blanc white tropical wines from SFV, this study was carried out. Wines used in this study were laborated by traditional process to obtain dry white wines (PEYNAUD, 1997), at Embrapa Semi-arid, evaluating two seasons, the first one in July 2014 and the second one in September 2015. Vines were planted in a partner winery, cultivated in pergola, grafted onto IAC 572, and drip irrigated, in Santa Maria da Boa Vista, Pernambuco state, Brazil

Enological potential of 'Pinot Noir' grape and wine from a tropical climate, in the Chapada Diamantina - BA, Brazil.

Tropical viticulture, although relatively new, has achieved significant technological developments in Brazil, making possible cultivation of vines in areas beyond standard traditional winegrowing areas worldwide. Techniques such as irrigation, the use of growth hormones in vines and production control at different times during the year, are being applied in other regions of Northeast Brazil for the production of wines. Some varieties express the best of their viticultural and enological potential in a given ecosystem, and Pinot Noir variety is very difficult to produce because presents a high susceptibility to fungal diseases (Reynier, 2007)

BRSIPR Bel: cultivar de batata para chips com tubérculos de boa aparência.

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Responses of Solanum tuberosum L. to Water Deficit by Matric or Osmotic Induction.

Toselectpotatogenotypestoleranttowaterdeficit,systemstosimulatethisstresshavebeen used. Polyethylene glycol (PEG) is the main osmotic agent used for this purpose, but it causes an excessively severe stress. However, it is difficult to carry out an experiment that aims to compare plant responses under water deficit by osmotic or matric induction, and, thus,fewstudiescomparethesestress-inducingmechanisms.Therefore,theobjectiveofthis studywas to compare the responses of Agata, BRS Clara,C2406-03andCota genotypes to water deficit in both induction methods (matric or osmotic). The tests were carried out in a greenhouse, one using hydroponics (osmotic induction) and the other in pots with soil (matric induction). In both tests, the application of stressful conditions occurred at the beginning of tuberization. Assessments of gas exchange and shoot temperature were made throughout the exposure to stress. Also, samples were collected from leaves for analysis of osmotic potential and leaves and tubers for analysis of metabolite content. At the end of the potatoplantcycle,thenumberandweightoftuberswereevaluated.Inbothstressconditions, there were significant reductions in photosynthesis and transpiration rate compared to the respective normal hydration conditions. In addition, indicators such as metabolite levels (proline and soluble sugars) were significantly altered in plants exposed to different stress inductions. These data, together with the significant limitations in the growth of stressed plants, indicate that the experimental models induce similar responses. However, the water deficit by osmotic induction was more severe for the potato plants when compared to stress due to matric induction, mainly affecting tuber production. Therefore, the water deficit osmotic induction model can be recommended for phenotyping tolerance to this stress, due to the hydroponic system inducing greater tuber production per plant under optimal cultivation conditions