-Castor bean cropping has great social and economic value, but its production has been affected by factors such as low quality seeds used for sowing. The quick and precise evaluation of seed quality by x-ray test is known as an effective method to evaluate seed lots, but little is known about the interpretation between of the type of radiographic image and the seed quality correlation. The potential of x-ray analysis as a marker of seed physiological quality and as an initial process for the implementation of the use of computer-assisted image analysis was investigated using castor bean seeds of the different cultivars. The seeds were classified according to internal morphology visualized in the radiography and subjected to the germination test, emergency and seedling growth rate. It was possible to identify the different types of internal tissues, morphological and physical damage in castor bean seeds using the x-ray test. Tissues generating translucent images, embryo deformation, or tissues with less than 50% of endosperm reserves or spotted, negatively affected the physiological potential of the seed lots. Radiographic analysis is effective as an instrument to improve castor bean seed lot quality. This non destructive analysis allows the prediction of seedling performance and enabled the selection of high-quality seeds under the standards of a sustainable and precision agriculture Index terms: image analysis, x-ray, seed quality. ANÁLISE RADIOGRÁFICA EM SEMENTES DE MAMONA (Ricinus communis L.)RESUMO -A mamona possui alto valor social e econômico, mas sua produção tem sido afetada por fatores como baixa qualidade das sementes utilizadas no plantio. A avaliação rápida e precisa da qualidade de sementes por meio do teste de raios X é efetiva na análise de lotes de sementes, mas pouco se sabe sobre a interpretação da correlação entre o tipo de imagem radiográfica e a qualidade da semente. O potencial da análise de raios X como um marcador da qualidade fisiológica das sementes é como um processo inicial para a implementação da análise de imagem assistida por computador foi avaliado usando sementes de diferentes cultivares de mamona. As sementes foram classificadas de acordo com a morfologia interna visualizada na radiografia e submetidas aos testes de germinação, emergência e taxa de crescimento de plântula. Foi possível identificar os diferentes tipos de tecidos internos, danos morfológicos e físicos em sementes de mamona por meio do teste de raios X. Tecidos que resultaram em imagens translúcidas, embriões deformados e tecidos com menos de 50% de endosperma ou manchados afetaram negativamente o potencial fisiológico dos lotes de sementes. A análise radiográfica é eficiente como um instrumento para melhorar a qualidade de lotes de sementes de mamona. Essa análise, não destrutiva, permite prever o desempenho de plântulas e selecionar sementes de alta qualidade sob os padrões de uma agricultura sustentável e de precisão.Termos para indexação: análise de imagens, raios-x, qualidade de sementes.
An analysis of the Brazilian market of decorative candles which demonstrated a high consumption in recent years was performed. Thus, it becomes important to develop targeted to understand consumer behavior in relation to these products brand studies. The aim of this study is to identify factors related to the low penetration of the company brand Decora Candles in the state of Piauí, Brazil. For this, a quantitative and qualitative approach was used. A quantitative approach was restricted to a question that sought to measure the satisfaction level of the customers of the company. So overwhelmingly reported a qualitative approach using the technique of case studies. The data collection instrument used was a semistructured script interviews containing 7 subjective questions was applied along the 30 consumers of the company between the months of March and April 2014 was found that the company needs to improve its image before the market so that it is seen and perceived by the market generating direct association with the product brand. Was realized through this study the increased power that the brand has within the administration today.
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