657 resultados para Teste de estresse


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In this study, we aimed to evaluate the effect of five drying systems on the quality of crambe seed and the influence of the pericarp in its electrical conductivity. The experimental design adopted was randomized blocks with four replications. The following drying methods were applied: drying in the field, on the patio, under shade, with heated air, and non-heated air. To evaluate the electrical conductivity and the fat acidity, the seeds, from the cultivar FMS Brilhante, were analyzed with and without pericarp. . An analysis of variance was performed and the means were compared by Tukey test (p≤0,05). We also performed the Pearson linear correlation between electrical conductivity and fat acidity in order to evaluate the pericarp influence. The 4 drying system using shades cause less damage to the seeds; and the presence of pericarp decreased the sensitivity of the electrical conductivity

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Two experiments were conducted in order to study the effects of seed number, temperature and time of soaking sesame seeds on the results of the electrical conductivity test for physiological quality of seeds. In the experiment I evaluated the electrical conductivity varying the number of seeds (25, 50 and 100) and temperature (20, 25 and 30° C) in experiment II is different soaking periods (2, 4, 6, 8, 12, 16, 20 and 24 h). The tests were performed with three cultivars (cv. Trebol, cv. Cnpa G4 e cv. Comum). The treatments in factorial 3x3x3 and 3x8 in experiments I and II, respectively. The experimental design was completely randomized, with four replications. Means were compared by Tukey test at 5% probability. The characterization of cultivars held through the germination and vigor tests (physical, physiological and biochemical), which rated the Trebol cultivar seeds with better physiological then the Cnpa G4 and Comum. The electrical conductivity test was conducted with four sub-samples of 25 pure seeds soaked in 75 mL of deionized water at 25° C, to separate the lots from 2 hours of soaking, being feasible to evaluate the quality sesame seeds.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Fundação de Apoio à Pesquisa do Estado de São Paulo (FAPESP)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Alimentos e Nutrição - FCFAR

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Pós-graduação em Ciência e Tecnologia Animal - FEIS

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)