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Registros recuperados: 25 | |
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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: Parte de livro |
Palavras-chave: Reprodução de plantas.; Mandioca; Micropropagação; Biotecnologia.; Cassava; Micropropagation; Plant breeding; Agricultural biotechnology. |
Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/976982 |
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FERREIRA, T. M. M.; SANTOS, M. de L.; LOPES, C. L.; SOUSA, C. A. F. de; SOUZA JUNIOR, M. T.. |
Setaria viridis (L.) P. Beauv. is a species proposed to be used as model plant in reverse genetics studies for the validation of gene function. Soil salinity is a recurring problem present in more than a 100 countries worldwide, and approximately 20% of the agricultural land in the world has saline and/or sodium soils. Saline stress affects all the main processes of the plant, such as germination, growth, and, consequently, the yield. The present study aimed at determining the tolerance levels of S. viridis A10.1 to saline stress and identify its potential as a model plant to validate salt-tolerance candidate genes/alleles as well as promoter sequences from salt-responsive genes. In an initial experiment, the seeds of the plant were sown on a germination... |
Tipo: Artigo de periódico |
Palavras-chave: Estresse abiótico; Agricultura biosalina; Salinidade; Germinação; Biotecnologia; Gene; Setaria viridis; Abiotic stress; Phenomics; Agricultural biotechnology; Salinity. |
Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1127618 |
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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 de periódico |
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/alice/handle/doc/882641 |
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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 de periódico |
Palavras-chave: Organismos geneticamente modificados (OGMs); Biotecnologia agrícola; Plantas transgênicas; Proteínas Cry; Tolerância a herbicida; Organismos do solo; Fluxo gênico; Genetically modified organisms (GMOs); Cry proteins; Herbicide tolerance; Soil organisms.; Biossegurança; Entomofauna; Impacto Ambiental.; Agricultural biotechnology; Gene flow; Environmental impact; Biosafety; Transgenic plants.. |
Ano: 2004 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/110861 |
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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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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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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: Separatas |
Palavras-chave: Expressão gênica; PR proteins; Defensin; Thionin; Lipid transfer protein.; Biotecnologia; Soja; Feijão; Cana de açúcar; Genoma; Stress.; Soybeans; Agricultural biotechnology; Genomics; Cowpeas; Sugarcane. |
Ano: 2010 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/875446 |
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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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Registros recuperados: 25 | |
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