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Registros recuperados: 22
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Acúmulo de matérias fresca e seca em plantas de mandioca (Manihot esculenta Crantz) BGM 340 (CM-305/5) micropropagadas sob diferentes concentrações de um fertilizante solúvel. Repositório Alice
SANTOS, E. B.; SOUZA, A. da S.; SILVEIRA, D. M. de S.; MENDES, M. I. de S.; SOUZA, K. A. de; VIDAL, Á. M..
A mandioca é uma cultura bastante difundida e importante, principalmente por ser constituinte da base alimentar de populações carentes da América Latina, África e Ásia (OLIVEIRA et al., 2001), além de ter grande importância na indústria alimentícia, na fabricação de amido e rações concentradas para animais, dentre outros produtos (SOUZA et al., 2008). É tradicionalmente propagada por manivas. Entretanto, esta propagação ocasiona baixa produção por causa de dois fatores principais: o envelhecimento fisiológico provocado pela constante multiplicação e a infestação por doenças que são transmitidas por sucessivas gerações (SILVA et al., 2002), o que pode reduzir a qualidade do material de plantio e, consequentemente, a produção de raízes (PIZA; PINHO, 2002)....
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Mandioca; Micropropagação; Reprodução de plantas; Biotecnologia; Cassava; Micropropagation; Plant breeding; Agricultural biotechnology.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/976982
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AGRICULTURAL BIOTECHNOLOGY: FARM-LEVEL, MARKET, AND POLICY CONSIDERATIONS AgEcon
Van der Sluis, Evert; Diersen, Matthew A.; Dobbs, Thomas L..
This study provides an overview of the economic costs, benefits, and risks involved with agricultural biotechnology at the farm level, at the market level, and for the farm and food system as a whole. Both advantages and disadvantages of agricultural biotechnology are discussed. Among the drivers of U.S. domestic and international consumer demand for transgenic crop products discussed are environmental and food safety concerns. A comparison is made between a "science-based" regulatory framework and a policy based on the precautionary principle. The authors argue that open dialogue is needed for achieving improved public understanding of agricultural biotechnology, and that analyses need to go beyond discussing the scientific merits of biotechnology, to...
Tipo: Journal Article Palavras-chave: Acceptance; Agricultural biotechnology; Benefits; Costs; Public dialogue; Risks; Research and Development/Tech Change/Emerging Technologies.
Ano: 2002 URL: http://purl.umn.edu/14654
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ECONOMIC EFFECTS OF PURITY STANDARDS IN BIOTECH LABELING LAWS AgEcon
Giannakas, Konstantinos; Kalaitzandonakes, Nicholas G..
This paper develops a model of heterogeneous consumer preferences to analyze the market and welfare effects of reduced purity standards for non-GM labeled food. Analytical results show that purity standards affect the equilibrium prices and quantities of both the GM and non-GM products as well as the welfare of the groups involved. A change in purity standards is shown to create winners and losers among the consumers as well as among the suppliers of the GM and conventional products.
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural biotechnology; Genetically modified products; Labeling; Purity standards; Consumer/Household Economics.
Ano: 2005 URL: http://purl.umn.edu/19393
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Endogenous R&D Investment and Market Structure: A Case Study of the Agricultural Biotechnology Industry AgEcon
Anderson, Benjamin; Sheldon, Ian M..
Over the past three decades, the agricultural biotechnology sector has been characterized by rapid innovation, market consolidation, and a more exhaustive definition of property rights. The industry attributes consistently identified by the literature and important to this analysis include: (i) endogenous sunk costs in the form of expenditures on R&D; (ii) seed and agricultural chemical technologies that potentially act as complements within firms and substitutes across firms; and (iii) property rights governing plant and seed varieties that have become more clearly defined since the 1970s. This paper adds to the stylized facts of the agricultural biotechnology industry to include the ability of firms to license technology, a phenomenon observed only...
Tipo: Conference Paper or Presentation Palavras-chave: Licensing; Market structure; R&D; Agricultural biotechnology; Research and Development/Tech Change/Emerging Technologies; L22; L24; Q16.
Ano: 2011 URL: http://purl.umn.edu/107832
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Engineering Resistance and Disease Management in ornamental Crops Taiwan Agricultural Research Institute
Hei-ti Hsu.
[[abstract]]Viral diseases of ornamental plants cause major losses in productivity and quality. Host pl1ant resistance offers an effective means of controlling plant diseases caused by viruses. It minimizes the necessity for the application of pesticides. However, there are many ornamentals in which no natural disease resistance is available. Genetic engineering allows the introduction of specific, in some instances broad spectrum , disease resistance derived from other species , or even from the pathogen it self into plant genotypes that have been selected for desirable horticultural properties.
Palavras-chave: Agricultural biotechnology; Floriculture; Genetic enhacement; Molecular breeding; Virus resistance Ecological and Environmental Biosafety of Transgenic Plants : proceedings of international symposium [[classification]]9.
Ano: 2006
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Genetically Modified Crops and Labor Savings in US Crop Production AgEcon
Gardner, Justin G.; Nelson, Carl H..
In spite of widespread adoption there is mixed evidence as to whether or not adopting Genetically Modified (GM) crops increase farm welfare. One possible reason for widespread adoption is labor savings. Using a treatment effect model we estimate the labor savings associated with adopting a GM crop.
Tipo: Conference Paper or Presentation Palavras-chave: Genetically modified crops; Agricultural biotechnology; Endogeneity; Treatment effects; Survey weights; Crop Production/Industries.
Ano: 2007 URL: http://purl.umn.edu/34919
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GM-free private standards and their effects on biosafety decision-making in developing countries AgEcon
Gruere, Guillaume P.; Sengupta, Debdatta.
We provide a comprehensive review of international cases where GM-free private standards set up by food companies in developed countries have influenced biosafety policymaking in developing countries. We find twenty-nine cases where private importers have directly or indirectly affected policy decisions in twenty-one countries. Most of the cases relate irrational fear of export losses to excessively precautionary decisions. These cases are based on two generally misleading premises: the belief that Europe or Japan represents the only market for exports, and the perception that non-GM segregation is infeasible or prohibitively costly in all situations. Our study also demonstrates the importance of information asymmetries across countries and agents and the...
Tipo: Conference Paper or Presentation Palavras-chave: Agricultural biotechnology; Private standards; Political economics.; Agricultural and Food Policy; International Relations/Trade; Political Economy; Q17; Q18.
Ano: 2009 URL: http://purl.umn.edu/51334
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Identification of reference genes for expression analysis by real-time quantitative PCR in drought-stressed soybean. Repositório Alice
STOLF-MOREIRA, R.; LEMOS, E. G. de M.; ABDELNOOR, R. V.; BENEVENTI, M. A.; ROLLA, A. A. P.; PEREIRA, S. dos S.; OLIVEIRA, M. C. N. de; NEPOMUCENO, A. L.; MARCELINO-GUIMARÃES, F. C..
The objective of this work was to validate, by quantitative PCR in real time (RT-qPCR), genes to be used as reference in studies of gene expression in soybean in drought-stressed trials. Four genes commonly used in soybean were evaluated: GmB-actin, GmGAPDH, GmLectin and GmRNAr18S. Total RNA was extracted from six samples: three from roots in a hydroponic system with different drought intensities (0, 25, 50, 75 and 100 minutes of water stress), and three from leaves of plants grown in sand with different soil moistures (15, 5 and 2.5% gravimetric humidity). The raw cycle threshold (Ct) data were analyzed, and the efficiency of each primer was calculated for an overall analysis of the Ct range among the different samples. The GeNorm application was used to...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Estabilidade de expressão; Expressão gênica; RT-qPCR; Soja; Biotecnologia; Deficiência hídrica; Soybeans; Gene expression; Plant-water relations; Agricultural biotechnology.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/882641
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Interferências no agrossistema e riscos ambientais de culturas transgênicas tolerantes a herbicidas e protegidas contra insetos. Repositório Alice
SIQUEIRA, J.O.; TRANNIN, I.C. de B.; RAMALHO, M.A.P.; FONTES, E.M.G..
A engenharia genética possibilitou o desenvolvimento de cultivares transgênicas, cuja área plantada em 18 países atinge 67,7 milhões de hectares, principalmente de cultivares tolerantes a herbicidas e protegidas contra insetos-praga. Mesmo após rigorosa avaliação de riscos, o plantio dessas cultivares tem despertado preocupação com impactos ambientais, como escape gênico e efeitos na biodiversidade. Considerando o milho e a soja, o risco de fluxo gênico horizontal é remoto pela inexistência de espécies silvestres compatíveis, existindo esse risco para algodão em certas regiões do Brasil. O escape gênico para lavouras convencionais pode ocorrer, mas pode ser evitado por isolamento dos cultivos. Outra preocupação é o impacto de cultivares expressando...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Organismos geneticamente modificados (OGMs); Biotecnologia agrícola; Plantas transgênicas; Biossegurança; Impacto ambiental; Proteínas Cry; Tolerância a herbicida; Organismos do solo; Fluxo gênico; Genetically modified organisms (GMOs); Agricultural biotechnology; Transgenic plants; Biosafety; Environmental impact; Cry proteins; Herbicide tolerance; Soil organisms; Entomofauna; Gene flow.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/handle/doc/110861
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Knowledge Capital, Intangible Assets, and Leverage: Evidence from U.S. Agricultural Biotechnology Firms AgEcon
Sporleder, Thomas L.; Moss, Leeann E..
Agricultural biotechnology firms are high technology companies. Firms in general, and high technology firms in particular, are a set of both assets in place and growth opportunities. This has important implications for managerial decision-making. Knowledge capital motivates exploitation of growth options, which affects firm cash flow. In turn, the level and volatility of firm cash flow influences firm financing decisions. Previous studies suggest that knowledge capital can influence both the location and capital structure of firms in the biotechnology industry. However, empirical analysis has not extended to agricultural biotechnology firms. This research helps in understanding the role of knowledge capital and other intangible assets in capital structure...
Tipo: Journal Article Palavras-chave: Capital structure; Agricultural biotechnology; Knowledge capital; Intangible assets; Agribusiness.
Ano: 2004 URL: http://purl.umn.edu/8123
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Managing agricultural biotechnology in Colombia Electron. J. Biotechnol.
Schuler,Ingrid; Orozco,Luis Antonio.
The international scenario for biotechnology shows a rapid tendency at industrialized countries in the increase of publications, patents, enterprises and novel solutions for the industry, the environment, health and agriculture. Nevertheless, Colombia has an important delay in relation to the international scientific development and the capacity to generate wealth and services for its productive systems. This delay has been one of the concerns of the country's policy during the last years, and more precisely since 2002, when for the first time biotechnology was included in a National Development Plan as one of the mechanisms for competitiveness and the use of biodiversity and genetic resources. This paper is the result of a survey conducted in 2005 aimed...
Tipo: Journal article Palavras-chave: Agricultural biotechnology; Indicators; Legislation; Policies; Public perception..
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000300001
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Plant antimicrobial peptides: an overview of superSAGE transcriptional profile and a functional review. Repositório Alice
KIDO, E. A.; PANDOLFI, V.; HOULLOU-KIDO, L. M.; ANDRADE, F. C.; MARCELINO, F. C.; NEPOMUCENO, A. L.; ABDELNOOR, R. V.; BURNQUIST, W. L.; BENKO-ISEPPON, A. M..
Defensin, thionin and lipid transfer protein (LTP) gene families, which antimicrobial activity has an attractive use in protein engineering and transgenic production of agronomically important plants, have been here functionally reviewed. Also, a transcriptional overview of plant SuperSAGE libraries and analysis of 26 bp tags possibly annotated for those families are presented. Tags differentially expressed (p < 0.05) or constitutively transcribed were identified from leaves or roots from SuperSAGE libraries from important Brazilian plant crops [cowpea (Vigna unguiculata (L.) Walp.), soybean (Glycine max (L.) Merr.) and modern sugarcane hybrids (Saccharum spp.)] submitted to abiotic [salt (100 mM NaCl) or drought] or biotic stresses [fungus inoculation...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Expressão gênica; PR proteins; Defensin; Thionin; Lipid transfer protein; Stress; Biotecnologia; Soja; Feijão; Cana de açúcar; Genoma; Soybeans; Agricultural biotechnology; Genomics; Cowpeas; Sugarcane.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/875446
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PUBLIC OPINION OF AGBIOTECH IN THE US AND UK: A CONTENT ANALYSIS APPROACH AgEcon
Kalaitzandonakes, Nicholas G.; Marks, Leonie A..
In this paper we use content analysis to show trend in public opinion of agrobiotechnology in the United Kingdom (UK) and the United States (US). We test for the degree of positive and negative content in mass media reporting over the period 1995-1998. Specifically, we test whether there are qualitative and quantitative differences between three national daily newspapers - the Daily Telegraph (UK), USA Today (US), and the Washington Post (US) - based on reporting of agrobiotechnology. Results indicate that content has become more negative in the UK over the time period while reporting the US has not significantly changed. Results indicate that both the BSE and Pusztai crises had an impact on the proportion of negative reporting in the Daily Telegraph.
Tipo: Conference Paper or Presentation Palavras-chave: Content analysis; Mass media reporting; Agricultural biotechnology; Research and Development/Tech Change/Emerging Technologies; Teaching/Communication/Extension/Profession.
Ano: 1999 URL: http://purl.umn.edu/21678
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PUBLIC-PRIVATE PARTNERSHIPS IN AGRICULTURAL RESEARCH: AN ANALYSIS OF CHALLENGES FACING INDUSTRY AND THE CONSULTATIVE GROUP ON INTERNATIONAL AGRICULTURAL RESEARCH AgEcon
Spielman, David J.; von Grebmer, Klaus.
Public-private partnerships offer potentially important opportunities for pro-poor agricultural research in developing countries. Yet in the international agricultural research community--and with regard to the Consultative Group on International Agricultural Research (CGIAR) itself--we see few examples of successful public-private partnerships, and fewer examples where such collaborations have contributed to food security, poverty reduction and economic growth. This study assesses the opportunities for, and challenges to, creating and sustaining public-private partnerships between the international agricultural research centers of the CGIAR and leading multinational, research-based agribusiness companies. The study hypothesizes that the willingness and...
Tipo: Working or Discussion Paper Palavras-chave: Public-private partnership; Collaborative research; Private sector; Multinational firms; Agricultural research and development; Agricultural biotechnology; Intellectual property rights; Research and Development/Tech Change/Emerging Technologies.
Ano: 2004 URL: http://purl.umn.edu/16089
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Research Investments and Market Structure in the Food Processing, Agricultural Input, and Biofuel Industries Worldwide AgEcon
Fuglie, Keith O.; Heisey, Paul W.; King, John L.; Day-Rubenstein, Kelly A.; Schimmelpfennig, David E.; Wang, Sun Ling.
Meeting growing global demand for food, fiber, and biofuel requires robust investment in agricultural research and development (R&D) from both public and private sectors. This study examines global R&D spending by private industry in seven agricultural input sectors, food manufacturing, and biofuel and describes the changing structure of these industries. In 2007 (the latest year for which comprehensive estimates are available), the private sector spent $19.7 billion on food and agricultural research (56 percent in food manufacturing and 44 percent in agricultural input sectors) and accounted for about half of total public and private spending on food and agricultural R&D in high-income countries. In R&D related to biofuel, annual...
Tipo: Technical Report Palavras-chave: Agricultural biotechnology; Agricultural chemicals; Agricultural inputs; Animal breeding; Animal health; Animal nutrition; Aquaculture; Biofuel; Concentration ratio; Crop breeding; Crop protection; Farm machinery; Fertilizers; Herfindahl index; Globalization; Market share; Market structure; Research intensity; Seed improvement; Productivity Analysis.
Ano: 2011 URL: http://purl.umn.edu/120324
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Rethinking the Risk Management Process for Genetically Engineered Crop Varieties in Small-scale, Traditionally Based Agriculture Ecology and Society
Cleveland, David A; University of California, Santa Barbara; cleveland@es.ucsb.edu; Soleri, Daniela; University of California, Santa Barbara; soleri@es.ucsb.edu.
Tipo: Peer-Reviewed Reports Palavras-chave: Agricultural biotechnology; Biological diversity; Biological invasion; Crop genetic resources; Farmer participation in risk evaluation; Gene flow; Genetic engineering; Risk analysis; Risk management process; Traditionally based agricultural systems compared with industrial agriculture systems; Transgenes; Transgenic crop varieties.
Ano: 2005
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SIZE AND DISTRIBUTION OF MARKET BENEFITS FROM ADOPTING BIOTECH CROPS AgEcon
Price, Gregory K.; Lin, William W.; Falck-Zepeda, Jose Benjamin; Fernandez-Cornejo, Jorge.
This study estimates the total benefit arising from the adoption of agricultural biotechnology in one year (1997) and its distribution among key stakeholders along the production and marketing chain. The analysis focuses on three biotech crops: herbicide-tolerant soybeans, insect-resistant (Bt) cotton, and herbicide-tolerant cotton. Adoption of these crops resulted in estimated market benefits of $212.5-$300.7 million for Bt cotton, $231.8 million for herbicide-tolerant cotton, and $307.5 million for herbicide-tolerant soybeans. These benefits accounted for small shares of crop production value, ranging from 2 percent to 5 percent. U.S. farmers captured a much larger share (about a third) of the benefits for Bt cotton than with herbicide-tolerant soybeans...
Tipo: Report Palavras-chave: Agricultural biotechnology; Distribution of benefits; Bt cotton; Herbicide-tolerant cotton; Herbicide-tolerant soybeans; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2003 URL: http://purl.umn.edu/33562
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The Road to Commercialization of Transgenic Products in Taiwan -A Bridge Too Far Taiwan Agricultural Research Institute
Wen-Yen Kao.
[[abstract]]The government of Taiwan commenced a national effort of investing in biotechnology very early in the 1980s and Steadily increased public investment in various national initiatives and programs. Today, after 10 years of the National Science and Technology Program for Agricultural Biotechnology (NSTP/AB), it has established a solid research foundation, yet has achieved no notable successes in its goals of commercialization. While no one has any doubts over the technological capacity that Taiwan possesses, there are clearly gaps yet to be identified that are preventing the access of bridging R&D and markets. This paper discusses strategies in product development cycles and possible deficiencies that Taiwan must overcome to realize this great...
Palavras-chave: Agricultural biotechnology; Industrialization platform; Genetically modified organisms (GMOs); Regulatory science; Capacity building Ecological and Environmental Biosafety of Transgenic Plants : proceedings of international symposium [[classification]]9.
Ano: 2006
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The U.S. Patent System and Developing Country Access to Biotechnology: Does the Balance Need Adjusting? AgEcon
Taylor, Michael R.; Cayford, Jerry.
Many agricultural and food security experts believe that biotechnology has potential to assist developing country farmers in meeting current and future food needs. Most of the tools of biotechnology have been developed, however, by companies, governments, and universities in industrialized nations; are the subject of U.S. patents; and have so far been applied commercially to address the needs of large-scale growers in the United States and other developed countries. For commercial and other reasons, applications of biotechnology that might benefit developing country farmers are unlikely in the foreseeable future to be developed and disseminated through commercial channels. At the same time, noncommercial, public sector researchers report that their access...
Tipo: Working or Discussion Paper Palavras-chave: United States patents; Agricultural biotechnology; Developing countries; Food security; Research and Development/Tech Change/Emerging Technologies; O34; Q16.
Ano: 2002 URL: http://purl.umn.edu/10872
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VALUATION OF INTERNATIONAL PATENT RIGHTS FOR AGRICULTURAL BIOTECHNOLOGY: A REAL OPTIONS APPROACH AgEcon
Nadolnyak, Denis A.; Sheldon, Ian M..
Uncertainty of returns from marketing is an extremely important factor affecting the diffusion of a wide range of genetically modified (GM) crops worldwide. Biotech companies face complicated choices in making decisions about whether to enter agricultural markets in different countries with their agricultural products. In this paper, we model these choices as a real option problem of entry decision solved at a micro-level by individual firms. The model is aggregated in order to reflect the heterogeneity of different genetic events, as well as different markets, in terms of their profitability. The solution to the model produces distributions of entry probabilities as functions of the functional forms (and parameter values) that govern the evolution of...
Tipo: Conference Paper or Presentation Palavras-chave: Patent values; Agricultural biotechnology; Real options; Numerical simulation.; Research and Development/Tech Change/Emerging Technologies.
Ano: 2003 URL: http://purl.umn.edu/21982
Registros recuperados: 22
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