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| Registros recuperados: 32 | |
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| Rodrigues,Cristine; Vandenberghe,Luciana Porto de Souza; Teodoro,Juliana; Oss,Juliana Fraron; Pandey,Ashok; Soccol,Carlos Ricardo. |
| Gibberellic acid (GA3) is an important hormone, which controls plant's growth and development. Solid State Fermentation (SSF) allows the use of agro-industrial residues reducing the production costs. The screening of strains (four of Gibberella fujikuoroi and one of Fusarium moniliforme) and substrates (citric pulp, soy bran, sugarcane bagasse, soy husk, cassava bagasse and coffee husk) and inoculum preparation study were conducted in order to evaluate the best conditions to produce GA3 by SSF. Fermentation assays were carried out in erlenmeyers flasks at 29°C, with initial moisture of 75-80%. Different medium for inoculum production were tested in relation to cells viability and GA3 production by SSF. F. moniliforme LPB 03 and citric pulp were chosen for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gibberellic acid; Fusarium moniliforme; Solid state fermentation; Inoculum; Agro-industrial residues. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700023 |
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| GUILHERME, J. P. M.; BRITO, J. F. de F. de; ANDRADE NETO, R. de C.; LUNZ, A. M. P.; ARAÚJO, C. S. de; SANTOS, R. S. dos. |
| Embora o consumo do açaí tenha crescido sobremaneira durante os últimos anos, a oferta deste parece evoluir em ritmo inferior, o que tem despertado o interesse de produtores no cultivo do açaizeiro e, consequentemente, intensificado a procura por mudas de qualidade. Contudo, o mecanismo de propagação dessa espécie é por meio de sementes, que apresentam germinação lenta e desuniforme, indicando a existência de algum mecanismo de dormência atuando na germinação destas. O presente trabalho teve como objetivo avaliar o uso de um bioestimulador na germinação de sementes e biomassa de plântulas de Euterpe precatoria Mart. |
| Tipo: Parte de livro |
Palavras-chave: Cinetina; Citocinina; Giberelina; Germinación de las semillas; Experimentación en invernadero; Sustancias de crecimiento vegetal; Citoquininas; Açaí; Semente; Germinação; Estufa; Regulador de Crescimento; Ácido Indolbutírico; Auxina; Ácido Giberélico; Euterpe precatoria; Seed germination; Greenhouse experimentation; Plant growth substances; Auxins; Indole butyric acid; Gibberellins; Gibberellic acid; Cytokinins. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1099286 |
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| Rezvani,Mohammad; Zaefarian,Faezeh; Amini,Vajihe. |
| Shepherd's purse (Capsella bursa-pastoris) is a problematic weed in citrus orchards and crop fields in northern Iran. In a series of laboratory and greenhouse experiments, we evaluated the effects that treatment with gibberellic acid (GA3) and potassium nitrate (KNO3), as well as environmental factors, including temperature, the duration of pre-chilling (wet and dry), drought stress, salt stress, pH, and sowing depth, have on seed dormancy breaking and germination in C. bursa-pastoris. Treatment with GA3 strongly stimulated germination of C. bursa-pastoris in conditions of light/dark and continuous darkness. The germination rate was highest (40.08%) for seeds treated with 400 ppm of GA3 in the light/dark condition. Treatment with KNO3 did not significantly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drought and salt stress; Gibberellic acid; Light; Temperature; Sowing depth. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000400002 |
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| Ono,Elizabeth Orika; Leonel,Sarita; Duarte Filho,Jayme; Rodrigues,João Domingos. |
| The effects of storage time and exogenous gibberellic acid on lychee seeds germination were studied. The seeds were removed from ripe fruits, washed, dried, stored at 8°C for 0, 15 and 30 days, and soaked during 24 hours in water and GA3 at 50, 100 and 200 mg.L-1 solutions. As the storage period increased, the germination capacity was lost, and the seeds had a short germinability after 30-day storage period. Gibberellic acid had not significant effect on enhancing both the germination percentage and rate. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gibberellic acid; Gibberellins; Deterioration; Viability; Recalcitrant seed. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000400015 |
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| DESTRO, D.; ARIAS, E. R. A.; MIGLIORANZA, E.; TOLEDO, J. F. F. de; PALUDZYSZYN FILHO, E.. |
| Este trabalho foi realizado, em Londrina, PR, no ano agricola 1982/83, para estudar a acao do ethrel e do acido giberelico como fitohormonios indutores de macho-esterilidade em girassol, aplicando-se em diferentes estadios de desenvolvimento dos capitulos. Os resultados obtidos mostraram que a inducao da macho-esterilidade foi acentuada na cultivar Issanka e pouco expressiva no hibrido DK 180. O acido giberelico foi menos eficiente em causar macho-esterilidade na cultivar Issanka quando aplicado em capitulos com 0,0 a 0,5 cm de diametro, sendo mais eficiente para induzir macho-esterilidade quando aplicado com os diametros dos capitulos variando de 0,5 a 2,0 cm. O ethrel nao apresentou efeito gameticida. |
| Tipo: Artigo de periódico |
Palavras-chave: Macho-esteril; Cultivar Issanka; Ethrel; Brasil; Parana; Sunflower; Male sterility; Variety; Induction.; Ácido Giberélico; Fisiologia; Indução.; Girassol; Helianthus Annuus; Brazil; Gibberellic acid; Physiology.. |
| Ano: 1993 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/444615 |
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| Camargo,María Antonia Martínez; Coronado,Ana Cruz Morillo; Mora,Edilberto Cepeda; Fernández,Sandra Yaneth Mesa. |
| Abstract The genus Passiflora, commonly known as fruits of passion, includes numerous species, including gulupa (Passiflora edulis f. edulis), of nutracetic and economic importance, both for consumption in nature and for its agro-industrial applicability. This research was developed to evaluate the effects of various pre-germinative treatments on the germination of gulupa seeds from the municipality of Ramiriquí (Boyacá), such as: exposure to hydrogen peroxide (H2O2), hypochlorite of sodium (NaOCl), gibberellic acid (GA3), distilled water imbibition and stratification at 4 °C, in varying concentrations and exposure times (24 and 48 hours), using an experimental design completely random, with three repetitions of 50 seed each one. Statistical analysis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Passiflora; Gulupa; Germination; Hydrogen peroxide; Gibberellic acid; Sodium hypochlorite. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000302003 |
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| SANTOS, F. C. dos; ROSA, S. D. V. F. da; COELHO, S. V. B.; CLEMENTE, A. C. S.; FANTAZZINI, T. B.; PEREIRA, C. C.; CAIXETA, F.; FÁVARIS, N. A. B.; BAÚTE, J. L.. |
| During maturation in seeds, metabolic processes dependent on gene expression are controlled by hormones, including abscisic acid and gibberellin. These hormones determine dormancy or the capacity for germination in seeds and may have different expression levels in the endosperm and embryo of coffee seeds. We quantified gene expression in the biosynthetic pathway of gibberellin and abscisic acid in different parts of Coffea arabica L. seeds in pre and post physiological maturity, in order to better understand the germination mechanisms of this species. Coffee fruits were harvested at green, yellowish-green, cherry, over-ripe and dry stages. For studies of gene expression, intact seeds were used in addition to endosperm and isolated embryos. The RNA from... |
| Tipo: Artigo de periódico |
Palavras-chave: QRT-PCR; Coffea Arábica; Gibberellic acid; Abscisic acid. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114204 |
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| Leite,Vagner Maximino; Rosolem,Ciro Antonio; Rodrigues,João Domingos. |
| Soybean is an important crop in Brazil. Nonetheless, there are no reports on the use of plant growth regulator potential in relation to this crop in the national literature. To better understand the role of these compounds, a pot experiment was carried out to study effects of GA3 and cytokinin on the vegetative growth of the soybean. GA3 (50 mg L-1) was applied as seed treatment, leaving plants with water application as control. GA3 (100 mg L-1) and cytokinin (30 mg L-1) were sprayed on leaves at the physiological stage V3/V4, and 15 days after, cytokinin (30 mg L-1), also as foliar spray. Seed treatment decreased plant emergence and initial soybean root growth, but as the season progressed, differences in root growth disappeared; plants were shorter, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Gibberellic acid; Gibberellin; Aminopurin; Plant growth regulator. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300019 |
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| Sacher,Johannes; Saa,Pedro; Cárcamo,Martín; López,Javiera; Gelmi,Claudio A; Pérez-Correa,Ricardo. |
| Background: Calibration of dynamic models in biotechnology is challenging. Kinetic models are usually complex and differential equations are highly coupled involving a large number of parameters. In addition, available measurements are scarce and infrequent, and some key variables are often non-measurable. Therefore, effective optimization and statistical analysis methods are crucial to achieve meaningful results. In this research, we apply a metaheuristic scatter search algorithm to calibrate a solid substrate cultivation model. Results: Even though scatter search has shown to be effective for calibrating difficult nonlinear models, we show here that a posteriori analysis can significantly improve the accuracy and reliability of the estimation.... |
| Tipo: Journal article |
Palavras-chave: Gibberella fujikuroi; Gibberellic acid; Global optimization; Metaheuristics; Nonlinear dynamic models; Parameter estimation; Solid substrate cultivation. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000500007 |
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| Generoso,Andressa Leal; Viana,Alexandre Pio; Carvalho,Virginia Silva; Costa Júnior,Otalício Damásio da. |
| Abstract Dormancy in grape seeds slows the progress of many breeding programs of the crop, culminating in low uniformity and low germination percentages. Conventional methods used to overcome dormancy are time-consuming. Thus, in vitro seed germination emerges as a promising alternative to ensure the germination of grape seeds. In this study, we examined the in vitro germination and vigor of seedlings originating from seeds of ‘Red Globe’, ‘Italia’ and ‘Niagara Rosada’ grapes in growth media supplemented with five concentrations of gibberellic acid (GA3) (0, 1.41, 2.83, 4.24 and 5.66 µmol L-1) for 47 days. The use of GA3 increased seed germination percentage and seedling vigor, in the three varieties. Therefore, for the in vitro germination of seeds of... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Gibberellic acid; Plant tissue culture; Grapes. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000502002 |
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| GRAÇA, M. E. C.; ZANON, A.; VALIO, I. F. M.; COOPER, M. A.. |
| A influência de reguladores de crescimento e da adubação sobre o florescimento e crescimento de Eucalyptus dunnii Maid., de cinco anos de idade, foi determinada em árvores selecionadas de um talhão experimental localizado no Centro Nacional de Pesquisa de Florestas/EMBRAPA, PR. Neste, foram realizadas aplicações de ácido giberélico (GA3) na concentração de 300 mg. l -1 , cinetina a 50 mg. l -1 , combinação das concentrações de GA3 + cinetina, Ethrel a 240 mg. l -1 e 400 g de 10-30-15 (NPK) mais 10 g de micronutrientes. O florescimento não foi influenciado pelos tratamentos empregados. Entretanto, para o crescimento, verificou-se que os maiores incrementos para altura e diâmetro foram obtidos com a aplicação de GA3 + cinetina. A cinetina, isoladamente, teve... |
| Tipo: Artigo de periódico |
Palavras-chave: Acido giberelico (GA3); Cinetina; Ethrel.; Fertilizante; Npk.; Gibberellic acid; Kinetin.. |
| Ano: 1986 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/289691 |
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| GUILHERME, J. P. M.; BRITO, J. F. F. de; ANDRADE NETO, R. de C.; LUNZ, A. M. P.; ARAÚJO, C. S. de; SANTOS, R. S. dos. |
| O açaizeiro solteiro (Euterpe precatoria Mart.) é uma palmeira de estipe único nativa da região amazônica, que ocorre naturalmente no Acre, alto Rio Amazonas e seus afluentes, principalmente em em áreas de várzea e, ocasionalmente, matas de terra firme. De seus frutos é extraída a polpa ou "vinho do açaí", que possui utilização diversificada pela população, bem como pelas indústrias de alimentos, cosméticos, fármacos, entre outras. Este presente trabalho teve como objetivo avaliar influência de diferentes substratos na germinação de sementes e massa seca de plântulas de Euterpe precatoria Mart. |
| Tipo: Parte de livro |
Palavras-chave: Castanha do brasil; Acre; Nuez del brasil; Cinetina; Citocinina; Giberelina; Germinación de las semillas; Experimentación en invernadero; Fertilizantes orgánicos; Sustancias de crecimiento vegetal; Citoquininas; Embrapa Acre; Rio Branco (AC); Amazônia Ocidental; Western Amazon; Amazonia Occidental.; Açaí; Plântula; Semente; Germinação; Fator de Crescimento; Substrato de Cultura; Castanha do Para; Bertholletia Excelsa; Matéria Seca; Estufa; Regulador de Crescimento; Ácido Indolbutírico; Auxina; Ácido Giberélico.; Campo Experimental; Euterpe precatoria; Plant growth substances; Indole butyric acid; Gibberellins; Gibberellic acid; Cytokinins.; Brazil nuts; Auxins; Seed germination; Greenhouse experimentation; Organic fertilizers. |
| Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1099171 |
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| Registros recuperados: 32 | |
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