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Registros recuperados: 65 | |
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Körbes,Ana Paula; Droste,Annette. |
Somatic embryogenesis is an efficient method for the production of target cells for soybean genetic transformation. However, this method still offers low percentages of plant regeneration, and perhaps is related to the maturation process and high morphological abnormalities of the matured embryos. This study aimed to identify a maturation medium that could contribute to the outcome of more efficient plant regeneration results. Embryogenic clusters, derived from cotyledons of immature seeds of the soybean cultivars Bragg and IAS5, were used as starting material for embryos development. Different maturation media were tested by using 6% maltose, 3% sucrose or 6% sucrose, combined with or without 25 g L-1 of the osmotic regulator polyethylene glycol... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; PEG-8000; Sucrose; Osmotic regulation. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000300003 |
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SEIJO,GUILLERMO. |
Changes in cell water relations during precultures were followed in an attempt to understand the mechanism of cell hardening for cryopreservation by vitrification. Medium containing 0.4 M sucrose (psiw=-1.45 MPa) and containing 5 mg L-1 of ABA (MT psiw=-0.73 MPa and MS psiw=-0.48 MPa) were used to harden cell suspensions of orange and carrot. Preculture in these medium did not cause a significant decrease of cell viability, however, it improved the cell survival to PVS2 and liquid nitrogen expositions. When cells were inoculated into medium containing 0.4 M sucrose, the cell psiw decreased rapidly until reach the medium psiw , and turgor was also severely reduced or disappeared. Subsequently, cell psis began to decrease and after 48 h of treatment in low... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Preculture; Cell suspension; Sucrose; ABA; Cryopreservation. |
Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312000000200007 |
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Cardozo,Nilceu Piffer; Sentelhas,Paulo Cesar. |
The lack of information about the effects of cultivars, crop age and climate on the sugarcane (Saccharum ssp.) crop yield and quality has been the primary factor impacting the sugar-ethanol sector in Brazil. One of the processes about which we do not have a satisfactory understanding is sugarcane ripening and the effects of cultivars, crop age and climate on that. Sugarcane ripening is the process of sucrose accumulation in stalks, which is heavily influenced by several factors, mainly by climatic conditions such as air temperature and water deficits. Because it is a complex process, studies of the variables involved in sugarcane ripening can provide important information, resulting in a better use of commercial cultivars, bringing advantages to growers,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum spp; Air temperature; Precipitation; Water deficit; Sucrose. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000600011 |
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GEROMEL, C.; FERREIRA, L. P.; BOTTCHER, A.; POT, D.; PEREIRA, L. F. P.; LEROY, T.; VIEIRA, L. G. E.; MAZZAFERA, P.; MARRACCINI, P.. |
Sucrose is one of the compounds in the raw coffee bean that has been identified as an important precursor of coffee flavour and aroma. In order to increase our knowledge of sucrose metabolism in coffee species, sucrose and reducing sugar content were investigated in the fast fruit-ripening coffee species Coffea racemosa. Fruits were harvested regularly from anthesis, until the point of complete fruit maturation and tissue development, followed by measurement of fruit tissue weight. Pericarp was the most abundant tissue, and always represented around 70?80% of fruit fresh weight. The perisperm present in young fruits was rapidly replaced by the endosperm at around 40 days after flowering (DAF). In the latter tissue, total and reducing sugars decreased... |
Tipo: Artigo de periódico |
Palavras-chave: Coffea racemosa; Sucrose. |
Ano: 2008 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/880537 |
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GILIO, L. A.; BETTIOL, W.. |
A otimização de meios de cultura utilizando reagentes baratos e de fácil acesso é importante para o controle biológico de doenças de plantas. Assim, o objetivo do presente trabalho foi substituir a fonte de carbono de um meio quimicamente definido para bactérias (MORAES, I. de O.; CAPALBO, D. M. F.; MORAES, R. de O. Multiplicação de agentes de controle biológico. In: BETTIOL, W. Controle Biológico de doenças de plantas. Jaguariúna: Embrapa, 1991. p. 383) por fonte mais barata e de fácil acesso, a sacarose, para produzir Bacillus velezensis AP-3. O experimento foi instalado em delineamento inteiramente casualizado, sendo avaliado o meio de cultura quimicamente definido para bactérias e o mesmo com alteração da glicose para sacarose. Para tanto, cada... |
Tipo: Resumo em anais e proceedings |
Palavras-chave: Bacillus velezensis; Sacarose; Controle Biológico; Glicose; Meio de Cultura; Sucrose; Glucose; Biological control. |
Ano: 2023 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1163008 |
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SILVEIRA, D. M. de S.; SANTOS, V. da S.; SOUZA, A. da S.; SANTOS, K. C. F. dos; MENEZES, M. C.. |
A mandioca é nativa do continente americano, cultivada atualmente em muitos países, sendo o sexto produto alimentar da humanidade, em volume de produção (OTSUBO et al., 2001). Diante da relevância dessa cultura, a conservação in vitro de plantas micropropagadas constitui-se numa ferramenta importante para auxiliar na preservação de seus recursos genéticos, e é um procedimento que vem sendo aplicado com sucesso em muitas espécies de propagação vegetativa (SOUZA et al., 2009). Porém, o estabelecimento e a manutenção de culturas in vitro não podem ser considerados, em si, um sistema de conservação, pois por períodos prolongados envolve riscos que podem ser minimizados pelo retardamento do crescimento das culturas (TORRES et al., 2009).Tendo isso em vista,... |
Tipo: Parte de livro |
Palavras-chave: Mandioca; Sacarose; Banco de germoplasma; Cassava; Sucrose; Germplasm. |
Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/976756 |
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GRUNENNVALDT, R. L.; DEGENHARDT, J.; BROOKS, P.; TOMASI, J. de C.; HANSEL, F. A.; TRAN, T.; GOMES, E. N.; DESCHAMPS, C.. |
Ilex paraguariensis (yerba mate) is a native species from South America and is a rich source of bioactive compounds. There is a lack of research efforts on the phytochemical investigation of callus culture from this species. In the present study, an effort was made to optimize callus culture conditions and to identify secondary compounds. Calli were induced from 10 genotypes using leaf explants and the best genotype was selected to evaluate the effects of cytokinin types and concentrations on callus induction and biomass accumulation. The best genotype and cytokinin treatment were used to conduct one last experiment with sucrose concentrations in culture media and its effects on calli biomass, antioxidant activity and secondary compounds accumulation.... |
Tipo: Artigo de periódico |
Palavras-chave: Biomass accumulation; Plant growth regulators; Erva mate; Atividade antioxidante; Acúmulo de biomassa; Ilex Paraguariensis; Sacarose; Regulador de Crescimento; Yerba mate; Sucrose; Antioxidant activity. |
Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126527 |
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ANDRADE JÚNIOR, W. V. de; SANTOS FILHO, B. G. dos; OLIVEIRA NETO, C. F. de; CRUZ, E. D.; OKUMURA, R. S.; NASCIMENTO, V. R. do; MARTINS, J. T. da S.; MACHADO, L. C.; SOUSA, D. J. P. de; TEIXEIRA, J. S. S.. |
This study aimed to assess the biochemical responses of Parkia gigantocarpa saplings to waterlogging. Waterlogging was imposed by flooding the saplings in 14 kg pots to approximately 5 cm above the soil surface. The experimental design was completely randomized and involved two water conditions (control and waterlogging) over five assessment periods (after 0, 4, 8, 12 and 16 days of waterlogging), with five replications per treatment. Starch, sucrose, total soluble carbohydrates and total soluble proteins were measured. The saplings exposed to waterlogging showed significant reductions in starch concentrations (62.50%) and total soluble proteins (40.98%), especially in the leaves. Waterlogging reduced the concentration of sucrose in leaves (44.38%) and... |
Tipo: Artigo de periódico |
Palavras-chave: Parkia gigantocarpa Ducke; Amido; Sacarose; Carboidrato; Proteína; Muda.; Relação Água-Planta; Starch; Sucrose; Carbohydrates; Proteins. |
Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1117209 |
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MOREIRA, B. R. de A.; VIANA, R. da S.; LISBOA, L. A. M.; LOPES, P. R. M.; FIGUEIREDO, P. A. M.; RAMOS, S. B.; BONINI, C. S. B.; TRINDADE, V. D. R.; ANDRADE, M. G. de O.; MAY, A.. |
Abstract: Plant resistance inducers are cost-effective and environmentally pleasing strategies of plant protection to mitigate biotic and abiotic agents threatening food safety and energy security. We, accordingly, present jasmonic acid and k-phosphite as low-cost strategies to enhance productive yield and technological quality of sugarcane crop. Exogenously treatment of the sugarcane variety SP81-3250 consisted of carrying out foliar application of jasmonic acid at 1, 1.5 and 2 ml L-1 and K-phosphite at 2, 4 and 6 ml L-1 before crop flowering. Interestingly, both systemic phytorregulator and foliar fertilizer at the lowest doses significantly improved contents of total soluble solids and sucrose, as well as productive yield of fermentable sugars. Jasmonic... |
Tipo: Artigo de periódico |
Palavras-chave: Host self-defense system; Induced resistance technique; Jasmonate-methyl; Phytohormone; Plant-resistance elicitor; Saccharum sp; Cana de Açúcar; Regulador de Crescimento; Nutriente Mineral; Resistência; Sacarose; Sugarcane; Sugarcane juice; Sucrose; Sucrose-phosphate synthase; Jasmonic acid; Potassium phosphite; Induced resistance. |
Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1116047 |
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MONTE, A. P. O. do; LOIOLA FILHO, J. B.; SOUZA, T. T. dos S.; MIRANDA, M. de S.; MAGALHÃES, L. C.; BARROS, C. H. S. C.; SILVA, A. A. de A.; SANTOS, A. O.; GUIMARÃES, A. de S. L.; COSTA, J. M. da S.; SOUSA, P. H. F. de; NOGUEIRA, D. M.; CORDEIRO, M. F.; LOPES JÚNIOR, E. S.. |
This study aimed to evaluate the efficacy of adding sucrose in vitrification solution of ovine embryos produced in vivo. Forty Dorper ewes were selected and superovulated. Immediately prior to the embryo collection by laparotomy, a laparoscopy was erformed to verify the superovulatory response. The recovered flushing was followed by embryo evaluation and embryos were divided in two experimental groups where embryos from Control group were submitted to a traditional vitrification protocol and embryos from ucrose group to a modified vitrification protocol with sucrose. After warming, embryos were again divided regarding cryoprotectant removal (Indirect) or not (Direct). The embryo quality was classified as embryos of degrees I (excellent or good), II... |
Tipo: Artigo de periódico |
Palavras-chave: Raça Dorper.; Produção animal; Ovino; Cana de Açúcar; Criopreservação; Ovulação.; Animal production; Sucrose. |
Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036144 |
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ANDRADE JÚNIOR, W. V.; OLIVEIRA NETO, C. F.; SANTOS FILHO, B. G.; CRUZ, E. D.; AMARANTE, C. B.; VINÍCIUS, S. F.; NOGUEIRA, G. A. S.; NASCIMENTO, V. R.; SOUSA, D. J. P.; TEIXEIRA, J. S. S.. |
Virola surinamensis is a forest species widely distributed in the estuaries of the Amazon. These ecosystems are susceptible to contamination by Cadmium (Cd), indicating that the plant has strategies for tolerating this metal. The aim of this study was to assess the nitrogen and carbon metabolism of young plants of Ucuúba (Virola surinamensis) in the presence of cadmium with the perspective of the phytoremediation of contaminated environments. The used experimental design was a completely randomized design with five Cd concentrations (0,15, 30, 45, and 60 mg L? 1), for 60 days. In general, Cd did not affect nitrate concentration in the root but had a positive effect on leaves. The reduction of nitrate reductase (NR) in plants exposed to Cd was followed by a... |
Tipo: Artigo de periódico |
Palavras-chave: Ucuuba; Virola Surinamensis; Nitrate reductase; Proline; Sucrose; Reducing sugars; Cadmium. |
Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1131854 |
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Registros recuperados: 65 | |
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