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Journal articles on the topic 'Gibberellic acid – 3 (GA3)'

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Published: 2 June 2025

Last updated: 31 July 2025

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1

Voytenko, Lesya, Valentyna Vasyuk, Lidia Babenko, Mykola Shcherbatiuk, Kateryna Romanenko, and Iryna V. Kosakivska. "Pre-sowing treatment of acorns with gibberellic acid and N-hexanoyl-L-homoserine lactone induced changes in growth and hormonal balance of Quercus robur L. seedlings." Forestry Studies 80, no. 1 (2024): 127–41. https://doi.org/10.2478/fsmu-2024-0008.

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Abstract This study aimed to assess and compare the impact of priming with gibberellic acid (GA3) and N-hexanoyl-L-homoserine lactone (C6-HSL) on acorn germination, seedling growth, and the balance of endogenous phytohormones in 47-day-old seedlings of pedunculated oak (Quercus robur L.). We hypothesized that exogenous GA3 and C6-HSL induce changes in hormonal homeostasis, which activate the germination of acorns and growth of seedlings. Acorns were soaked for 24 hours in water (control) and solutions of gibberellic acid (50 mg/L) and C6-HSL (300 ng/ml). The dynamics and distribution of endoge

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2

Peşteanu, Ananie, Dmitri Mihov, and Alexei Ivanov. "Acţiunea regulatorilor de creştere asupra rezistenței la temperaturile scăzute din perioada de înflorire, gradului de legare şi producţiei de fructe la cultura părului." Stiinta Agricola, no. 2 (December 22, 2019): 35–44. https://doi.org/10.5281/zenodo.3590274.

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The experimental plot was placed in the orchard &bdquo;Terra Vitis” Ltd. founded in 2010 year. The research was conducted during the period of 2017 year. The study subject of the experience was Vystavochnaya and Noyabrskaya pear varieties, grafted on BA 29. The trees were trained as slender spindle system. The distance of plantation is 4.0 x 2.0 m. The objective of the present study was to evaluate the resistance to low temperatures at flowering, the setting of reproductive organs, fruit production and its quality. The treatments were: 1. Control (without treatment); 2. Gibberellic acid

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3

Reynolds, Andrew G., and Christiane de Savigny. "Influence of Girdling and Gibberellic Acid on Yield Components, Fruit Composition, and Vestigial Seed Formation of `Sovereign Coronation' Table Grapes." HortScience 39, no. 3 (2004): 541–44. http://dx.doi.org/10.21273/hortsci.39.3.541.

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Vestigial seeds of `Sovereign Coronation' table grapes frequently form partial seedcoats that are perceptible during consumption. This problem was addressed through cane/cordon girdling and gibberellic acid (GA3) sprays. `Sovereign Coronation' vines were subjected to one of five treatments [untreated control; cane/cordon girdled; 15 ppm GA3 at bloom (GA1); GA1 + 40 ppm GA3 14 days later (GA2); GA2 + 40 ppm GA3 14 days later]. GA3 had no effect on yield or clusters per vine, but postbloom GA3 treatments increased cluster and berry weights and reduced berries per cluster. Fruit maturity was not

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4

Chen, Wen-Shaw, Hsueh-Wen Chang, Wen-Huei Chen, and Yih-Shyan Lin. "Gibberellic Acid and Cytokinin Affect Phalaenopsis Flower Morphology at High Temperature." HortScience 32, no. 6 (1997): 1069–73. http://dx.doi.org/10.21273/hortsci.32.6.1069.

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Gibberellin A3 (GA3: 1, 3, or 5 (μg/shoot), 6N-benzyladenine (BA: 1, 3, or 5 μg/shoot), or both were applied to the flowering shoots of a white hybrid Phalaenopsis orchid (Leda) when they were 2 to 3 cm (stage 1, no flower primordial long at high temperature (30 °C day/25 °C night). When flowering shoots were treated with GA3, alone, deformed flowers were more frequent with increasing GA3 concentrations. The occurrence of GA3-induced deformed flowers was prevented by BA at the same dose as GA3 when applied 4 days after GA3 treatment. BA (1, 3, or 5 μg/shoot) was also applied 4 days before (tim

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5

Rodrigues, Cristine, Luciana Porto de Souza Vandenberghe, Juliana Teodoro, Juliana Fraron Oss, Ashok Pandey, and Carlos Ricardo Soccol. "A new alternative to produce gibberellic acid by solid state fermentation." Brazilian Archives of Biology and Technology 52, spe (2009): 181–88. http://dx.doi.org/10.1590/s1516-89132009000700023.

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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%.

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6

Krewer, Gerard, Scott NeSmith, Mark Rieger, and Ben Mullinix. "GIBBERELLIC ACID ENHANCES FRUIT SET OF PHYSICALLY DAMAGED BLUEBERRY FLOWERS." HortScience 30, no. 3 (1995): 430c—430. http://dx.doi.org/10.21273/hortsci.30.3.430c.

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Rabbiteye blueberry (Vaccinium ashei R.) flowers often suffer slight freeze damage that prevents fertilization and fruit development. To determine if gibberellic acid (GA3) might be useful in rescuing freeze-damaged flowers the following treatments were applied before anthesis to two cultivars at different locations: 1) undamaged control, 2) approximately two-thirds of the corolla and most of the style removed, 3) approximately half of the style removed, and 4) ovules lanced with an insect pin by driving it through the equator of the undeveloped berry until the point came out the other side. H

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7

Johnson, Jon R., James W. Rushing, and Janice R. McGuinn. "Gibberellic Acid Influences Petiole Characteristics and Postharvest Quality of Fresh-market Spinach." HortScience 24, no. 5 (1989): 855. http://dx.doi.org/10.21273/hortsci.24.5.855.

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Abstract Gibberellic acid (GA3) increases stem elongation and results in more upright growth habit of several crops, including spinach (Spinacia oleracea L.) (3, 4). Treatment of spinach grown for processing and fresh market with GA3 increased yield and upright growth habit (1, 2). Gibberellic acid has not been evaluated for use on spinach grown in the southeastern United States for the prepackaged fresh market. The objectives of these studies were to determine the influence of GA3 rate on plant growth, yield, and post-harvest quality of prepackaged spinach

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8

Ramalho, Aline Bueno, and Lúcia Filgueiras Braga. "Plant growth regulators in the germination of Diospyros hispida A. DC. (EBENACEAE) seeds." Research, Society and Development 10, no. 2 (2021): e27110212471. http://dx.doi.org/10.33448/rsd-v10i2.12471.

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Plant growth regulators in the germination of Diospyros hispida A. DC. (Ebenaceae) Seed. Diospyros hispida species is a native fruit that has long germination period, hindering seedling production. The aim of this work was to evaluate the germination of Diospyros hispida seeds under the effect of gibberellic acid and biostimulant applications. Four replicates of 25 seeds per treatment were used. Treatments were: T1 - distilled water, T2, T3 and T4 - GA3 solutions at 100, 150 and 200 mg L-1, respectively, T5 - Immersion for 24 hours in distilled water with aeration, T6, T7 and T8 - Immersion fo

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9

Baba, Mourad, Ibtissam Mzabri, Jamal Mimouni, Noureddine Kouddane, and Abdelbasset Berrichi. "THE EFFECT OF THE FLORAL APPLICATION OF GIBBERELLIC ACID ON UNPOLLINATED INFLORESCENCES OF THE DATE PALM CULTIVAR ASSIANE (Phoenix dactylifera L.): A CASE STUDY OF FIGUIG OASIS, MOROCCO." Journal of Experimental Biology and Agricultural Sciences 9, no. 3 (2021): 287–93. http://dx.doi.org/10.18006/2021.9(3).287.293.

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The objective of the present study was to evaluate the effect of Gibberellic Acid in mitigate the phenomenon of parthenocarpy and improve the fruit set in the date palm cultivar Assiane at Figuig Oasis in Morocco. For this, four different concentrations of Gibberellic Acid (GA3) viz., 5, 50, 100, and 200 ppm were applied on unpollinated inflorescences in two phases. The first dose of GA3 is applied at the time of spadices burst while the second one is applied after the seven days of the first one. The results obtained from the study showed that the application of gibberellic acid on unpollinat

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10

Belakbir, A., J. M. Ruiz, and L. Romero. "Yield and Fruit Quality of Pepper (Capsicum annuum L.) in Response to Bioregulators." HortScience 33, no. 1 (1998): 85–87. http://dx.doi.org/10.21273/hortsci.33.1.85.

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To test the effectiveness of different bioregulators in enhancing bell pepper (Capsicum annuum L.) yield and fruit quality, the commercial bioregulators CCC, NAA, GA3, and Biozyme® were sprayed on plants at flower initiation, followed by two additional applications at 30-day intervals. Biozyme produced a significant increase in total yield but ≈40% of the fruit were not marketable. Treatment with NAA produced the highest yield of marketable fruit. Treatments did not affect fruit firmness compared to the control. Gibberellic acid increased fruit ascorbic acid and citric acid concentrations and

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11

Belakbir, A., J. M. Ruiz, and L. Romero. "Yield and Fruit Quality of Pepper (Capsicum annuum L.) in Response to Bioregulators." HortScience 33, no. 1 (1998): 85–87. http://dx.doi.org/10.21273/hortsci.33.1.0085.

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To test the effectiveness of different bioregulators in enhancing bell pepper (Capsicum annuum L.) yield and fruit quality, the commercial bioregulators CCC, NAA, GA3, and Biozyme® were sprayed on plants at flower initiation, followed by two additional applications at 30-day intervals. Biozyme produced a significant increase in total yield but ≈40% of the fruit were not marketable. Treatment with NAA produced the highest yield of marketable fruit. Treatments did not affect fruit firmness compared to the control. Gibberellic acid increased fruit ascorbic acid and citric acid concentrations and

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12

Facteau, T. J., K. E. Rowe, and N. E. Chestnut. "Firmness of Sweet Cherry Fruit following Multiple Applications of Gibberellic Acid." Journal of the American Society for Horticultural Science 110, no. 6 (1985): 775–77. http://dx.doi.org/10.21273/jashs.110.6.775.

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Abstract Multiple applications (1-3) of 10 and 50 ppm GA3 to ‘Bing’ and ‘Lambert’ (Prunus avium L.) sweet cherries increased fruit firmness and weight, and delayed harvest. Firmness was positively related to dose of GA3 (number of applications × concentration), soluble solids (SS), and In leaf/fruit ratio. GA3 interacted with SS so that the effect of GA3 dose on firmness was increased at higher SS levels. Fruit coloring was delayed by GA3. Chemical name used: gibberellic acid (GA3).

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13

Tawfiq, Arwa A. "Estimation levels of Indol acetic acid (IAA) and Gibberellic acid (GA3) from dry bakery yeast Saccharomyces cereviciae." Journal of Biotechnology Research Center 4, no. 2 (2010): 94–100. http://dx.doi.org/10.24126/jobrc.2010.4.2.133.

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The level of endogenous free, bound and total auxin (Indol-3-acitic acid, IAA) and gibberellic acid (GA3) were examined in dry bakery yeast. For determination of the levels of these plant growth regulators level, used spectrophotometer. The results show that Saccharomyces cereviciae was produced IAA and GA3. IAA level was 29.86 µg/ml, 198 µg/ml at 222nm and 280nm wavelengths respectively and GA3 level was 799 µg/ml at 254nm.

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14

Pavlista, Alexander D., Dipak K. Santra, James A. Schild, and Gary W. Hergert. "Gibberellic Acid Sensitivity among Common Bean Cultivars (Phaseolus vulgaris L.)." HortScience 47, no. 5 (2012): 637–42. http://dx.doi.org/10.21273/hortsci.47.5.637.

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To lower seed yield loss from directly harvested common bean or dry bean, height of the lower pod-bearing nodes needs to be raised. The objective of this greenhouse study was to stimulate lower stem elongation by gibberellic acid (GA3) of dry bean cultivars. Seeds of cv. Matterhorn, erect indeterminate Type II, and cv. Poncho, prostate indeterminate Type III, were dipped in GA3 at 62.5 to 16,000 ppm and planted. After 14 d, the height of the unifoliate and first trifoliate nodes showed maximum stimulation of stem elongation by 1000 ppm GA3 for ‘Poncho’ and by 2000 ppm for ‘Matterhorn’. Applica

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15

Ferguson, L., T. A. Wheaton, F. S. Davies, and M. A. Ismail. "14C-Gibberellic Acid Uptake, Translocation, Persistence, and Metabolism in Grapefruit." Journal of the American Society for Horticultural Science 111, no. 6 (1986): 926–32. http://dx.doi.org/10.21273/jashs.111.6.926.

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Abstract The uptake, translocation, and metabolism of 14C-gibberellic acid (14C-GA3) was studied in 3-year-old container-grown ‘Marsh’ grapefruit trees (Citrus paradisi Macf.). A total of 1.65 × 105 disintegrations per min (dpm) in 200 μl of solution was applied evenly over the entire fruit surface, or, on both surfaces of 3 to 5 subtending leaves of a fruit. Absorption of 14C-GA3 by leaves and peel began within 1 hr of application and continued for 8 hr. Translocation of labeled material from leaves to peel and the reverse began 4 to 8 hr after application and continued for 4 weeks. No labele

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16

Sałata, A., R. Gruszecki, and J. Dyduch. "The effect of gibberellic acid GA3 on morphological features of artichoke (Cynara scolumus L.)." Modern Phytomorphology 4 (April 1, 2013): 87–90. https://doi.org/10.5281/zenodo.161191.

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An artichoke is a commonly cultivated vegetable in the Mediterranean region. It is cultivated for an undeveloped flower head. Because of high thermal requirements in Poland the artichoke is cultivated as an annual plant. In the years 2009-2011 the research on the influence of gibberelic acid (GA 3 ) on yielding and morphology of artichoke plants was conducted. In order to establish the optimal date of spraying and development stage of plants GA 3 was used in 2 different variants: spraying done once at the stage of 8 leaves, spraying done twice at the stages of 8+12 leaves, in comparison to the

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17

Chng, Mun Wye, and Kimberly A. Moore. "Differences in Inflorescence Numbers and Endogenous Gibberellic Acid Levels in ‘Afterglow’ Bougainvillea." HortTechnology 30, no. 6 (2020): 650–53. http://dx.doi.org/10.21273/horttech04673-20.

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Bougainvillea (Bougainvillea sp.) plant inflorescence number will vary in response to multiple cues such as changes in temperature, water, light intensity, pruning, and photoperiod. Previous research reports that the application of plant growth regulators (PGRs) to bougainvillea grown under varying photoperiods improved inflorescence number, probably as a result of changes in gibberellic acid (GA) levels. There are many bioactive plant GAs, but we chose to investigate differences in gibberellic acid 3 (GA3) levels and inflorescence number in response to the application of ethephon (2-choloreth

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18

Afrose, Samia Nur, Md Hasanuzzaman Akand, Zannatul Abira, et al. "Effect of Potassium and Gibberellic Acid on Some Growth Parameters and Yield of Okra." International Journal of Plant & Soil Science 36, no. 9 (2024): 712–22. http://dx.doi.org/10.9734/ijpss/2024/v36i95020.

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The experiment was conducted at the Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka during April to August 2015. BARI Dherosh-1 was used in this experiment. The experiment consisted of two factors viz., Potassium fertilizer as K0: 0 kg K2O/ha (control), K1: 60 kg K2O/ha, K2: 90 kgK2O/ha and K3: 120 kg K2O/ha; and Gibberellic acid (3 levels) as G0: 0 ppm GA3 (control) G1: 60 ppm GA3, G2: 90 ppm GA3 respectively. The experiment was laid out in Randomized Complete Block Design with three replications. All the parameters were significantly influenced by different levels of potass

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19

Fellman, Cynthia, Emily Hoover, Peter D. Ascher, and James Luby. "Gibberellic Acid-induced Seedlessness in Field-grown Vines of `Swenson Red' Grape." HortScience 26, no. 7 (1991): 873–75. http://dx.doi.org/10.21273/hortsci.26.7.873.

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We evaluated the extent to which `Swenson Red' seeded grape (Vitis × spp.) responded to single and repeated GA3 applications to induce seedless fruit development. Field studies were conducted to test the time of pre-anthesis GA3 application (18, or 24 May or 3 June), the usefulness of postanthesis application, the optimum GA3 concentration (0, 0.075, 0.15, or 0.3 mm), and the method of application. The treatment dates that gave a high percentage of seedless berries with an acceptable berry count per cluster were 24 May with postanthesis application and 3 June pre-anthesis only. The optimum GA3

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20

Litwińczuk, Wojciech, Ewa Okołotkiewicz, and Iwona Matyaszek. "Development of in vitro shoot cultures of strawberry (Fragaria × ananassa Duch.) ‘Senga Sengana’ and ‘Elsanta’ under the influence of high doses of gibberellic acid." Folia Horticulturae 21, no. 2 (2009): 43–52. http://dx.doi.org/10.2478/fhort-2013-0137.

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Abstract In this study, the influence of gibberellic acid (GA3) on strawberry in vitro shoot culture growth and development was investigated. ‘Senga Sengana’ and ‘Elsanta’ clones were grown on the medium recommended by Boxus (1999), supplemented with BA (0.5 mg dm-3), IBA (0.1 mg dm-3), glucose (40.0 g dm-3) and GA3 (0.1 - control, 1.0, 2.0, 5.0, 10.0 mg dm-3). In general, gibberellic acid improved axillary shoot elongation and reduced the growth of callus as well as the formation of roots and the development of adventitious shoots. GA3 applied at a concentration of 1.0-2.0 mg dm-3 significant

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21

Sunardi, Sunardi, Yateman Yateman Arryanto, and Sutarno Sutarno. "ADSORPTION OF GIBBERELLIC ACID (GA₃) ONTO ACID ACTIVATED KAOLIN." Indonesian Journal of Chemistry 10, no. 3 (2010): 320–26. http://dx.doi.org/10.22146/ijc.21437.

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Preparation, activation and adsorption study of natural kaolin from Tatakan, Tapin, South Kalimantan have been conducted. The activation of kaolin was done using 6 M HCl solutions at 90 °C for 3 h. The characterizations of kaolin were carried out by Fourier Transform Infrared, X-ray diffraction, and surface area analyzer. Adsorption parameters studied included the effect of pH, contact time, and concentration of gibberellic acid (GA3) onto kaolin samples. The amount of gibberellic acid adsorbed was determined using UV spectrophotometer. The adsorption capacity of kaolin was determined by Langm

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22

Furutani, Sheldon C., and Mike A. Nagao. "Influence of Daminozide, Gibberellic Acid, and Ethephon on Flowering, Shoot Growth, and Yield of Ginger." HortScience 21, no. 3 (1986): 428–29. http://dx.doi.org/10.21273/hortsci.21.3.428.

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Abstract Field-grown ginger (Zingiber officinale Roscoe cv. Chinese) were treated with 3 weekly foliar sprays of GA3 at 0, 1.44, and 2.88 mM; ethephon at 0, 3.46, and 6.92 mM; or daminozide at 0, 3.13, and 6.26 mM to evaluate their effects on flowering, shoot emergence, and rhizome yield. GA3 inhibited flowering and shoot emergence, while ethephon and daminozide had no effect on flowering but promoted shoot emergence. Rhizome yields were increased with daminozide and decreased with GA3 and ethephon. Chemical names used: gibberellic acid (GA3); (2-chloroethyl)phosphonic acid (ethephon); butaned

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23

Morales-Payan, Jose P., Gonzalo Morales-Salazar, and Bielinski M. Santos. "Effect of Exogenous Gibberellic Acid on Papaya Ringspot Virus (PRSV)-Infected Papaya." HortScience 32, no. 4 (1997): 603B—603. http://dx.doi.org/10.21273/hortsci.32.4.603b.

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Field and container experiments were conducted in the Dominican Republic to determine the effect of gibberellic acid 3 (GA3) rates on papaya ringspot virus (PRSV)-infected seedlings and adult plants of `Cartagena Ombligua' papaya. The apical region of PRSV-infected and PRSV-uninfected plants was sprayed with GA3 aqueous solutions at rates 0, 25, 50, 75, and 100 ppm. PRSV-uninfected adult plants and seedlings produced longer internodes as GA3 rates increased. Adult PRSV-uninfected plants flowered normally at any GA3 rate. PRSV-infected seedlings and adult plants also responded to GA3 sprays, bu

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24

Lal, Sanjeev, Aradhna Chauwan, and Vipin Chandra. "Effects of gibberellic acid on the stem and root growth patterns of Abelmoschus esculentus." International Journal of Current Research in Biosciences and Plant Biology 8, no. 12 (2021): 17–22. http://dx.doi.org/10.20546/ijcrbp.2021.812.003.

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The seeds of Abelmoschus esculentus were grown in sandy loam soil of three field plots for the treatment of GA3 hormone concentration such as control plot (A), no treatment was given to this plot. Plot (B) was treated by GA3 (10-2 M) concentration and plot (C) was treated by GA3 (10-3 M) concentration daily and compared to the control field plot. The plants of Abelmoschus esculentus, for the growth analysis were taken regularly and randomly at the 15 days interval from the seedling emergence stage till to maturity. The length of Abelmoschus esculentus stem and root growth pattern (Okra) was ob

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25

Zalewska, Małgorzata, and Małgorzata Antkowiak. "Gibberellic Acid Effect on Growth and Flowering of Ajania Pacifica /Nakai/ Bremer et Humphries." Journal of Horticultural Research 21, no. 1 (2013): 21–27. http://dx.doi.org/10.2478/johr-2013-0004.

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Abstract The research addressed the effect of gibberellic acid (GA3) on growth and flowering of Ajania pacifica /Nakai/ Bremer et Humphries ‘Bea’. The vegetative growth lasted for 8 weeks in glasshouse, under natural long day and from August 15 - under natural short day. The plants were divided into four groups: 1 - the plants sprayed with distilled water (control combination); 2, 3 and 4 - the plants sprayed with GA3 ones, twice and thrice, respectively, starting from the 5th week of growth, and then in the 6th and 7th week, successively. Each of the group was divided into two subgroups: the

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26

Opabode, Jelili T., and Simbiat Owojori. "Response of African Eggplant (Solanum macrocarpon L.) to Foliar Application of 6-Benzylaminopurine and Gibberellic Acid." Journal of Horticultural Research 26, no. 2 (2018): 37–45. http://dx.doi.org/10.2478/johr-2018-0014.

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AbstractThe influence of foliar application of benzylaminopurine (BAP) and gibberellic acid (GA3) alone and in combination on quantitative and qualitative yields of Solanum macrocarpon L. ‘Igbagba’ was investigated to increase the production of the vegetable. Treatments were arranged in randomized complete block design with three replicates. Analysis of variance showed that treatments had significant (p < 0.05) influence on all parameters measured. Foliar application of 20–40 mg·dm−3 of GA3 alone doubled the shoot heights compared with other treatments. The highest leaf area, fresh shoot we

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27

Wickremesinhe, E. R. M., W. J. Blackmon, and B. D. Reynolds. "In Vitro Propagation of Apios americana." HortScience 25, no. 11 (1990): 1439–40. http://dx.doi.org/10.21273/hortsci.25.11.1439.

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Shoot proliferation from axillary buds of Apios americana Medikus (apios, groundnut) was obtained on a modified Murashige and Skoog (MS) medium supplemented with 2.22 μm BAP, 0.5 μm IBA, and 3.0 μm GA3. Existed shoots rooted on MS basal medium. About 60% of the rooted plants were successfully established in soil. Chemical names used: 1 H-indole-3-butanoic acid (IBA). gibberellic acid (GA3), N6-benzylaminopurine (BAP).

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28

Ahmad, Ashfaq, Haider Ali, Habiba Khan, et al. "Effect of Gibberellic Acid on Production of Biomass, Polyphenolics and Steviol Glycosides in Adventitious Root Cultures of Stevia rebaudiana (Bert.)." Plants 9, no. 4 (2020): 420. http://dx.doi.org/10.3390/plants9040420.

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In current study, the effect of gibberellic acid was tested for production of biomass, polyphenolics and Steviol glycosides in adventitious root cultures of Stevia rebaudiana. Adventitious cultures were induced from the roots of in vitro grown plantlets on Murashige and Skoog (MS) medium containing combination of gibberellic acid (GA3; 0.5, 1.0, 1.5 and 2.0 mg/L) and naphthalene acetic acid (NAA; 0.5 mg/L). Initially, a known mass of inoculum roots were shifted into suspension media augmented with various GA3 concentrations. The growth behavior of adventitious roots was recorded every 3 days f

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29

Hanley, Kathleen M., and Duane W. Greene. "Gibberellin-like Compounds from Two Ectomycorrhizal Fungi and the GA3 Response on Scotch Pine Seedlings." HortScience 22, no. 4 (1987): 591–94. http://dx.doi.org/10.21273/hortsci.22.4.591.

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Abstract The ectomycorrhizal fungi Pisolithus tinctorius (Pers.) Coker & Couch and Thelephora terestris (Ehrh) Fr. form symbiotic relationships with pine seedling roots. Significant quantities of gibberellin-like compounds were detected in the filtrates of both P. tinctorius and T. terestris using the lettuce hypocotyl bioassay. To evaluate gibberellin effects on the host physiology, pine (Pinus sylvestris L.) seedlings were treated biweekly with 0 to 100 mg·liter-1 gibberellic acid for 3 months. Treatment did not influence fresh weight, dry weight, or sugar content in either roots or shoo

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30

Nagao, Mike A., and Sheldon C. Furutani. "Improving Germination of Papaya Seed by Density Separation, Potassium Nitrate, and Gibberellic Acid." HortScience 21, no. 6 (1986): 1439–40. http://dx.doi.org/10.21273/hortsci.21.6.1439.

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Abstract Poor germination in Carica papaya L. was partly due to the absence of embryos in about 20% of the seeds. Final germination and the rate of seedling emergence were improved by seed separation with 1.097 g·em−3 sucrose solution and soaking with 1.0 M potassium nitrate (KNO3) or 600 ppm gibberellic acid (GA3). Final germination was 87.8% for the KNO3 treatment and 80.5% for GA3. Seedlings from KNO3 treatments were normal, whereas GA3 caused excessive elongation of stems.

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Khalil, Hoda A. "Improved Yield, Fruit Quality, and Shelf Life in ‘Flame Seedless’ Grapevine with Pre-Harvest Foliar Applications of Forchlorfenuron, Gibberellic Acid, and Abscisic Acid." Journal of Horticultural Research 28, no. 1 (2020): 77–86. http://dx.doi.org/10.2478/johr-2020-0005.

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AbstractThe effect of gibberellic acid (GA3), forchlorfenuron (CPPU), and abscisic acid (ABA) on the parameters of yield of ‘Flame Seedless’ grapes was investigated. The clusters of 8-year-old grapevines were sprayed with solutions: GA3 at 25 mg·dm−3, CPPU at 10 mg·dm−3, and ABA at 300 mg·dm−3, alone or in combinations. GA3 and CPPU treatment increased yield, cluster weight and length, berry weight and diameter, as well as fruit firmness, but reduced the total soluble solids (TSS) and intensity of berry color. Anthocyanin content of berries treated with GA3 and CPPU increased significantly by

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AL-Juboory, Hurriah H. "EFFECT OF ETHEPHON AND GA3 ON SEX EXPRESSION OF GYNOECIOUS CUCUMBERS (CUCUMIS SATIVUS L.)." HortScience 26, no. 6 (1991): 681A—681. http://dx.doi.org/10.21273/hortsci.26.6.681a.

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Gibberellic acid (GA3) promoted maleness and 2-Chloroethyl phosphonic acid (ethephon) promoted femaleness in cucumber (Cucumis sativus L.) cv Regal 446 seedlings when treated with water, ethephon (250 or 350 ppm) or GA3 (1000 or 2000 ppm) at the l-, 2-, or 3-leaf stage. Seedlings treated with ethephon at all stages produced more female flowers than those with water or GA3 treatments. GA3-treated seedlings produced significantly more male flowers than water treatments, at all developmental stages. The differential response of cucumber seedlings treated at different stages indicated the importan

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Annis, David C., Paul T. Gibson, and Terri Woods Starman. "Photoperiod and Gibberellic Acid Modify Growth and Flowering of Craspedia Globosa." HortScience 27, no. 10 (1992): 1082–84. http://dx.doi.org/10.21273/hortsci.27.10.1082.

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The objective of this study was to investigate the influence of photoperiod and 0, 1, 5, or 10 applications at weekly intervals of GA3 foliar sprays at 500 mg·liter–1 on growth and flowering of Craspedia globosa `Drumstick' Benth. Long days (LD) hastened flowering and increased the number of flowers per plant. Short days (SD) increased foliage height and foliage fresh and dry weights. Foliage and total plant heights increased and days to bud and secondary inflorescence width decreased linearly as GA3 application frequency increased. Chemical name used: (1α,2β,4aα,4bβ,10β)-2,4a,7-trihydroxy-1-m

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Maraaini, Ajeng, R. A. Diana Widyatuti, Hayane Adeline Warganegara, and Agus Karyanto. "Pengaruh Metode Aplikasi dan Konsentrasi Gibberellic Acid (GA3) terhadap Fase Pertumbuhan Vegetatif Tanaman Nanas (Ananas comosus [L.] Merr.)." JURNAL AGROTROPIKA 23, no. 1 (2024): 177. http://dx.doi.org/10.23960/ja.v23i1.7698.

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Increasing the production of pineapple fruit can be done by manipulating the plant using Gibberellic Acid Growth Regulatory Substance (ZPT). The purpose of this study was to determine the effect of GA3 concentration and application method, as well as its interaction in increasing the vegetative growth of pineapple plants. Data collection was carried out in November 2022- February 2023 at a pineapple plantation company in Central Lampung. Treatments were arranged factorial (3x2) using a randomized block design with 3 replications. The first factor was Gibberellin (A) which consisted of three le

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Rayee, Ramin, La Hoang Anh, and Tran Dang Xuan. "Induction of UV-B Stress Tolerance by Momilactones and Gibberellic Acid in Rice." Crops 5, no. 1 (2025): 6. https://doi.org/10.3390/crops5010006.

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This study aims to investigate the effects of momilactone-rich bran fractions (MRBF) and gibberellic acid (GA3) on the physiological responses, biochemical composition, and antioxidant activity in rice (Oryza sativa L.) under UV-B stress. Rice seedlings were treated with MRBF (3 mg mL−1), or GA3 (50 and 100 µM) by foliar spraying, then exposed to UV-B-induced stress for 0, 1.5, and 3 h. Phenolic acids and endogenous momilactones A (MB) and B (MB) were analyzed using high-performance liquid chromatography (HPLC) and ultra-performance liquid chromatography–electrospray ionization–mass spectromet

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Lee, Ko-Eun, Arjun Adhikari, Sang-Mo Kang, et al. "Isolation and Characterization of the High Silicate and Phosphate Solubilizing Novel Strain Enterobacter ludwigii GAK2 that Promotes Growth in Rice Plants." Agronomy 9, no. 3 (2019): 144. http://dx.doi.org/10.3390/agronomy9030144.

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Silicon (Si) and phosphorus (P) are beneficial nutrient elements for plant growth. These elements are widely used in chemical fertilizers despite their abundance in the earth’s crust. Excessive use of chemical fertilizers is a threat to sustainable agriculture. Here, we screened different Si and P solubilizing bacterial strains from the diverse rice fields of Daegu, Korea. The strain with high Si and P solubilizing ability was selected and identified as Enterobacter ludwigii GAK2 through 16S rRNA gene sequence analysis. The isolate GAK2 produced organic acids (citric acid, acetic acid, and lac

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Markovic, Sean J., and James E. Klett. "Plant Growth Regulator Impacts on Vegetative Cutting Production of Moroccan Pincushion (Pterocephalus depressus) Plants." Journal of Environmental Horticulture 39, no. 2 (2021): 62–67. http://dx.doi.org/10.24266/0738-2898-39.2.62.

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Abstract Moroccan pincushion (Pterocephalus depressus) is a drought-tolerant perennial that is being used in landscapes throughout arid areas of the western United States. This paper describes two experiments researching vegetative cutting production from stock plants. Moroccan pincushion stock plants received foliar applications of gibberellic acid (GA3), benzyladenine, ethephon, or auxin [indole-3-butyric acid (IBA)] plant growth regulators (PGR). Plant growth regulators were applied singularly and in combination with GA3 to determine efficacy on stock plant growth. A propagation study was c

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Hussain, Khalid, Fatima Asghar Diyyal, Khalid Nawaz, Noshia Arshad, Uswa Ali, and Mohammad Qurban. "Promoting growth and morpho-physiological attributes in linseed (Linum usitatissimum L.) using indole acetic acid and gibberellic acid applied individually or jointly as foliar spray." International Journal of Applied and Experimental Biology 2, no. 1 (2022): 69–78. http://dx.doi.org/10.56612/ijaeb.v2i1.25.

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Gibberellic acid (GA3) and indole-3-acetic acid (IAA) are commercially and scientifically important due to their promising impacts on growth, quantity and quality of most crops. The current work intended to observe the effect of foliar applications of plant growth regulators (IAA and GA3) on linseed morpho-biochemical attributes and key antioxidants. Indole-3-acetic acid showed more beneficial effects on growth and antioxidant activities than those by GA3. Root length, shoot length, photosynthetic rate, root fresh weight, and N were respectively 38%, 25%, 38%, 60%, and 1.26% higher with combin

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Neily, Will G., Peter R. Hicklenton, and David N. Kristie. "High-resolution Analysis of the Effect of DIF and Growth Regulators on Stem Elongation in Zinnia." HortScience 30, no. 4 (1995): 866F—866. http://dx.doi.org/10.21273/hortsci.30.4.866f.

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Instantaneous stem elongation rates (SER) in zinnia (Zinnia elegans cv. Pompon) treated with daminozide (B-Nine) or gibberellic acid (GA3) were recorded in 3 DIF regimes (+5, –5, 0; daily average 18.7C). Two developmental stages were chosen for study: Stage 1 was vegetative growth before flower bud formation Stage 2 was the period before anthesis. At both stages, patterns of SER and total diurnal growth were influenced by DIF regime. The application of GA3 increased SER in a more or less additive manner over all phases of the diurnal growth cycle and daminozide similarly reduced SER. Neither G

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Corr, Brian E., and Richard E. Widmer. "Gibberellic Acid Increases Flower Number in Zantedeschia elliottiana and Z. rehmannii." HortScience 22, no. 4 (1987): 605–7. http://dx.doi.org/10.21273/hortsci.22.4.605.

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Abstract Gibberellic acid (GA3) was applied to Zantedeschia elliottiana (W. Wats.) and Z. rehmannii (Engl.) (yellow and pink calla lily) at 0, 50, 100, 500, or 1000 ppm, either as a preplant rhizome 10-min soak or as a foliar spray. Soaking rhizomes in 500 ppm GA3 prior to planting increased number of flowering shoots and flowers per shoot. Leaves on treated plants were narrower, but length was unaffected. Flower height was not affected. Foliar sprays did not alter any measured parameter. A preplant GA soak may be useful in the production of Zantedeschia as flowering potted plants. Chemical na

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Stalker, H. T., M. H. Seitz, and P. Reece. "Effect of Gibberellic Acid on Pegging and Seed Set of Arachis Species1." Peanut Science 14, no. 1 (1987): 21–25. http://dx.doi.org/10.3146/i0095-3679-14-1-6.

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Abstract Many species of Arachis fail to produce seeds after self- or cross-pollination. A primary barrier to seed production is pegging for many genotypes; therefore, the effect of applying GA3 (gibberellic acid) to flowers was investigated. Species of Arachis were treated with 0, 88, 176, or 352 ppm GA3 daily for 30 days and the number of flowers and pegs recorded. The species A. chacoense Krap. et Greg. nom. nud., A. villosa Benth., A. correntina (Burk) Krap. et Greg. nom. nud., A diogoi Hoehne, A. stenosperma Greg. et Greg. nom. nud., and A. sp. coll. GK 30006 had a linear response in peg

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Janowska, Beata, Roman Andrzejak, Lidia Szwajkowska-Michałek, and Kinga Stuper-Szablewska. "The Content of Biologically Active Substances in Crocosmia × crocosmiiflora ‘Lucifer’ Tubers after Treatment with GA3." Agronomy 11, no. 3 (2021): 553. http://dx.doi.org/10.3390/agronomy11030553.

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This study was conducted to assess the influence of gibberellic acid (GA3) on the content of biologically active substances in Crocosmia × crocosmiiflora ‘Lucifer’ tubers. These tubers are a promising source of potential antioxidants, and their extracts can be used in pharmaceutical industry, as well as in cosmetics products and antifungal and antibacterial substances. Four groups of biologically active substances were determined from tubers: saponins, phenolic acid, flavonoids and carotenoids. The antioxidant activity of the extracts from tubers increased proportionally to the GA3 concentrati

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Pethybridge, Sarah J., Sean P. Murphy, and Julie R. Kikkert. "Growth Manipulation of Slicer Carrots by Foliar-applied Gibberellic Acid in New York." HortTechnology 33, no. 4 (2023): 325–32. http://dx.doi.org/10.21273/horttech05231-23.

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New York, USA, is a regional hub for processing carrot (Daucus carota ssp. sativus) production and Nantes-type cultivars are preferred for slicing. Diameter is critical in carrots for slicing, with roots larger than 1 5/8 inch being rejected. The potential to manipulate carrot root diameter and hence suitability for slicing by foliar-applied gibberellic acid (GA3) was tested in four small plot replicated field trials over 3 years (2020, 2021, and 2022). In the most efficacious treatments, GA3 resulted in a 23.1% to 135.4% increase in foliar biomass at the expense of root weight and diameter. I

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Davies, Frederick S., Craig A. Campbell, and Matthew W. Fidelibus. "Gibberellic Acid Tank Mix and Adjuvant Effects on Peel Quality and Juice Yield of `Hamlin' Oranges." HortTechnology 11, no. 2 (2001): 171–74. http://dx.doi.org/10.21273/horttech.11.2.171.

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It is desirable to mix gibberellic acid (GA3) with other commonly applied materials to reduce application cost. However, applying GA3 with some compounds can reduce its efficacy or cause phytotoxicity. We conducted experiments in 1997-98 and 1998-99 to determine if GA3 (ProGibb) can be tank-mixed with fosetyl-Al (Aliette), or avermectin (Agri-Mek) and oil, without reducing GA3 efficacy. In addition, we compared Silwet and Kinetic adjuvants for enhancement of GA3 efficacy. Five tank mixes were tested along with a nonsprayed control. These included 1) GA3; 2) GA3 and Silwet; 3) GA3 and Kinetic;

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Maurya, Ragini, and Anil K. Singh. "Response of Gibberellic Acid and Corm Division on Floral Attributes of Gladiolus." International Journal of Plant & Soil Science 35, no. 19 (2023): 908–14. http://dx.doi.org/10.9734/ijpss/2023/v35i193624.

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This study was conducted to assess the response of Gibberellic acid and corm division on floral attributes of gladiolus cv. Punjab Dawn at Horticulture Research Farm of Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India during two consecutive year (2017-2019). The treatments comprised of growth regulators with two concentration i.e. GA3 100 ppm and 200 ppm including control (distilled water) and corms which are cut having 1bud, 2 buds and 3 buds and whole corm having 4 buds, 5 buds and 6 buds. The experiment was laid out in Randomized Block Design and three replicati

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Corr, Brian E., and Richard E. Widmer. "Paclobutrazol, Gibberellic Acid, and Rhizome Size Affect Growth and Flowering of Zantedeschia." HortScience 26, no. 2 (1991): 133–35. http://dx.doi.org/10.21273/hortsci.26.2.133.

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Growth and flowering of Zantedeschia elliottiana W. Wats. and Z. rehmannii Engl. were studied. Rhizomes of both species were produced either in a glasshouse or outdoors in California. Plants grown from glasshouse-produced rhizomes flowered within 90 days only when a preplant rhizome soak of 500 ppm GA, was applied. Control plants of both species flowered when grown from field-produced rhizomes, but a GA3 preplant rhizome soak significantly increased the number of flowers (spathe and spadix) produced. Paclobutrazol, applied as a preplant rhizome soak or as a soil drench when shoots were 2 to 3

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Fidelibus, Matthew W., and Frederick S. Davies. "271 Gibberellic Acid Effects on `Hamlin' Orange Peel Quality are Reduced by Wash-off Sprays." HortScience 35, no. 3 (2000): 438A—438. http://dx.doi.org/10.21273/hortsci.35.3.438a.

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In Florida, gibberellic acid (GA3) is applied to citrus in the late summer or early fall to reduce senescence-related peel disorders of fresh fruit and to increase juice yield of processing oranges. Heavy rainfall may occur daily during this time that could reduce the efficacy of GA3 sprays. Experiments were conducted in 1998-99 and 1999-2000 to test the effect of timed “wash off” treatments on the peel color and peel puncture resistance (PPR) of `Hamlin' orange (Citrus sinensis [L.] Osb.) fruit that were previously treated with GA3. In Oct. 1998 and 1999, the canopy of 14- or 15-year-old tree

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Arrebola, M. L., O. Socorro, A. Barceló-Muñoz, E. Simón-Pérez, and Fernando Pliego-Alfaro. "Micropropagation of Satureja obovata Lag." HortScience 32, no. 7 (1997): 1278–80. http://dx.doi.org/10.21273/hortsci.32.7.1278.

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A micropropagation procedure for juvenile and adult savory (Satureja obovata Lag.) explants is described. Pretreatment of the nutlets with gibberellic acid (0.57 mm) did not improve in vitro germination. Optimum shoot proliferation of juvenile and adult material was obtained on medium containing 2.22 μm N6-benzyladenine. Rooting and acclimatization of juvenile shoots were accomplished in vivo, while adult shoots were rooted in vitro after 3 days of exposure to 4.92 μm indole-3-butyric acid followed by subsequent transfer to auxin-free medium. More than 95% survival of adult rooted plants was o

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Silva – Agurto, Catherine, Michel Leiva Mora, Tatiana Macarena Acosta, and Nayeli Estefania Sánchez Ortiz. "Influencia del ácido giberélico (AG3), etanol y cianamida hidrogenada (Dormex) sobre la brotación de yemas a partir de tubérculos de Solanum tuberosum L. var. Cecilia." Bionatura 8, no. 3 (2023): 1–9. http://dx.doi.org/10.21931/rb/2023.08.03.19.

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Induction of sprouting is widely used in Solanum tuberosum tubers to reduce the sprout growth time. The main objective of this article was to evaluate the effect of different concentrations of gibberellic acid (GA3), ethanol, and hydrogen cyanamide (Dormex) on the budding of buds, length, and number of sprouts in Solanum tuberosum L. var. Cecilia tubers. Previously disinfected tubers were immersed in three sprouting inducers at different concentrations and placed in two peat-based substrates (TS1 and TS2). The tubers were submerged for 72 hours for gibberellic acid, while hydrogen cyanamide (D

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Lardizabal, Ricard D., and Paul G. Thompson. "Growth Regulators Combined with Grafting Increase Flower Number and Seed Production in Sweet Potato." HortScience 25, no. 1 (1990): 79–81. http://dx.doi.org/10.21273/hortsci.25.1.79.

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Four sweet potato [Ipomoea batatas (L.) Lam.] cultivars responded differently to growth regulator application for number of flowers produced, percentage capsule set, and number of seeds produced. Gibberellic acid, 2,4-D, and BA application resulted in the highest number of flowers by `Jewel', `Shore Gold', and `Vardaman) plants, respectively. Application of GA3 to `Jewel', 2,4-D or ethephon to `Shore Gold', and BA to `Vardaman' produced the highest number of seeds. Grafting to rootstock of Z. carnea Jacq. spp. fistulosa (Mart. ex Choisy) D. Austin increased flower numbers, percentage capsule s

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