Made available in DSpace on 2014-06-11T19:28:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-02-22Bitstream added on 2014-06-13T19:58:03Z : No. of bitstreams: 1 silva_acc_me_jabo.pdf: 662789 bytes, checksum: 2b185ee7df4afd2dda1bcd07f0bcee1a (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / A procura cada vez maior por uma alimentação saudável e balanceada tem levado a um aumento no consumo de frutas e verduras, e a uma maior diversificação pelos consumidores. Em virtude disso, o consumo de frutas exóticas tem aumentado nos últimos anos, destacando-se, entre os produtos comercializados, a pitaya. Por ser uma cultura ainda incipiente no país, há a necessidade de estabelecimento de pesquisas quanto ao seu cultivo para dar suporte aos produtores. Neste sentido, este trabalho foi realizado com o objetivo de realizar a caracterização do ciclo de produção da pitaya vermelha (Hylocereus undatus) na região de Jaboticabal, SP e a frutificação e qualidade de frutos em função da fonte de pólen, do ambiente de cultivo e da época de produção. O experimento foi conduzido em delineamento inteiramente casualizado, em esquema fatorial 3X2X2 (três espécies doadoras de pólen: H. undatus, H. polyrhizus e Selenicereus setaceus, dois ambientes – condução sob tela plástica branca e preta, e duas épocas de polinização: março e abril), com quatro repetições. Observou-se que a emissão de gemas e o florescimento na cultura da pitaya ocorrem com a associação de altas temperaturas e precipitação, havendo constante emissão de botões florais durante os meses de novembro a abril, com pico de florescimento no mês de dezembro. O clone avaliado mostrou-se auto-incompatível, sendo necessária polinização cruzada, com pólen de outras espécies de pitaya para garantir a frutificação. As condições climáticas influenciaram diretamente do desenvolvimento e na qualidade dos frutos obtidos / The increasing demand for a healthy and balanced diet has led to an increased on fruits and vegetables expenditure, and greater diversification by the consumer. As a result, consumption of exotic fruits has increased in recent years, especially the dragon fruit. Due of the fact that is a new crop in Brazil country, researches are needed about their cultivation to support their producers. Therefore, this study was conducted with the aim of assess the phenology of red dragon fruit (Hylocereus undatus) on Jaboticabal, Brazil, and the effect of pollen source, environment for cultivation, and time on fruit set and fruit quality. The experimental design was entirely randomized, in a 3 X 2 X 2 (three pollen sources: H. undatus, H. polyrhizus and Selenicereus. setaceus X two environment for cultivation – under plastic screen black or white, X two times of pollination: March and April) factorial arrangement, with 4 replicates. It was observed that the issue of floral buds and the bloom on dragon fruit culture occurs with a combination of high temperatures and rainfall, with constant emission of flower buds during the months from November to April, with peak bloom in December. The clone evaluated demonstrated self-incompatible, requiring cross-pollination with foreign pollen to ensure fruit set. The environmental conditions influences directly on fruit development and quality

Cocoa has been useful in several ways, especially to countries that produce it and consumers all over the world. Its benefits range from improving economies to satisfying millions all over the world who desire one cocoa product or the other. The production of cocoa however is not without its own attendant problems. Aging tree stock, spread of diseases, and production capacity problems are, but a few of many challenges that seed gardens that produce cocoa face. This study investigated the pollination process on selected seed gardens in Ghana, the second largest world producer of cocoa. The purpose of this study was to investigate the artificial pollination process of cocoa on seed gardens in Ghana, and explore ways by which the Lean principle of Value Stream Mapping could be applied in improving the process. The process of pollination was observed on eighteen seed gardens, and a current value stream map depicting the existing process developed to give an indication of the current state of affairs. Subsequently, a future value stream map based on the current map was developed to show aspects of the process that could be improved to enhance the operations of the seed gardens. The future value stream map revealed that operational procedures relating to cleaning and preparation of trees, choosing male and female trees for pollination, harvesting of pollen, and manually pollinating practices presented various avenues for improving the pollination process and hence seed production output.