Uso de ácido giberélico em sementes de fruta-do-conde (Annona squamosa L.) visando à produção de mudas em diferentes embalagens

Ferreira, Gisela; Erig, Paulo Roberto; Moro, Edemar

doi:10.1590/s0100-29452002000100039

Cited by 27 publications

(31 citation statements)

References 2 publications

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“…As shown in Figure 1, gibberellic acid, in all concentrations tested, promoted an increase in tamarind plant height. These results confirm the active role in cell division and elongation of this plant growth regulator (HIGASHI et al, 2002) which promotes cell wall extensibility (RAVEN et al, 2001).…”

Section: Results S and Discussion Experiments 1 -Gibberellic Acid (Ga supporting

confidence: 82%

“…Modesto et al (1996), Ferreira et al (2002) and Leonel and Pedroso (2005) reported that the plant growth regulator promoted an increase in stem diameter in Passiflora alata, Citrus limonia and Annona squamosa, respectively. On the other hand, Modesto et al 1999 did not find increase of stem diameter when 150 mg of gibberellic acid L -1 in aqueous solution was applied to 'Cleopatra' tangerine.…”

Section: Results S and Discussion Experiments 1 -Gibberellic Acid (Ga mentioning

confidence: 99%

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Effect of gibberellic acid and the biostimulant stimulate® on the initial growth of tamarind

et al. 2012

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ABSTRACT-Plant growth regulators and biostimulants have been used as an agronomic technique to optimize the production of seedlings in various crops. This study aimed to evaluate the influence of gibberellic acid and the biostimulant Stimulate ® on the initial growth of tamarind (Tamarindus indica L.). The experiments were conducted in a nursery with 50% shading, in a randomized block design with five replications and five plants per plot. Thirty eight days after sowing, the leaves were sprayed seven times a day with 0.0 (control), 0.8, 1.6, 2.4 and 3.2 mL of gibberellic acid L -1 aqueous solution and with 0.0 (control), 6.0,12.0, 18.0, and 24.0 mL Stimulate ® L -1 aqueous solution. Stem diameter (SD), plant height (PH), longest root length (LRL), shoot dry mass (SDM), root dry mass (RDM) and RDM:SDM ratio were evaluated ninety days after sowing. Variance and regression analysis showed that GA 3 at 4% promoted plant growth (height), but had no significant effect on stem diameter, longest root length, shoot and root dry mass and the RDM:SDM ratio. On the other hand, all concentrations of Stimulate ® significantly increased plant height and shoot and root dry mass of tamarind seedlings. Index terms: Tamarindus indica L., plant growth regulators, seedling production. INFLUÊNCIA DO ÁCIDO GIBERÉLICO E DO BIOESTIMULANTE STIMULATE ® NO CRESCIMENTO INICIAL DE TAMARINDEIRORESUMO-O emprego de reguladores e bioestimulantes vegetais como técnica agronômica para se otimizar a produção de mudas tem sido utilizado em diversas culturas. Este trabalho teve como objetivo, avaliar a influência do ácido giberélico e do bioestimulante Stimulate ® , isoladamente, no crescimento inicial de plantas de tamarindeiro (Tamarindus indica L.). Os experimentos foram conduzidos em viveiro telado com 50% de sombreamento, em delineamento em blocos casualizados, com cinco repetições e cinco plantas por parcela. As pulverizações foram iniciadas aos 38 dias após a semeadura (DAS), e cada produto foi ministrado em sete pulverizações foliares diárias, nas concentrações de 0,0 (controle -água), 0,8; 1,6;2,4 e 3,2 mL de ácido giberélico L -1 de solução aquosa e 0,0 (controle -água), 6,0; 12,0; 18,0 e 24,0 mL de Stimulate ® L -1 de solução aquosa. Aos 90 DAS, foram avaliados: o diâmetro do caule, altura da planta, comprimento da maior raiz, massa seca da parte aérea (MSPA) e da raiz (MSR) e a relação MSR/MSPA. Os dados foram submetidos à análise de variância e análise de regressão para os tratamentos, em isolado, GA 3 4% e Stimulate ® . A pulverização foliar com ácido giberélico (GA 3 4%) é eficiente para promover o crescimento em altura de plantas de tamarindeiro, no entanto não promove efeitos significativos sobre o diâmetro do caule, crescimento da maior raiz, massa seca da parte aérea, raiz e na relação MSR/MSPA. Todas as concentrações utilizadas de Stimulate ® , via pulverização foliar, promovem o incremento na altura de planta, massa seca da parte aérea e da raiz de plantas de tamarindeiro. Termos para indexação: Tamarindus indica, reguladores veg...

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Section: Results S and Discussion Experiments 1 -Gibberellic Acid (Ga supporting

confidence: 82%

Section: Results S and Discussion Experiments 1 -Gibberellic Acid (Ga mentioning

confidence: 99%

Effect of gibberellic acid and the biostimulant stimulate® on the initial growth of tamarind

et al. 2012

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“…), who reported fast seed germination using gibberellic acid solutions of 150 mg L -1 to 200 mg L -1 for a period of twelve hours. Similarly, Ferreira et al (2002) observed with seeds of sugar apple (Anona squamosa L.) that the highest concentration being tested (200 mg L -1 ) provided the best germination results. Still on the subject of gibberellic acid for seed germination, other authors obtained better germination results under conditions similar to those described in this work (AÑEZ et al, 2006;FERREIRA, 1996;FUENTES FIALLO et al, 1996;GARCIA et al, 2006;ROSSETO et al, 2000).…”

Section: Resultsmentioning

confidence: 67%

Effect of gibberellic acid and temperature on germination of Vitex montevidensis Cham

Malavasì

Dias²,

Malavasi

2011

CERNE

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This work aims to evaluate treatments that may help improve speed and uniformity of germination in fruit tree species tarumã. Data were obtained from pyrenes (stones) of ripe fruits which in turn were picked from adult trees in the municipality of Vera Cruz do Oeste-PR. Treatments consisted of applying GA 3 solutions at various concentrations (zero, 50 mg L -1 , 100 mg L -1 or 200 mg L -1 ) to pyrenes via immersion for 47 hours, and thermoperiods of alternate 20ºC and 30ºC (8 hours at 20ºC in light conditions, and 16 hours at 30ºC in dark conditions) and constant 30ºC with the same photoperiod. The combination of alternate temperatures of 20ºC and 30ºC with a 200 mg L -1 GA 3 solution resulted in an increase both in germination percentage, from 19.2% to 56.2%, and in the germination speed index, from 0.19 to 3.12, with resulting normal, uniform seedlings.

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“…Por esto la aplicación de una giberelina como el GA 3 que revierte parcialmente la acción del ABA (Chrispeels y Varner, 1967), permite la germinación de las semillas de anón y de otras anonáceas (Pinto, 1976;Hernández, 1993;Ferreira et al, 2002;Stenzel et al, 2003;Da Silva et al, 2007;Lobo et al, 2007).…”

Section: Pg (%)unclassified

La zeatina fomenta la germinación de semillas de anón (Annona squamosa L.)

Moreno

Miranda²,

Martínez³

2013

Rev. Colomb. Cienc. Hortic.

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RESUMENEn Colombia el anón es propagado sexualmente, ya que el método asexual no ha alcanzado resultados ópti-mos. Sin embargo, debido al bajo e irregular potencial germinativo, este método es poco efectivo y los cultivos extensivos son escasos. En semillas de anón común provenientes de Apulo (Cundinamarca), se evaluó el efecto de cuatro concentraciones de zeatina (0,25 mg L -1 ; 0,5 mg L -1 ; 1 mg L -1 y 4 mg L -1 ) sobre la germinación, para lo cual las semillas fueron imbibidas 48 horas en zeatina comercial y posteriormente llevadas a pruebas de germinación en un fitotrón a 35°C. Con el uso zeatina se obtuvieron mejores porcentajes de germinación (69,6% con 1 mg L -1 ), mayores velocidades de germinación (1,91 semillas germinadas/día con 0,25 mg L -1 ) y menores tiempos de germinación (9 días con 0,25 mg L -1 ). ABSTRACTIn Colombia, the sugar apple is propagated sexually because the asexual method has not reached optimal results. However, due to its low and irregular seed germination potential, this method is ineffective and crops are scarce. Using sugar apple seeds from Apulo (Cundinamarca), the effects of four zeatin concentrations (0.25 mg L -1 , 0.5 mg L -1 , 1 mg L -1 , and 4 mg L -1 ) on germination were evaluated by soaking seeds for 48 hours in commercial zeatin, which were then tested for germination in growth chambers at 35°C. The seeds with zeatin had a higher germination percentage (69.6% with 1 mg L -1 ), average germination speed (1.91 germinated seeds/day with 0.25 mg L -1 ), and lower average germination time (9 days with 0.25 mg L -1 ).

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Uso de ácido giberélico em sementes de fruta-do-conde (Annona squamosa L.) visando à produção de mudas em diferentes embalagens

Cited by 27 publications

References 2 publications

Effect of gibberellic acid and the biostimulant stimulate® on the initial growth of tamarind

Effect of gibberellic acid and the biostimulant stimulate® on the initial growth of tamarind

Effect of gibberellic acid and temperature on germination of Vitex montevidensis Cham

La zeatina fomenta la germinación de semillas de anón (Annona squamosa L.)

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