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| Registros recuperados: 20 | |
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| Moura da Silva, Juanderson; Barbosa da Silva, João Henrique; Eraldo Souza Araújo, José Rayan; Marinho Gomes, Eduardo; Manoel Ferreira de Lima Cruz, José; Veimar da Silva, Antônio; Gledson da Silva, Francisco; de Oliveira Santos, João Paulo; Esfrain Pereira, Walter. |
| Gibberellin is a plant hormone capable of enhancing the productivity of plant’s productivity rants, due to its action in plant physiology, mainly in fruit formation. In this sense, this study aimed to evaluate gibberellic acid levels and application times on the growth and quality of ‘Pérola’ pineapple. The experiment was conducted under field conditions in the municipality of Pedras de Fogo, state of Paraíba, Brazil. The treatments consisted of five levels of gibberellic acid (0.0, 1.5, 3.0, 6.0, and 12.0 mg/plant), distributed in a randomized block experimental design, with four repetitions, in which three applications were made at 50, 80, and 110 days after flower induction. The soluble solids content, fruit height, fruit diameter, and weight were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ananas comosus L.; Gibberellin; Plant Hormones; Ananas comosus L.; Gibberellin; Plant Hormones. |
| Ano: 2022 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6731 |
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| Penckowski, Luis Henrique; Fundação ABC; Zagonel, Jeferson; UEPG; Fernandes, Eliana Cuéllar; UEPG. |
| Visando avaliar os efeitos da aplicação do redutor de crescimento trinexapac-ethyl, em diferentes épocas e doses de nitrogênio, na cultivar de trigo Avante, realizou-se um experimento em Castro, Estado do Paraná, no delineamento em blocos ao acaso, em esquema fatorial 4 x 4, com quatro repetições. Os tratamentos constaram da aplicação de 100 g ha-1 de trinexapac-ethyl entre o primeiro e o segundo nó visível, o segundo e o terceiro nó visível, aplicação sequencial de metade da dose entre o primeiro e o segundo nó visível e metade entre o segundo e o terceiro nó visível e testemunha sem aplicação. As doses de nitrogênio em cobertura foram 90, 135, 180 e 225 kg ha-1. Foram avaliados estande, número de perfilhos, altura de plantas, diâmetro do colmo,... |
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Palavras-chave: 5.01.00.00-9 Agronomia Triticum aestivum L.; Acamamento; Giberelinas; Trinexapac-ethyl Triticum aestivum L.; Lodging; Gibberellin; Trinexapac-ethyl. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1048 |
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| Junior, Rodolfo Linzameyer; UNIOESTE; Guimarães, Vandeir Franciso; UNIOESTE; Santos, Diego dos; UNIOESTE; Bencke, Michel Henrique; UNIOESTE. |
| A soja é o principal produto agrícola mundial, justificando investimentos em tecnologias que visem ao aumento da produção e à redução dos fatores adversos à cultura. Desta forma, este trabalho tem como objetivo avaliar o efeito de retardante vegetal, em diferentes densidades de semeadura sobre o crescimento, componentes de produção, produtividade e acamamento na cultura da soja. O experimento foi desenvolvido no Centro Tecnológico Coopavel - Cascavel, Estado do Paraná. O delineamento experimental constitui-se de blocos inteiramente casualizados, com quatro repetições, em esquema fatorial (6X2), sendo os tratamentos obtidos pela combinação das seis doses do retardante e duas densidades de semeadura. Realizaram-se avaliações a cada 14 dias, a partir de 21... |
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Palavras-chave: 5.01.00.00-9 Agronomia Glycine max (L.) Merrill; Giberelina; Altura de plantas; Densidade de semeadura 5.01.03.00-8 Fitotecnia Glycine max (L.) Merrill; Gibberellin; Plant height; Sowing density. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3547 |
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| Scalon,Silvana P. Q; Pereira,Heloisa H. G; Glaeser,Daniele F; Silva,Jocemar J; Betoni,Roseli; Mussury,Rosilda M. |
| This paper aimed to evaluate the initial growth of "mutambo" seedlings in different conditions of light intensity and treatments with gibberellic acid (GA). The seedlings were kept under full sun and 50% of shading. Sixty days after the emergence, seedlings were sprayed with: 1) 100 mg L-1 GA3; 2) 200 mg L-1 GA3; 3) control. At the end of the appraisals, seedlings height under 50% of shading was compared to the height that were growing under full sun with 200 mg L-1 GA. Stem diameter was lower under shading. Leaf area did not vary among the treatments, but the root system growth was higher under full sun and did not vary among GA levels. The number of stomata, trichomes and epidermal cells on adaxial and abaxial sides was higher under full sun. Total dry... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ecophysiology; Gibberellin; Mutambo. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200027 |
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| Oliveira,W.F.; Lima,E.M.; Gomes,D.I.; Alves,K.S.; Santos,P.M.; Azevedo,G.S.; Mezzomo,R.. |
| ABSTRACT The aim was to evaluate the effect of different doses of two biostimulants on the productivity and canopy structure of Urochloa brizantha cv. Marandu grass in the establishment fase. The study was conducted in Universidade Federal Rural da Amazônia, Parauapebas, Pará, Brazil. One module of 35 plots of 25m² were established. A completely randomized experimental design was used, with seven treatments and five replicates. The treatments included a control, 0.5, 1, and 2kg/ha of biostimulant A (BIOST.A); and 0.25, 0.5, and 1L/ha of biostimulant B (BIOST.B). Three collections were performed. The data for application of the two biostimulants were analyzed separately, using the Dummy variable method and regression analysis. The application of 2kg/ha... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Auxin; Cytokinin; Gibberellin; Forage stimulation; Urochloa brizantha. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000200603 |
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| Vital,Roberto Gomes; Jakelaitis,Adriano; Silva,Fábia Barbosa; Batista,Priscila Ferreira; Almeida,Gabriel Martins; Costa,Alan Carlos; Rodrigues,Arthur Almeida. |
| ABSTRACT The maturing of drift used in the culture of sugar cane can have harmful effects on other crops grown in the vicinity of sugar cane plantations. Among these, sunflower grown in the off-season can have its growth and productivity affected by drift. The objective of this research was to evaluate whether the drift of trinexapac-ethyl and glyphosate promotes changes in the photosynthetic metabolism of sunflower plants. Two trials were carried out to evaluate the effects of these products on gas exchange, chlorophyll fluorescence, chloroplastid pigments, membrane permeability, sugar content, as well as shikimic acid and malondialdehyde concentration in the treated plants. In the first experiment, we tested glyphosate in doses of 0 (control); 3.6; 7.2;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gibberellin; EPSPs; Photosystem II; Photochemical efficiency. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100033 |
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| Costa,Jefferson da Luz; Silva,André Luís Lopes da; Gollo,André Luiz; Brondani,Gilvano Ebling; Santos,Leandro Freire dos; Rodrigues,Cristine; Vandenberghe,Luciana Porto de Souza; Soccol,Carlos Ricardo. |
| ABSTRACT Nidularium procerum and Nidularium innocentii (Bromeliaceae) were cultivated in vitro on media supplemented with different sources and levels of GA3 (gibberellic acid). These sources were the commercial powder (analytical degree) and fermented extract obtained by Fusarium moniliforme via solid state fermentation. The in vitro elongation and rooting of these plants were evaluated after 50 days of cultivation. The GA3 present in the fermented extract possess the same effect of purified GA3 (analytical degree) for the increase of the height of aerial part of shoots of N. innocentii, but not for the N. procerum being the GA3 fermented extract in a lesser degree. The GA3 fermented extract influences negatively the rooting in N. innocentii, while GA3... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Shelf life; Bromeliad; Gibberellin; Solid state fermentation; Micropropagation; Biofactory. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100427 |
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| Figueiredo,Júnia Rafael Mendonça; Paiva,Patrícia Duarte de Oliveira; Silva,Diogo Pedrosa Corrêa da; Paiva,Renato; Souza,Rafaela Ribeiro; Reis,Michele Valquíria dos. |
| ABSTRACT Tropical species may require higher temperatures as well as higher growth regulator concentrations for in vitro development. Since these conditions may affect plant metabolism, the objective of this study was to identify how different temperatures and gibberellin concentrations may affect the in vitro development of strelitzia embryos, analyzing the effect on ROS and cytogenetic stability. Zygotic embryos were cultivated on MS medium supplemented with 5, 10 and 20 µM GA3 under temperatures of 25 °C, 30/25 °C and 30 °C. After 60 days, higher embryonic germination rate (72%) and shoot length of plantlets (3.14 cm) were observed on medium containing 20 µM gibberellic acid (GA3). At this concentration, there was an increase in nitrate reductase... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant; Embryo culture; Gibberellin; Nitrate reductase.. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542021000100204 |
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| Lima,Juliana Domingues; Ansante,Nathalia Felipe; Nomura,Edson Shigueaki; Fuzitani,Eduardo Jun; Silva,Silvia Helena Modenese-Gorla da. |
| Gibberellic acid (GA3) induces flowering of plants of various genera of the Araceae family. Therefore, it was evaluated the effect of GA3 on the growth and yield of Anthurium andraeanum cv. 'Apalai'. For this purpose, micropropagated seedlings were planted in nursery beds under 70% shade. The experimental design was completely randomized in subdivided plots with eight replications. The growth regulation effect was assessed in each plot and the time to flowering after the start of the treatments was assessed in each subplot. The GA3 concentrations were 0, 150, 300, 450 and 600mg L-1, applied every 60 days by spraying on the leaves. The applications and evaluations started after the production of marketable floral stems. Every month the number of leaves was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthurium andraeanum Linden ex André; Gibberellin; Growth regulator; Flowering. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000801327 |
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| Dousseau,Sara; Alvarenga,Amauri Alves de; Alves,Eduardo; Chaves,Izabel de Souza; Souza,Elma dos Santos; Alves,Juliana da Silva. |
| In this work we attempted to characterize the diaspores and the germination process of Piper aduncum L., as well as to verify the influence of the interaction between presence and absence of light (photoperiod of 12 hours and dark) and temperature (25 °C, 30 °C and 20-30 °C) and also of gibberellin (0, 50, 100, 200 and 400 mg L-1) on the root protrusion and normal seedlings formation. The diaspores are very small with a thousand seed weight of 0.3645 g, 13% moisture and protein reserve. Diaspores are strict positively photoblastic in the tested temperature range and the optimum temperature for root protrusion was 30 °C, while for normal seedlings was 25 °C. The previous permanence in the dark led to an increase in the speed of root protrusion and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Germination; Gibberellin; Light; Post-germination; Temperature. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042011000300005 |
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| GIOVANAZ,MARCOS ANTÔNIO; FACHINELLO,JOSÉ CARLOS; SPAGNOL,DANIEL; WEBER,DIEGO; CARRA,BRUNO. |
| ABSTRACT The thinning peach fruits is to reduce the load of the plant with the aim to improve the size, flavor and color of the remaining fruits. However, the practice of thinning requires high demand of manpower and become more expensive the production costs. The objective of this study was to evaluate the reduction of flowering buds and the time of hand thinning in ‘Maciel’ peach after gibberellic acid (GA3) application at different times and concentrations. The experiments were performed in the harvests of 2012 and 2013 in a commercial peach orchard located in the county of Morro Redondo, RS. The plants of cultivar Maciel, in 2012, were sprayed with four doses of GA3 0, 25, 75 and 125 mg L-1, at different times 20, 40 and 60 days after full bloom... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Peach; Gibberellin; Return bloom; Inhibition of flowers; Manpower; Stone fruit trees. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000200203 |
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| SOUZA,KELLINA OLIVEIRA DE; MOURA,CARLOS FARLEY HERBSTER; LOPES,MÔNICA MARIA DE ALMEIDA; RABELO,MARCELA CRISTINA; MIRANDA,MARIA RAQUEL ALCÂNTARA DE. |
| ABSTRACT The goal of this study was study the postharvest quality of acerola clone BRS 236 (Malpighia emarginata D.C.) which was harvested at physiological maturity and submitted to four treatments under immersion during 5 minutes at 25 °C, which are: control (water), 60 mg L-1; 120 mg L-1 and 180 mg L-1. After treatment the fruits were packed in polystyrene trays and placed with polyethylene film and then stored at 10 ± 2 °C and 85 ± 5% RH for 12 days. Were analyzed in three days intervals (0, 3, 6, 9 and 12 days): skin color, firmness, pH, titratable acidity, soluble solids, SS/TA ratio, vitamin C and yellow flavonoids. Vitamin C, anthocyanins and yellow flavonoids were not influenced by treatments with GA3 at the end of 12-day of cold storage at 10 ºC.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Color; Storage; Firmness; Vitamin C; Gibberellin. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000400301 |
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| Silva,Pricila Santos da; Kirinus,Marines Batalha Moreno; Barreto,Caroline Farias; Lamela,Carlos Sebastián Pérez; Malgarim,Marcelo Barbosa; Mello-Farias,Paulo. |
| Abstract The ripening of grapes is impaired by climatic conditions due to the prolonged rainy season and thus facilitates the proliferation of diseases such as grape clusters rotting, caused by the fungus Botrytis cinerea, even before the ideal harvesting point. The aim of the study was to evaluate the effect of gibberellic acid (GA3) on rot and on physical-chemical quality of ‘Sauvignon Blanc’ grapevine. The experiment was carried out in the production season of 2016 and 2017 in Campanha region in Rio Grande do Sul, Brazil. The GA3 treatments were at the doses of 0 (control); 2; 4; 6 and 8 mg L-1 of GA3. The percentage of clusters rotting and maturation index decreased, however, the titratable acidity increased with GA3 doses. The cluster and rachis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gibberellin; Grapevines; Cluster stretching. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000400402 |
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| Dalanhol, Samanta Jaqueline; Mantoan, Luís Paulo Benetti; Amaro, Amanda Cristina Esteves; Ferreira, Gisela. |
| The aim of this study was to evaluate the effects of the application of plant growth regulator on gas exchange in A. emarginata seedlings subjected to different NaCl concentrations. We evaluated the gas exchange in A. emarginata seedlings subject to the presence and absence of plant growth regulator consisting of kinetin, gibberellic acid, and indolbutyric acid and three concentrations of NaCl (0 mM, 50 mM, and 100 mM). When assessing these factors individually, it was observed that in the presence of plant growth regulators, there was a reduction in stomatal conductance and transpiration, and NaCl concentration (50 mM and 100 mM) caused a reduction in CO2 assimilation, stomatal conductance, and transpiration. There was no significant interaction between... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Auxin; Cytokinin; Gibberellin; Photosynthesis; Sodium chloride.. |
| Ano: 2018 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/16139 |
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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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| Registros recuperados: 20 | |
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