|
|
|
| Registros recuperados: 22 | |
|
|
| 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 |
| |
|
| |
|
|
| GOUVEA,DRIELLY S.; CHAGAS,KRISTHIANO; CIPRIANO,JAMILE L.D.; LOPES,JOSÉ CARLOS; SCHMILDT,EDILSON R.; OTONI,WAGNER C.; SCHMILDT,OMAR; ARAUJO,CAROLINE P. DE; ALEXANDRE,RODRIGO S.. |
| Abstract: Somatic embryogenesis from explants from hermaphrodite papaya mother plants is an alternative for the production of true-to-type plants without the need for sexing. This study aimed to analyze hormonal and osmotic inducers in different somatic embryogenesis stages in the commercial hermaphrodite hybrid papaya UENF/Caliman 01. Leaf disks from in vitro shoots originated from ex vitro hermaphrodite plants were cultured in induction medium supplemented with different concentrations of 2,4-D (6, 9, 12, 15, and 18 μM) and 4-CPA (19, 22, 25, 28, and 31 μM). After 90 days, the formation of somatic embryos was verified. The 2,4-D induced the formation of light brown calli with low frequency (20%) of somatic embryogenesis. However, 4-CPA (25 μM) induced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abscisic acid; Auxins; Carica papaya L.; Gibberellic acid; Hermaphrodite explants; Polyethylene glycol. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000500856 |
| |
|
|
| 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 |
| |
|
|
| 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 |
| |
|
|
| Álvarez Armenta, Rosario. |
| Los experimentos se efectuaron en dos huertas comerciales de limón mexicano, ubicadas en Tecomán, Colima, México, durante los años 2003 y 2004. En ambos casos se determinaron los efectos de las aplicaciones precosecha, con diferentes concentraciones de reguladores del crecimiento, sobre el follaje de árboles de limón; en el primer año se probaron concentraciones de ácido giberélico (30, 20 y 10 mg∙L-1) y en el segundo año se aplicaron combinaciones de ácido giberélico, AG3 (Biogib®), N6-benziladenina (BA) (SIGMA) y ácido-3-indolbutírico (AIB) (SIGMA). Las concentraciones usadas de AG3 fueron 10 y 20 mg∙L-1 y en BA y AIB 5 y 15 mg∙L-1. En ambos experimentos el efecto de los reguladores de crecimiento se evaluó durante la poscosecha al final de su... |
| Tipo: Tesis |
Palavras-chave: Ácido giberélico; Benziladenina; Ácido indolbutírico; Citrus aurantifolia; Daños por frío; Doctorado; Fisiología Vegetal; Gibberellic acid; Benzylaminopurine; Indole-3-butyric acid; Chilling injury. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1671 |
| |
|
| |
|
| |
|
|
| 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 |
| |
|
|
| Coello,Christian Yanelly; Miceli,Clara Luz; Orantes,Carolina; DenDooven,Luc; Gutiérrez,Federico Antonio. |
| An in vitro culture procedure was developed to induce shoots and roots of Guarianthe skinneri (Orchidaceae) plantlets regenerated from seed-derived protocorms on a Murashige and Skoog (MS) médium supplemented with 6-benzyladenine (BA), indole-3-acetic acid (IAA), a-naftalenacetic acid (NAA) and gibberellic acid (GA3). A máximum of 10.6 shoots was obtained with 16.1 μM NAA, 17.1 μM IAA, 6.3 x 10-9 μM GA3 and 0.0023 μM BA. A máximum of 4.0 roots on each shoot with 5.4 μM NAA, 17.1 μM IAA, 0.001 μM AG3 and 4.6 x 10-9 μM BA. Máximum shoot and root length was obtained with a minimum of GA3, but a máximum IAA. GA3, was the main factor controlling shoot and root induction and elongation. |
| Tipo: Journal article |
Palavras-chave: 6-benzyladenine; Indole-3-acetic acid; A-naftalenacetic acid; Gibberellic acid; Shoot induction; Rooting. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432010000100003 |
| |
|
| |
|
|
| GUIMARÃES, C. M.; STONE, L. F.; SARMENTO, P. H. L.. |
| Objetivou-se determinar o efeito da aplicação de suplementos químicos agrícolas no feijoeiro, cultivar BRS Estilo, em Sistema Plantio Direto (SPD). Foram conduzidos dois experimentos, no inverno de 2018 e de 2019, na Embrapa Arroz e Feijão, em Santo Antônio de Goiás, GO, avaliando os efeitos dos seguintes tratamentos: 1) Gesso agrícola, 200 kg ha-1, na semeadura; 2) Boro, 1 kg ha-1, na semeadura; 3) MAP via foliar, 1,5 kg ha-1, em ambos os estádios, V4 e R5; 4) Ca via foliar, 680 g ha-1, em ambos os estádios, V4 e R5; 5) Boro via foliar, 100 g ha-1, também em ambos os estádios, V4 e R5; e 6) bioestimulante, 0,5 L ha-1, em V4. Usou-se o delineamento de blocos ao acaso com quatro repetições e a adubação conforme a análise química do solo e os tratos... |
| Tipo: Folhetos |
Palavras-chave: Selo ODS 2; Objetivo de desenvolvimento sustentável; Feijão; Phaseolus Vulgaris; Nutriente; Método de Aplicação; Estimulante de Crescimento Vegetal; Cálcio; Ácido Giberélico; Ácido Indolbutírico; Produtividade; Beans; Calcium; Kinetin; Gibberellic acid; Indole butyric acid; Yields; Nutrients. |
| Ano: 2022 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1150262 |
| |
|
|
| Delebecq, Gaspard; Schmidt, Sabine; Ehrhold, Axel; Latimier, Marie; Siano, Raffaele. |
| The biological processes involved in the preservation, viability, and revival of long‐term dormant dinoflagellate cysts buried in sediments remain unknown. Based on studies of plant seed physiology, we tested whether the revival of ancient cysts preserved in century‐old sediments from the Bay of Brest (France) could be stimulated by melatonin and gibberellic acid, two molecules commonly used in seed priming. Dinoflagellates were revived from sediments dated to approximately 150 years ago (156 ± 27, 32 cm depth), extending the known record age of cyst viability previously established as around one century. A culture suspension of sediments mixed with melatonin and gibberellic acid solutions as biostimulants exhibited germination of 11 dinoflagellate taxa... |
| Tipo: Text |
Palavras-chave: Alexandrium; Cyst; Dinoflagellate; Gibberellic acid; Melatonin; Paleoecology; Priming; Scrippsiella; Resurrection ecology. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00627/73960/73321.pdf |
| |
|
|
| Ribeiro, Maitê dos Santos; Steffens, Cristiano André; Oliveira, Luciana Magda; Garcia, Cristhyane; Pikart, Tiago Georg; Souza, Gabriely Koerich. |
| Este trabalho objetivou avaliar a eficiência de tratamentos pré-germinativos na promoção da germinação e crescimento inicial de plântulas de palmiteiro. Os tratamentos avaliados foram: controle, imersão em solução de GA3, exposição ao etileno, imersão em água, imersão em H2SO4, escarificação mecânica, estratificação por 30 dias a 10°C, e escarificação seguida de estratificação. A imersão de sementes em solução de ácido giberélico (GA3; 2000 µL L-1 durante 24 h) ou sua exposição ao etileno (1000 µL L-1 durante 24 h) são eficientes para a promoção da emergência e crescimento inicial de plântulas de palmiteiro. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos Florestais; Silvicultura; Tecnologia de Sementes Florestais Euterpe edulis; Dormência; Etileno; Ácido giberélico Euterpe edulis; Dormancy; Ethylene; Gibberellic acid. |
| Ano: 2015 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/663 |
| |
|
| |
|
| |
|
|
| MOHAMED,N.; TAHA,R.M.; RAZAK,U.N.A.A.. |
| ABSTRACT: In this study, the micropropagation of Impatiens balsamina was established from stem and shoot explants. The effects of GA3 and glutathione on the morphogenesis of this species were also investigated, in order to induce in vitro flowering. It was found that the optimum in vitro plant regeneration was achieved on MS medium supplemented with 1.0 mg L-1 GA3 and in vitro flowering was also obtained from the same medium after 4 weeks of culture. To understand cellular behavior during in vitro flowering, Mitotic Index (MI), chromosome counts, measurement of mean cell and nuclear areas, DNA measurements and ploidy levels were analyzed from in vivo plants, in vitro grown plants and plantlets that flowered in vitro. The chromosome count was the same for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Regeneration; Gibberellic acid; Glutathione; Flowering response; Cellular behavior and acclimatization. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100236 |
| |
|
| |
|
|
| 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 |
| |
|
| |
| Registros recuperados: 22 | |
|
|
|
