961 resultados para Biotecnologia agricola
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Description based on: 1922.
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Mode of access: Internet.
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Mode of access: Internet.
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The umbu tree (Spondias tuberosa Arruda) is a fruit native to the northeast of Brazil with great economic, social and ecological importance for the northeastern semi-arid region. Despite its role, the umbu tree has suffered negative pressure thanks to cluttered extractivism and to negative selection of its fruits, which as the deforestation and the dormancy of seeds contribute to the decrease of its production year after year, making necessary studies that contribute to the improvement of this specie and its conservation. Given the risks to the conservation of the specie and its usefulness to the population, the association between plant biotechnology, for being a tool that can be used to increase its production. and the perception of gathering communities, by valuing the point of view and the knowledge of the population, can facilitate its conservation. This work aimed to develop methods of propagation for umbu tree as well as contribute to its conservation by using biotechnology, with specific objectives to contribute to the conservation of this species; determine concentrations of BAP and ANA in the formation of buds; testing the efficiency of different substrates and concentrations of gibberellic acid on germination in vitro and ex vitro, as well as capture the perception of families in communities that engage in the gathering of umbu. To study the germination, the seeds were inoculated in different substrates (vermiculite, vermiculite + clay, clay, clay + manure and manure + vermiculite) and in different concentrations of gibberellic acid (0 mg, 250 g and 500 mg). For the formation of buds BAP to 0.1 mg-1 was associated with different concentrations of ANA (0.2; 0.4; 0.8mg.L-1). The study of perception was conducted by applying semi-structured questionnaire with Malhada Vermelha community. The experiments resulted in vermiculite and concentration of 500 mg gibberellic acid as the best for germination. The association of 0.1 mg.L-1 of BAP to 0.2 mg.L-1 of ANA provided better formation of buds. As to the application of questionnaires, they revealed that the population understands the decreased amount of umbu plants and umbu fruit in the region, as well as shows concern for its conservation.
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Lo scopo di questo elaborato è quello di illustrare le possibili opzioni di mitigazione per far fronte alla problematica dell’inquinamento diffuso delle acque derivato dal rilascio di nitrati di origine prevalentemente agricola. Le opzioni di mitigazione sono necessarie ad evitare il deterioramento sia sotto il profilo qualitativo che quantitativo. Nel primo capitolo vengono presentate le normative di riferimento sia a livello Europeo che a livello Nazionale. A livello Europeo viene esaminata la Direttiva 91/676/CEE “Direttiva sui nitrati”, la Direttiva 75/440/CEE per la qualità delle acque e la Direttiva 2000/60/CEE “Direttiva quadro sulle acque”. A livello Nazionale la Direttiva 2000/60/CE è stata recepita con l’emanazione del Decreto Legislativo 152/2006. Nel secondo capitolo viene presentata una panoramica sulle possibili opzioni di mitigazione per ridurre la quantità di nitrati presenti nelle acque sotterranee e superficiali, provenienti dall’attività agricola. Queste opzioni vengono suddivise in base all’ambito in cui è possibile intervenire per migliorare la qualità dell’acqua e dell’ecosistema.
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La crise économique dans la Région Andine est sans aucun doute, le problème le plus important, et ses conséquences pourraient conditionner le cheminement socio-économique de l'Amérique Latine et cela, à court terme et peut-être aussi à long terme. La crise dans le domaine de l'agriculture provoque, quant à elle, des effets dans d'autres secteurs économiques et sociaux. Dans ce cas, le problème prendra plus ou moins d'importance, c'est-à-dire à quel niveau et touchera, qu'il soit régional ou international. Ce présent travail, tente donc d'analyser l'effet du "Développement du Coopérativisme agricole dans les Pays du Pacte Andin", et pour se faire, nous investiguerons les thèmes suivants : - Le redressement économique et le développement en Amérique Latine. - Le Pacte Andin. - Le Développement du Coopérativisme Agricole dans la Région Andine. - L'Organisation Coopérative comme modèle d'intégration. - Recommandations. - Conclusion.
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The starting point of the present work consisted of investigating the development of biotechnology in the Northeast region of Brazil from the perspective of a Regional Innovation System (RIS). The theoretical framework adopted relied on the approaches and concepts presented by the Neo-Schumpeterian perspective. This framework was chosen because, by means of the Innovation System concept, this literature allows us to analyze the relationships and configurations of actors, as well as the role of the state and of social, science and technology, and economic policies in the studied region. The analysis considered four selected dimensions: physical infrastructure, human capital, scientific production, and funding. These variables were chosen because they allow us to verify the possibilities and limitations of developing a biotechnology RIS in the Northeast of Brazil, and these elements would help in answering the question behind this dissertation. The location of the physical infrastructure was determined by means of bibliographic and documental research and interviews with heads of institutions that do biotechnology research. Regarding human capital, the analysis focused on resource training in biotechnology, highlighting graduate courses and research groups in the area. To measure knowledge production, we delimited scientific collaboration among researchers in the field of biotechnology as the focus of this category. For the funding dimension, information was gathered from reports available at the websites of national and state funding agencies. The data was analyzed through method triangulation, involving quantitative and qualitative research stages. To back the analyses, we revisited the integration policies in the area of Science, Technology and Innovation. Our analysis has shown that these policies play a crucial role in the development of biotechnology in the region being studied. The data revealed that the physical infrastructure is concentrated in only three states (Bahia, Ceará, and Pernambuco). In this regard, the Northeast Biotechnology Network (Renorbio) stands out as a strategic actor, enabling states with poor infrastructure to develop research through partnerships with institutions located in another state. We have also verified that the practices involving human resource training and knowledge production are factors that enable the emergence of a regional system for biotechnology in the studied region. As limitations, we have verified the low immersion level of regional actors, the heterogeneity of socioeconomic indicators, the lack of financial resources, and a low innovation culture in the business sector. Overall, we have concluded that the development of a Regional Innovation System in Biotechnology, based on the current regional dynamics, depends on an effective change in the behavior of the social agents involved, both in the national and regional dimensions as well as in the public and private spheres
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Esta publicação tem a finalidade de esclarecer dúvidas que porventura ainda persistam quanto a aplicabilidade de plantas transgêncas para o beneficio da qualidade alimentar e nutricional. Traz em seu bojo, a converg~encia entre biodiversidade, biotecnologia e fundamentos técnico-científicos para a geração de organismos geneticamente modificados (OGMs).
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Dissertação de mest. em Aquacultura, Unidade de Ciências e Tecnologia dos Recursos Aquáticos, Univ. do Algarve, 1997
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Resgate da memória da Embrapa Recursos Genéticos e Biotecnologia.
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2009