Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-04T12:33:17Z No. of bitstreams: 1 2016 - V?vian Palheta da Rocha 2016.pdf: 925358 bytes, checksum: 56f81d180a908791a6be805b35fee76f (MD5) / Made available in DSpace on 2017-04-04T12:33:17Z (GMT). No. of bitstreams: 1 2016 - V?vian Palheta da Rocha 2016.pdf: 925358 bytes, checksum: 56f81d180a908791a6be805b35fee76f (MD5) Previous issue date: 2016-03-14 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The crambe (Crambe abyssinicaHochst) has been cultivated because of its potential in the production of oil in its seeds, as fodder plant, among other uses. For this species, the high oil content affects the storage potential of seeds and associated with factors such as the pericarp, low availability of water in the soil can provide uneven germination. So, to reduce the nega-tive effects of the factors thatinterfere with crambe seed germination, it can be through the use of priming techniques. The objective of this research was to evaluate the efficiency of priming techniques in physiological quality of crambe seeds stored under controlled condi-tions. Therefore, the experiment was conducted in 2015 to 2016 period for crambe, classified seeds were used, treated, packed in paper bags krafts. After zero, three and six months of stor-age, the seeds were submitted to physiological primingtechniques, using the unmonitored hydration techniques (immersion in water), matriosmopriming with PEG 6000 -0.2 MPa, moist atmosphere and matripriming. Unconditioned seeds were used as control. The seeds were evaluated after drying by germination and vigor (first count, seedling performance, seedling emergence and electrical conductivity). From the results it can be concluded that the seeds subjected to matriosmoprimingand matriprimingpresent approximately 40% water content after 8 hours of imbibition. There was favoring the germination of seeds and dry mass of lot 1 after they have been submitted to matriosmoprimingat 0, three and six months. There was an increase of germination rate of seeds lot 3 which were submitted to matriprimingthe three and six months of storage. / O crambe (Crambe abyssinica Hochst) tem sido cultivado devido ao seu potencial na produ??o de ?leo em suas sementes e, como planta forrageira, entre outros usos. Para esta esp?cie, o alto teor de ?leo prejudica o potencial de armazenamento de suas sementes, assim como o uso de sementes com a presen?a do pericarpo do fruto no momento da semeadura ea baixa dispo-nibilidade de ?gua no solo podem proporcionar germina??o desuniforme. Para reduzir os efeitos negativos dos fatores que interferem no desempenho de sementes de crambe, pode ser em-pregado o condicionamento fisiol?gico das sementes. Assim, o objetivo desta pesquisa foi avaliar a efici?ncia de diferentes t?cnicas de condicionamento fisiol?gico na qualidade fisio-l?gica das sementes de crambe armazenadas em condi??es controladas. Para tanto, o experi-mento foi realizado no per?odo de 2015 a 2016. Sementes classificadas, tratadas e acondicio-nadas em sacos de papel foram avaliadas ap?s zero, tr?s e seis meses de armazenamento. As sementes foram submetidas ?s t?cnicas de hidrata??o n?o monitorada (imers?o em ?gua), matriosmocondicionamento com PEG 6000 a -0,2 MPa, atmosfera ?mida e matricondicionamento. Sementes n?o condicionadas foram utilizadas como controle. As sementes foram avaliadas ap?s secagem pelos testes de germina??o e vigor (primeira contagem, desempenho de pl?ntulas, emerg?ncia de pl?ntulas e condutividade el?trica). Pelos resultados, pode-se concluir que as sementes submetidas ao matriosmocondicionamento e ao matricondicionamento apresen-tam em torno de 40% de teor de ?gua ap?s 8 horas de embebi??o. Houve favorecimento da germina??o das sementes e da massa seca das pl?ntulas do lote 1 ap?s terem sido submetidas ao matriosmocondicionamento, aos zero , tr?s e seis meses. O matricondicionamento favoreceu a velocidade de germina??o das sementes do lote 3, aos tr?s e seis meses de armazenamento.

Made available in DSpace on 2017-07-10T17:37:31Z (GMT). No. of bitstreams: 1 Celso_Ari_Palagi.pdf: 1225111 bytes, checksum: 53c7b584eb8d2e2e9d1d9affdfb76833 (MD5) Previous issue date: 2004-03-29 / The culture of the Soya has great economic importance in the Brazilian agricultural scenery, from being that the production of seeds significantly to contribute importance with this process. Methods and tests of quality estimate of the seeds really have been showing their potential are avail large so, this work had purpose to seek a alternative methodology capable of to minimize the harm soak up during the realization the tests of the seeds germination standard. For so much, seeds coming from three places of production from South Brazil area, harvested the agricultural bearing 2001/02, of the cultivars CD 201, CD 202 and CD 210 were rated via middle of the tests: first couting of germination, tests germination standard of, percentile of plantule abnormal, tetrazolium germination, tetrazolium worth and emergency on soil flooring. The tests were done on two ages; the first on three months after harvest and the second on six months after harvest. On all tests parts of the seeds were pre-soaking prior of the realization of the same, the other party did follow the traditional methodology. The pre-soaking constituted in the setting of the seeds on ductile boxes (gerbox). On the screen steely inox containing 40 fl Oz milligram water, during a period of 24h the 25ºC, on camera of germination of type Mangelsdorf. After this period the seeds were analyzed in the diverse tests, according the prescribed in the Rules Parsing of Seeds. The sowing in the soil, for the evaluation of the emergency, went executing on hothouse covered with transparent sailcloth ductile like a tunnel. The contour experimental utilized was casually with four iterations. The Work were unfolded on two experiments conform origin the seeds; in the first went compared with the cultivars CD 201 and CD 202 and in the second analyzed only the CD 210. The results were, then, submitted to statistical parsing firstly, individually within on each epoch of evaluation on each place, and subsequent to proceeded the parsing conjoint considering two ages and the three places. The procured results permit to make conclusion that the results pre-soaking introduced 6% TPG seeds, only to the cultivar CD 202. To the three places, if nothing else one of the ages of realization tests. The responses positive of the pre-soaking of the seeds of cultivar CD 202 is compatible with the procured results in the test of tetrazolium/viability (1-5) e of emergency on soil. / A cultura da soja tem grande importância econômica no cenário agrícola brasileiro, sendo que a produção de sementes contribui significativamente com este processo. Métodos e testes de avaliação da qualidade das sementes que realmente expressem o seu potencial são de grande valia. Esta pesquisa teve por objetivo buscar uma metodologia alternativa capaz de minimizar os danos de embebição durante a realização do teste padrão de germinação das sementes. Para tanto, sementes provenientes de três locais de produção da região sul do Brasil, colhidas na safra agrícola 2001/02, dos cultivares CD 201, CD 202 e CD 210 foram avaliadas por meio dos testes: primeira contagem de germinação, teste padrão de germinação, percentual de plântulas anormais, tetrazólio germinação, tetrazólio vigor e emergência em solo. Os testes foram realizados em duas épocas; a primeira, três meses após a colheita (3 MAC) e a segunda, seis meses após a colheita (6 MAC). Em todos os testes subamostras das sementes foram pré-embebidas antes da realização dos mesmos e, a outra parte seguiu a metodologia tradicional. A pré-embebição consistiu na colocação das sementes em caixas plásticas sobre tela de aço inox, contendo 40 mL de água, por um período de 24h a 25oC, em câmara de germinação do tipo Mangelsdorf. As sementes foram analisadas nos diversos testes, conforme o prescrito nas Regras para Análise de Sementes. A semeadura no solo, para a avaliação da emergência, foi realizada em estufa coberta com lona plástica transparente - tipo túnel. O delineamento experimental utilizado foi o inteiramente casualizado com quatro repetições. O trabalho foi desdobrado em dois segmentos conforme a procedência das sementes; no primeiro foram comparados os cultivares CD 201 e CD 202 e no segundo analisou-se somente o CD 210. Os resultados foram, então, submetidos à análise estatística primeiramente, individual por época de avaliação em cada local, e posteriormente procedeu-se à análise conjunta considerando as duas épocas e os três locais. Os resultados obtidos permitiram concluir que a pré-embebição apresentou resultados superiores a 6% no TPG para as sementes do cultivar CD 202 dos três locais, em pelo menos uma das épocas de realização dos testes. A resposta positiva à pré-embebição das sementes do cultivar CD 202 é compatível com os resultados obtidos no teste de tetrazólio/viabilidade (1-5) e de emergência em solo. O cultivar CD 210 apresentou resultados significativos à pré-embebição nos testes de primeira contagem de germinação e TPG, somente para as sementes de Campo Mourão e Cascavel.

The CdTe solar cell is a leading candidate for cost-effective thin-film solar cells having demonstrated small area cell effciencies of 16.4%. A Key issue associated with CdTe thin film photovoltaic modules is the analysis of degradation behavior of the device. The analysis is complicated as changes due to degradation may be reversible. Solar cell measurement techniques were used to understand the changes in device parameters after light soaking for 1000 hours. An automated measurement setup was implemented as part of this thesis work. The main objective of this thesis was to study the effect of CdCl2 heat treatment on the device stability. The temperature for this heat treatment was varied from 360oC to 400oC. Cells were stressed under illumination at both short circuit and open circuit conditions. It was found that the increase CdCl2 heat treatment temperature slowed down the degradation rate.This was true for both short and open circuit stress conditions. Also short circuit stress condition slowed down the degradation of the device when compared with the open circuit condition. It became evident that the recombination current mainly got affected when the device was said to be degraded.

Soaking is an important unit operation during the processing of seeds used for direct consumption. The change in seed volume over time during soaking (volume kinetics) relates to water uptake and the quality of final product, and affects the design of the entire processing operation. Since volume determination is labor-intensive and time consuming, volume kinetics is usually not well monitored throughout seed hydration. The first chapter of this thesis is a review on the importance of soaking and volume kinetics monitoring during seed processing, the factors affecting hydration in seeds, current volume measurement methods and models used to determine and describe the change in volume over time in seeds during soaking. The second chapter describes the design, construction and evaluation of a bean volumetric auto tester (B-VAT) for volume kinetics determination of seeds during soaking. Evaluation tests suggested the system can generate reliable, reproducible, and detailed volume kinetics results for seeds soaking at different conditions with limited labor requirements. In the third chapter, the volume kinetics of 6 pinto, 5 navy and 3 black bean cultivars were tested during soaking at 25 ºC and 55 ºC. Significant differences were observed among varieties and cultivars at both temperatures (p<0.01). As temperature increased, the hydration efficiency were enhanced for all cultivars, but with various degree. In the fourth chapter, we tested the hypothesis that a thin hydrophobic layer on the seed coat was responsible of the extended initial lag phase observed during the soaking of pinto beans. Hexane pre-treatment before soaking were used for all cultivars and contact angle measurement were done to determine the surface hydrophobicity of the beans. Good correlations were found between surface hydrophobicity and hydration efficiency of beans. Hexane effectively reduced the hydrophobicity of bean surface and improved the hydration efficiency of pinto beans. The fifth chapter covers the overall conclusion of this study and states recommendations of future work regarding the improvement of the developed system and further exploration of the bean hydration process.

Soaking is an important unit operation during the processing of seeds used for direct consumption. The change in seed volume over time during soaking (volume kinetics) relates to water uptake and the quality of final product, and affects the design of the entire processing operation. Since volume determination is labor-intensive and time consuming, volume kinetics is usually not well monitored throughout seed hydration. The first chapter of this thesis is a review on the importance of soaking and volume kinetics monitoring during seed processing, the factors affecting hydration in seeds, current volume measurement methods and models used to determine and describe the change in volume over time in seeds during soaking. The second chapter describes the design, construction and evaluation of a bean volumetric auto tester (B-VAT) for volume kinetics determination of seeds during soaking. Evaluation tests suggested the system can generate reliable, reproducible, and detailed volume kinetics results for seeds soaking at different conditions with limited labor requirements. In the third chapter, the volume kinetics of 6 pinto, 5 navy and 3 black bean cultivars were tested during soaking at 25 ºC and 55 ºC. Significant differences were observed among varieties and cultivars at both temperatures (p<0.01). As temperature increased, the hydration efficiency were enhanced for all cultivars, but with various degree. In the fourth chapter, we tested the hypothesis that a thin hydrophobic layer on the seed coat was responsible of the extended initial lag phase observed during the soaking of pinto beans. Hexane pre-treatment before soaking were used for all cultivars and contact angle measurement were done to determine the surface hydrophobicity of the beans. Good correlations were found between surface hydrophobicity and hydration efficiency of beans. Hexane effectively reduced the hydrophobicity of bean surface and improved the hydration efficiency of pinto beans. The fifth chapter covers the overall conclusion of this study and states recommendations of future work regarding the improvement of the developed system and further exploration of the bean hydration process.

Solar energy is one of the abundant, non-polluting renewable energy options in our planet. During the last three decades considerable progress has been achieved in developing technologies to produce electricity from solar radiation, but producing electricity with low cost and low pollution is of concern. The CdTe solar cells are the leading source for the production of cost effective solar cells. The main issue of concern in these CdTe solar cells is degradation observed when stressed at elevated temperatures. The degradation in CdTe solar cells can be attributed to the back contact, which often contains Cu to improve the electronic properties of CdTe (absorber layer) and to enable a quasi ohmic back contact.The main objective of this thesis was to study effect of amount of Cu in the back contact and contact annealing temperature on device stability.

Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniversitet, 2008. / Härtill 4 uppsatser.

Made available in DSpace on 2016-08-31T13:29:06Z (GMT). No. of bitstreams: 1 AcimoneMSA_DISSERT.pdf: 1000865 bytes, checksum: adc29e87f8d66079920dea1c1b7c4dc4 (MD5) Previous issue date: 2014-04-30 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The Senegalia tenuifolia species is part of the native vegetation of the northeastern semiarid, belonging to the family of Fabaceae (Mimosoideae) is commonly known as cat's claw, saw throat or Calumbi. The objective of this research was to characterize the seed and germination potential of the species. For the characterization of seed, held biometrics using a random sample of 100 and 10 0 seeds and fruits were evaluated: weight, l ength, width and thickness of fruits and seeds , and the number of seeds pro fruit. Monitoring the imbibition curve with the ends removed and intact seeds were performed in the opposite region to the embryonic axis. Witness, lopping , scarification with sandpaper, soaking fo r 12, 24 and 48 hours hot water: The assessment of seed germination, twelve pre-germination treatments to evaluate seed dormancy and germination rate with the following treatments were evaluated 80°C for 3, 6 and 12 minutes and sulfuric acid for 3, 6 and 12 minutes. The seeds were germinated on paper germitest under BOD chamber. The germination was also assessed to test the effect of substrate temperature on germination resulting from the combination of the substrates on paper, on sand and vermiculite paper roll and under three temperatures: 25°C, 30 °C and 35°C in a factorial 4x3. In biometrics, a descriptive analysis of the data was performed by frequency, maximum and minimum, standard deviation and range. The design for the pre -germination treatments and germination test was used completely randomized design with four replications of 25 seeds each. Data were submitted to analysis of variance and the treatment means were compared by Tukey test at 5% probability. The biometric analyzes showed low variation for both fruits and seeds to. The curve of water uptake by seeds presented triphasic model with stage III occurring in the 21st minute soaking. For pre-germinative seed treatments Calumbi the cutting in the opposite embryonic axis sandpaper and sulfuric acid for 3 minutes, with values of 97, 91 and 88%, respectively region. To calculate the index of germination speed that got the best result was sulfuric acid for 6 minutes with a value of 17.7. A temperature of 25 to 30ºC, regardless of the substrate used, was the most suitable for germination in seeds of Senegalia tenuifolia / A espécie Senegalia tenuifolia faz parte da vegetação nativa do semiárido nordestino, pertencente à família das Fabaceae (mimosoideae) é vulgarmente conhecida como unha de gato, serra goela ou calumbí. O objetivo desta pesquisa foi caracterizar as sementes e o potencial germinativo da espécie. Para a caracterização física das sementes, realizou-se a biometria utilizando uma amostra aleatória de 100 frutos e 100 sementes e foram avaliados: peso, comprimento, largura e espessura de frutos e sementes, além do número de sementes por fruto. Foi realizado o monitoramento da curva de embebição com sementes intactas e despontadas na região oposta ao eixo embrionário. Para avaliação do potencial germinativo das sementes, foram utilizados doze tratamentos pré-germinativos para avaliar a dormência das sementes e velocidade de germinação com os seguintes tratamentos: testemunha, desponte, escarificação com lixa, embebição por 12, 24 e 48 horas, água quente a 80ºC por 3, 6 e 12 minutos e ácido sulfúrico por 3,6 e 12 minutos. As sementes foram colocadas para germinar em papel germitest em câmara B.O.D a temperatura de 30ºC. O processo germinativo também foi avaliado para testar o efeito da temperatura e substrato na germinação resultante da combinação de quatro substratos: sobre papel, sobre areia, rolo de papel e vermiculita e sob três temperaturas: 25°C, 30°C e 35°C, em esquema fatorial 4x3. Na biometria foi realiz ado a análise descritiva dos dados através da freqüência, máxima e mínima, desvio padrão e amplitude. O delineamento para os tratamentos pré-germinativos e teste de germinação foi utilizado o delineamento inteiramente casualizado com quatro repetições de 25 sementes cada. Os dados foram submetidos a análise de variância e as médias dos tratamentos foram comparadas pelo teste Tukey a 5% de probabilidade. As análises biométricas apresentaram baixa variação tanto para frutos como para as sementes. A curva de absorção de água nas sementes despontadas apresentou modelo trifásico com a fase III ocorrendo a 21 hora de embebição. Para os tratamentos pré-germinativos em sementes de calumbi o desponte na região oposta ao eixo embrionário, lixa e ácido sulfúrico por 3 minutos, apresentando valores de 97; 91 e 88%, respectivamente. Para o cálculo de índice de velocidade de germinação o que obteve melhor resultado foi o ácido sulfúrico por 6 minutos com valor de 17,7. As temperaturas de 25 e 30ºC, independente do substrato utilizado, foram as mais adequadas para teste de germinação em sementes de Senegalia tenuifolia

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química / Made available in DSpace on 2012-10-22T09:23:56Z (GMT). No. of bitstreams: 0 / Quando se trata da qualidade de seus produtos e da adequação destes às especificações de seus clientes, as empresas empregam e investem muito no controle de qualidade e melhoria contínua do processo. Neste contexto é que se encontra o teste de Edge Soaking, cujo objetivo é reproduzir em laboratório a absorção de água que ocorre nas bordas do cartão durante o envase. Este teste é realizado exclusivamente em cartões utilizados em embalagem de alimentos líquidos ou pastosos (LPB - Liquid Package Board). O método atualmente utilizado pela Klabin para determinação do Edge Soaking tem se mostrado pouco repetitivo e percebem-se variações significativas quando realizado por operadores diferentes. Desta forma, este trabalho teve como objetivo adequar e padronizar o teste de Edge Soaking visando sua utilização para controle de processo. A partir da avaliação do método existente, determinaram-se algumas variáveis que podem ser controladas para minimizar as variações de resultado, tais como: perfil de amostragem, temperatura e volume de água de cada banho e tempo de imersão das amostras. Além disso, foi desenvolvido um suporte específico para este teste visando auxiliar sua execução. Resultados dos testes realizados indicaram maior uniformidade e confiabilidade a cada etapa do desenvolvimento do suporte. O desvio padrão encontrado para a metodologia desenvolvida ainda indica que existe um erro sistemático, mas este é inferior ao erro do método atual. Durante o estudo foram avaliados diferentes tipos de cartões e diferentes gramaturas e concluiu-se que além da cura da cola, a gramatura do papel e a distribuição da cola são fatores que exercem influência na absorção de água. When the topic is about the quality of its products and of the adequacy of these to the specifications of its customers, the companies use and invests in the quality control and continuous improvement of the process. In this context is the test of Edge Soaking, whose objective is to reproduce in laboratory the water absorption that occurs in the edges of the card in the filling machine. This test is carried through exclusively in cartons used in liquid or gummy food packing (LPB - Liquid Package Board). The method currently used by Klabin for determination of the Edge Soaking has shown little repetitive and notices significant variations when carried through by different operators. In this form, this work had as objective to adjust and to standardize the test of Edge Soaking to be used to control the process. For the evaluation of the existing method, some variable had been determined to be controlled and to minimize the result variations: profile of sampling, temperature and volume of water of each bath and time of immersion of the samples. In addition, a specific support for this test was developed to simply its execution. Results of the tests had indicated more uniformity and more trustworthiness to each stage of the development of the support. The standard deviation found for the developed methodology still indicates that exist a systematic error, but this is smaller than the error of the current method. During the study different types of cartons and different basis weigh had been evaluated and concluded that beyond the cure of the glue, the basis weigh and the glue are factors that exert influence in the water absorption.

Submitted by JOEL CABRAL DOS SANTOS null (agronomojoel@gmail.com) on 2016-04-20T17:12:51Z No. of bitstreams: 1 DISSERTAÇÃO JOEL CABRAL DOS SANTOS.pdf: 1004061 bytes, checksum: 9bc65d670d521d3e3992bccf48e3364c (MD5) / Approved for entry into archive by Felipe Augusto Arakaki (arakaki@reitoria.unesp.br) on 2016-04-26T15:01:17Z (GMT) No. of bitstreams: 1 santos_jc_me_jabo.pdf: 1004061 bytes, checksum: 9bc65d670d521d3e3992bccf48e3364c (MD5) / Made available in DSpace on 2016-04-26T15:01:17Z (GMT). No. of bitstreams: 1 santos_jc_me_jabo.pdf: 1004061 bytes, checksum: 9bc65d670d521d3e3992bccf48e3364c (MD5) Previous issue date: 2016-02-26 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O déficit hídrico está entre as principais restrições para o cultivo de espécies de interesse agrícola, pois este fenômeno ocasiona diminuição no crescimento e produtividade das plantas. O condicionamento fisiológico de sementes surge como uma técnica que pode induzir à tolerância das plantas a diversos estresses abióticos. Desta forma objetivou-se com este trabalho pré-tratar sementes de tomateiro com diferentes qualidades de luz para indução da tolerâncias ao déficit hídrico. Para isto foram realizados três experimentos, nos quais sementes de tomateiro foram embebidas em água destilada sob os comprimentos de onda do vermelho, vermelho extremo, verde e azul por 10 ou 20 horas (experimento I e II, respectivamente) decorrido o tempo de embebição as sementes foram colocadas para secar sob os mesmo comprimento de onda durante 48 horas. No experimento III, sementes também foram colocadas para embeber durante 20 horas, após 10 horas de embebição as sementes foram exposta a luz UV-B ou branca por um período de 0, 1, 2, 3 e 4 horas, seguido de privação da luz. Após o período de embebição, foram postas para secar na ausência da luz por 48 horas. Para as análises de germinação e crescimento, sementes foram colocadas para germinar em caixas tipo gerbox contendo 2 folhas de papel de filtro umedecidas com 20 mL de água ou solução com potencial osmótico de -0,1 MPa, induzido com polietilenoglicol. O baixo potencial osmótico da condição estressora reduziu os valores da maioria das variáveis aqui estudadas. O tratamento com luz vermelha durante 20 horas melhorou o TMG e IVG das sementes de tomateiro. O pré tratamento com luz branca e UV-B durante 0, 1, 2, 3 e 4 horas melhoram a porcentagem de germinação, TMG e IVG da sementes de tomateiro sob déficit hídrico. Com isto, chegou-se a conclusão que o pré-tratamento com luz vermelha durante 20 horas, o pré-tratamento com luz branca, UV-B ou hidrocondicionamento de sementes de tomateiro pode induzir a tolerância ao déficit hídrico. / The water deficit is among the main constraints for the cultivation of species of agricultural interest, because this phenomenon promotes decreases in the growth and productivity of crops. The physiological conditioning of seeds arises as a technic that can induce the plant tolerance to many abiotic stresses. In this context aimed to evaluate in this work pre-treat tomato seeds with different qualities of light to induce the water deficit tolerances. For that, were realized three experiments which tomato seeds were imbibed in distilled water under wavelengths red, extreme red, green and blue for 10 or 20 hours (experiment I and II, respectively). After imbibition period the seeds were put to dry under the same wavelength during 48 hours. In the experiment III, seeds were put to imbibition during 20 hours also, after 10 hours of imbibition the seeds were exposed to UV-B light or white for a period of 0, 1, 2, 3 and 4 hours, followed by light privation. After the imbibition period, were put to dry in the absence of light for 48 hours. For analysis of germination and growth, the seeds were put to germinate in gerbox recipients containing 2 leaves of filter paper moistened with 20 ml of water or solution with osmotic potential of -0,1 MPa, induced by polyethylene glycol. The low osmotic potential of stress condition decreased the values of most of the analyzed variables in this paper. The treatment with red light during 20 hours improved TMG and IVG of tomato seeds. The pre-treatment with white light and UV-B during 0, 1, 2, 3 and 4 hours improved the germination percentage, TMG and IVG of tomato seeds under water deficit. So, we concluded that pre-treatment with red light during 20 hours, the pre-treatment with white light, UV-B or hydropriming of tomato seeds can induce water deficit tolerance.