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Journal articles on the topic 'Plants, Effect of gibberellins on'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 January 2023

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1

Wang, Bing, and Alan R. Langille. "Response of a Gibberellin-deficient Potato Mutant to Induction and Growth Regulators as a Working Model for Tuber Initiation." HortScience 42, no. 3 (June 2007): 540–43. http://dx.doi.org/10.21273/hortsci.42.3.540.

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To explore further the role endogenous gibberellins play in the formation of the potato tuber, a gibberellin-deficient dwarf of Solanum tuberosum subsp. andigena (PI 281036) and its normal sibling were used in this study. Because gibberellins are known to be elevated and to affect tuber formation negatively when potato plants are grown under long day conditions, test plants were first grown in a growth chamber under conditions that did not favor tuberization (noninducing conditions). The stem apices of dwarfs received weekly applications of a 100-ppm gibberellic acid (GA3) solution to achieve

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2

Mignolli, Francesco, Graciela Beatriz Rojas, and María Laura Vidoz. "Supraoptimal ethylene acts antagonistically with exogenous gibberellins during Solanum lycopersicum (Solanaceae) hypocotyl growth." Boletín de la Sociedad Argentina de Botánica 51, no. 2 (June 15, 2016): 235–42. http://dx.doi.org/10.31055/1851.2372.v51.n2.14836.

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In many plant species, ethylene and gibberellins interact to regulate plant growth and development. In some cases, these hormones can act in a synergistic way whereas in others they can be antagonistic. To date, the control of hypocotyl elongation by ethylene and gibberellins has been poorly explored in tomato. In this paper, we report that, application of exogenous ethylene to tomato seedlings or high endogenous ethylene production, as in the epinastic mutant, strongly prevent the effect of gibberellic acid (GA3) application. Moreover, constitutive activation of gibberellin signal in a DELLA

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3

Wiseman, Nadine J., and Colin G. N. Turnbull. "Effects of photoperiod and paclobutrazol on growth dynamics of petioles in strawberry (Fragaria × ananassa)." Functional Plant Biology 26, no. 4 (1999): 353. http://dx.doi.org/10.1071/pp98001.

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Petiole elongation of strawberry plants (Fragaria × ananassa) is modified by photoperiod, and gibberellins may mediate this response. To test the relationship further, we measured petiole growth dynamics under short and long days, in comparison with responses to paclobutrazol, which reduces gibberellin biosynthesis. Growth rate in short days was lower after 2 days, and at its maximum was 60% of long-day controls. Petiole length at maturity was 75%, and was accounted for primarily by decreased cell length. Subsequent leaves showed similar patterns, but in the third leaf, cell number was also re

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4

Han, Jennifer, Jan E. Murray, Qingyi Yu, Paul H. Moore, and Ray Ming. "The Effects of Gibberellic Acid on Sex Expression and Secondary Sexual Characteristics in Papaya." HortScience 49, no. 3 (March 2014): 378–83. http://dx.doi.org/10.21273/hortsci.49.3.378.

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The vegetative forms of male (XY), female (XX), and hermaphrodite (XYh) papaya (Carica papaya L.) plants are phenotypically identical. However, the flower and inflorescence morphology of each sex type is unique. Gynodioecious varieties SunUp, SunUp Diminutive mutant, and dioecious AU9 were used to test the response of papaya to gibberellic acid (GA3). Exogenous applications of GA3 on female and hermaphrodite flowers of papaya did not yield any sex reversal phenotype but caused a significant increase in peduncle elongation and inflorescence branch number in all treated plants. An increase in fl

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5

Sabovljevic, Aneta, Marko Sabovljevic, and D. Grubisic. "Gibberellin influence on the morphogenesis of the moss Bryum argenteum Hedw. in in vitro conditions." Archives of Biological Sciences 62, no. 2 (2010): 373–80. http://dx.doi.org/10.2298/abs1002373s.

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The moss Bryum argenteum Hedw. was treated with gibberellins as well as some inhibitors of gibberellin biosynthesis in order to investigate their influence on B. argenteum morphogenesis. Generally, gibberellins have not been chemically identified in bryophytes, while other groups of classical phytohormones (auxins, cytokinins, abscisic acid and ethylene) have been chemically identified in these plants. The in vitro culture of the moss Bryum argenteum was established from sterilized spores. The apical shoots of untreated gametophytes grown in vitro were used to investigate the influence of diff

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6

Jaques, Lanes B. A., Ivan R. Carvalho, Vinícius J. Szareski, João R. Pimentel, Cristian Troyjack, Simone M. Dellagostin, Mayara T. Mendonça, et al. "Gibberellic Acid Utilization in Seeds and Plants of Beans: Effect on Growth and Seeds Physiological Quality." Journal of Agricultural Science 11, no. 2 (January 15, 2019): 541. http://dx.doi.org/10.5539/jas.v11n2p541.

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The growth regulators from gibberellins, when applied on plants, might improve physic and physiological features, stimulate cell division and elongation, this study aimed at evaluating the influence of gibberellic acid doses applied exogenously on bean crop through seed treatment, and analyzing its effects on morphological attributes of seedlings and physiological quality of the seeds produced. The experimental design was completely randomized design, with treatments corresponding to the doses: zero (distilled water only), 50, 100 and 200 mg L-1, arranged in four replicates. The use of gibbere

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7

Zhang, L., S. Rajapakse, R. E. Ballard, and N. C. Rajapakse. "Light Quality Regulation of Gene Expression in Chrysanthemum." HortScience 33, no. 3 (June 1998): 446c—446. http://dx.doi.org/10.21273/hortsci.33.3.446c.

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A major part of Clemson light quality research program focuses on understanding the mechanisms of plant growth alteration under spectral filters. We have extended this research to understand the molecular basis for plant height control by spectral filters. From the whole plant research we have found that gibberellins (GA) play a key role in height control under spectral filters. However, it is not clear whether an alteration of endogenous gibberellin levels or a change in sensitivity to gibberellins is causing the observed effects. Since gibberellins are a key hormone in cell expansion and flo

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8

Miceli, Alessandro, Alessandra Moncada, Leo Sabatino, and Filippo Vetrano. "Effect of Gibberellic Acid on Growth, Yield, and Quality of Leaf Lettuce and Rocket Grown in a Floating System." Agronomy 9, no. 7 (July 16, 2019): 382. http://dx.doi.org/10.3390/agronomy9070382.

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Gibberellins (GAs) are growth hormones strongly involved in a wide variety of physiological activities. Currently, gibberellins are commercially used to enhance phenotypic characteristics, earliness, and productivity of many vegetable and ornamental crops. In this work, the efficacy of supplementation of low levels of gibberellic acid (0, 10−8, 10−6, and 10−4 M GA3) through the mineral nutrient solution of a floating system on yield and quality of leaf lettuce and rocket plants was tested. The marketability of plants was lost when 10−4 M GA3 was added to the mineral nutrient solution. This stu

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9

Harkess, Richard L., and Robert E. Lyons. "Gibberellin- and Cytokinin-induced Growth and Flowering Responses in Rudbeckia hirta L." HortScience 29, no. 3 (March 1994): 141–42. http://dx.doi.org/10.21273/hortsci.29.3.141.

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BA and GA4+7, were applied to vegetative, mature Rudbeckia hirta plants at the beginning of long days (LD). There were no synergistic effects, but BA inconsistently affected branching and had no effect on flowering. Floral initiation of the terminal inflorescence was promoted by GA4+7, although axillary inflorescences were not. Increasing GA4+7 levels decreased the time to terminal inflorescence anthesis. However, the interval between the terminal and second axillary inflorescence anthesis was increased. The net result was no significant effect on the time to second axillary inflorescence anth

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10

da Silva, Gustavo Cabral, Ivan de-la-Cruz-Chacón, Ana Beatriz Marques Honório, Bruna Cavinatti Martin, Marília Caixeta Sousa, Felipe Girotto Campos, Carmen Sílvia Fernandes Boaro, and Gisela Ferreira. "Temperature and GA3 as Modulating Factors in the Biosynthesis of Alkaloids during Imbibition and Early Development of Annona x atemoya Mabb. cv. ‘Gefner’ Seedlings." Horticulturae 8, no. 9 (August 26, 2022): 766. http://dx.doi.org/10.3390/horticulturae8090766.

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Alkaloids are products of the specialized metabolism of plants and temperature is a factor capable of modulating their biosynthesis. Species of the Annonaceae family biosynthesize alkaloids and present dormancy in their seeds, which can be overcome with the use of gibberellins. Therefore, the aim of this work was to evaluate whether temperature variations and the use of gibberellin in seeds affect the production of alkaloids during germination and early development of Annona x atemoya Mabb. cv. ‘Gefner’ seedlings. Results showed that the temperature of 30 °C associated with imbibition in water

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11

Farida, Farida, and Nani Rohaeni. "PENGARUH KONSENTRASI HORMON GIBERELIN TERHADAP PERTUMBUHAN DAN HASIL TANAMAN OKRA." ZIRAA'AH MAJALAH ILMIAH PERTANIAN 44, no. 1 (February 12, 2019): 1. http://dx.doi.org/10.31602/zmip.v44i1.1601.

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The effect of gibberellins hormone concentration on the growth and yield of okra. The aims of research are (1) to determinate the effects of growth and yield of okra plant with gibberellins hormon treatment, (2) to determine the best concentration of gibberellns hormone on the growth and yield of okra plants. This research obtained for three mounth on January to Aprl 2018. The research was conducted in Diponegoro Street, Village Sangatta Sub-distrct East Kutai. This research uses is Completely Randomized Design (CRD) of non factorial experiments each of four treatments and six replcates, are :

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12

Kurnia Sari, Fransisca Mareta, Maria Marina Herawati, Endang Pudjihartati, and Martinus Andree Wijaya Setiawan. "THE EFFECT OF CONCENTRATION AND FREQUENCY OF GIBERELLINS ON THE GROWTH OF ARTEMISIA ANNUA Linn." Agric 34, no. 1 (August 18, 2022): 15–22. http://dx.doi.org/10.24246/agric.2022.v34.i1.p15-22.

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Artemisia is one of the plants that can be used as an alternative medicine for malaria. The Artemisia plant contains secondary metabolites in the form of artemisinin compounds that function as antimalarials. One of the efforts that can be done to increase the growth of Artemisia annua. plants is by using a growth regulator of gibberellins (GA3). Using a Randomized Block Factorial Designs (RBFD) with the first factor being the concentration of 50 mg.L-1 (K1), mg.L-1(K2), 150 mg.L-1 (K3), 200 mg.L-1 (K4). The second factor has 3 frequencies, 1 time giving 7HSPT (F1), 2 times giving 7HSPT and 14H

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13

Nowak, Tomasz J. "Effect of gibberellin, auxin and kinetin treatments combined with foliar applied NPK on the yield of Capsicum annuum L. fruits and their capsaicin content." Acta Agrobotanica 33, no. 1 (2013): 81–92. http://dx.doi.org/10.5586/aa.1980.007.

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The Wrocław version of hydroponic culture was applied. Under optimal conditions of root fertilization the plants were sprayed with growth regulators sueh as gibberellins, auxins and kinetins, and .their mixtures. Each growth regulator treatment was applied with or without NPK added. The influence of these treatments on the fresh and dry weight of the fruit, percentage of ripe fruits and content and yield of capsaicin was studied. The highest yield of fruits and capsaicin. was obtained from plants sprayed with gibberellic acid and kinetin (in concentrations of 10 and 5 mg/l, respectively) toget

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14

Strack, Z., R. Karwowska, and E. Kraszewska. "The effect of several stress conditions and growth regulators on photosynthesis and translocation of assimilates in the bean plant." Acta Societatis Botanicorum Poloniae 44, no. 4 (2015): 567–88. http://dx.doi.org/10.5586/asbp.1975.052.

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Studies were performed on young bean plants, grown in water culture. The effect of salt stress, X-flays and flooding on growth, photosynthesis and translocation of assimilates was investigated. Salt stress (NaCl and Na<sub>2</sub>SO<sub>4</sub>), especially at - 4.5 atm. of water potential, depressed all the mentioned processes, but most dramatically - photosynthesis. Export of photosynthetes from the blades decreased. Salt stress not only reduced the rate of translocation, but also influenced the pattern of <sup>14</sup>C-distoibution, especially inhibited

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15

Evans, Michael R., Harold F. Wilkins, and Wesley P. Hackett. "Gibberellins and Temperature Influence Long-day Floral Initiation in Poinsettia." Journal of the American Society for Horticultural Science 117, no. 6 (November 1992): 966–71. http://dx.doi.org/10.21273/jashs.117.6.966.

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Exogenous foliar spray applications of gibberellic acid (GA3) applied at 7- or 14-day intervals providing 50 or 125 μg per plant inhibited long-day (LD) floral initiation in poinsettia [Euphorbia pulcherrima (Willd. ex. Klotzsch)]. Periodic application of GA3 resulted in an additional number of nodes being produced by the plant before floral initiation equivalent to the number of nodes over which GA3 was applied. Further, GA, application eliminated the nodal position dependence of the long-day node number (LDNN) of axillary meristems observed in control plants. It was concluded that GA3 applic

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16

Shan, Fuxin, Rui Zhang, Jin Zhang, Chang Wang, Xiaochen Lyu, Tianyu Xin, Chao Yan, Shoukun Dong, Chunmei Ma, and Zhenping Gong. "Study on the Regulatory Effects of GA3 on Soybean Internode Elongation." Plants 10, no. 8 (August 23, 2021): 1737. http://dx.doi.org/10.3390/plants10081737.

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Excessive plant height is an important factor that can lead to lodging, which is closely related to soybean yield. Gibberellins are widely used as plant growth regulators in agricultural production. Gibberellic acid (GA3), one of the most effective active gibberellins, has been used to regulate plant height and increase yields. The mechanism through which GA3 regulates internode elongation has been extensively investigated. In 2019 and 2020, we applied GA3 to the stems, leaves, and roots of two soybean cultivars, Heinong 48 (a high-stalk cultivar) and Henong 60 (a dwarf cultivar), and GA3 was

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17

Gosai, Sanjeevan, Subash Adhikari, Saugat Khanal, and Padam Bahadur Poudel. "Effects of plant growth regulators on growth, flowering, fruiting and fruit yield of cucumber (Cucumis sativus L.): A review." Archives of Agriculture and Environmental Science 5, no. 3 (September 25, 2020): 268–74. http://dx.doi.org/10.26832/24566632.2020.050306.

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This review provides a comprehensive overview of the basic and applied aspects of different plant growth regulators in the regulation of growth and development of cucumber plants. The study is completely based on the use of secondary sources of data; related journals, government institutes, and relevant reports. Foliar application of PGRs has been shown to change the physiological and developmental processes, including plant vegetative growth, sex expression, yield, and yield components in cucumber. There are basically two types of growth regulators; plant growth promoters such as auxin, gibbe

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18

Jazuli, MI, SN Aini, and NS Khodijah. "PEMANFAATAN GIBERELIN UNTUK MEMACU PERTUMBUHAN DAN PRODUKSI MELON MENGGUNAKAN HIDROPONIK SISTEM SUMBU." Jurnal Bioindustri 4, no. 1 (November 30, 2021): 1–11. http://dx.doi.org/10.31326/jbio.v4i1.1220.

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Melon production has decrease due to decreasing agriculture land area. An effort to increases melon production can be done by cultivating melons using a hydroponic system. Gibberellins can be used to increase melon production in Bangka Belitung. This research aims to determine the effect and gibberellin doses that has increase melon growth and production which cultivated using hydroponic wick system. This research was conducted from January to April 2020 at the Research and Experimental Station, Faculty of Agriculture, Fisheries and Biology, Universitas Bangka Belitung. The experimental design

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Gökbayrak, Zeliha, Hakan Engin, Arda Akçal, and Hatice Kiraz. "Pollen of Arbutus unedo: Effects of plant growth regulators." Botanica Serbica 44, no. 1 (2020): 55–59. http://dx.doi.org/10.2298/botserb2001055g.

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Arbutus unedo is a species mainly used for landscaping purposes and lately for honey production. Its antioxidant characteristics have also been a subject of of research interest. The germination of pollen grains freshly collected from flowers was tested in vitro, and 30% sucrose gave the highest pollen germination. Subsequently, three growth regulators belonging to the categories of gibberellins and brassinosteroids [24-epibrassinolide (Ebl) and 22S,23S-homobrassinolide (Hbl)] were added to the growth medium singly or in double combinations (gibberellin + brassinosteroid), and the petri dishes

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20

Basnizki, Jehuda, and Eliezer E. Goldschmidt. "FURTHER EXAMINATION OF GIBBERELLIN A, EFFECTS ON FLOWERING OF GLOBE ARTICHOKES (CYNARA SCOLYMUS L.) UNDER CONTROLLED ENVIRONMENT AND FIELD CONDITIONS." Israel Journal of Plant Sciences 42, no. 2 (May 13, 1994): 159–66. http://dx.doi.org/10.1080/07929978.1994.10676567.

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The effect of gibberellin A3 (GA3) treatments on flowering of seed-grown globe artichoke (Cynara scolymus) was investigated under controlled environment and field conditions. GA3 induced flower initiation in lines ‘060’ and ‘Talpiot’ under strictly noninductive, short-day-high-temperature conditions. In ‘Talpiot’, GA3 induced microscopically detectable flower initiation but no stem elongation, suggesting involvement of gibberellins in the flower formation process. Under field conditions, GA3 replaced the cold requirements of line ‘HU 271’, thereby enabling the start of flowering during autumn.

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21

Kosakivska, I. V. "GIBBERELLINS IN REGULATION OF PLANT GROWTH AND DEVELOPMENT UNDER ABIOTIC STRESSES." Biotechnologia Acta 14, no. 2 (February 2021): 5–18. http://dx.doi.org/10.15407/biotech14.02.005.

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Background. Gibberellins (GAs), a class of diterpenoid phytohormones, play an important role in regulation of plant growth and development. Among more than 130 different gibberellin molecules, only a few are bioactive. GA1, GA3, GA4, and GA7 regulate plant growth through promotion the degradation of the DELLA proteins, a family of nuclear growth repressors – negative regulator of GAs signaling. Recent studies on GAs biosynthesis, metabolism, transport, and signaling, as well as crosstalk with other phytohormones and environment have achieved great progress thanks to molecular genetics and func

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22

Lisitskaya, Tatiana, and Tatiana Trosheva. "EFFECT OF BIOLOGICALLY ACTIVE SUBSTANCES FORMED BY BACCILUS COAGULANS TI ON THE GROWTH OF CROPS." Acta Universitatis Cibiniensis. Series E: Food Technology 17, no. 2 (December 1, 2013): 53–60. http://dx.doi.org/10.2478/aucft-2013-0012.

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Abstract The influence of cultural liquid of bacteria, Bacillus coagulans TI on the growth of several crops are studded. It was established that during the submerged cultivation on glucose-peptone medium these bacteria form gibberellins and amino acids. Pre-sowing treatment of seeds with diluted cultural liquid causes the stimulation of plants growth and improves the quality of plant biomass.

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23

Sá, Francisco V. da S., Marcos E. B. Brito, Luderlândio de A. Silva, Rômulo C. L. Moreira, Emanoela P. de Paiva, and Lauter S. Souto. "Exogenous application of phytohormones mitigates the effect of salt stress on Carica papaya plants." Revista Brasileira de Engenharia Agrícola e Ambiental 24, no. 3 (March 2020): 170–75. http://dx.doi.org/10.1590/1807-1929/agriambi.v24n3p170-175.

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ABSTRACT The salinity has complex effects on the physiological, nutritional and hormonal interactions of plants. This study aimed to evaluate the mitigating action of exogenous application of different types and concentrations of phytohormones on Carica papaya under salt stress. The experiment was conducted in greenhouse, using a randomized block design with treatments formed from a 2 x 3 x 5 factorial scheme, relative to two concentrations of salts in the irrigation water (0.6 and 2.4 dS m-1), three types of phytohormones [Auxin = indole-3-acetic acid; Cytokinin = CPPU (N-(2-chloro-pyridyl)-N

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24

Lal, Manmohan, Yachna Sood, Harvinder Singh, Amit Kumar, Ab Waheed Wani, and Sanjay Kumar. "Influence of prohexadione-calcium on temperate fruit crops – A Review." Ecology, Environment and Conservation 28 (2022): 164–72. http://dx.doi.org/10.53550/eec.2022.v28i07s.028.

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Plant growth retardants have great potential to maintain a balance between vegetative and reproductive growth of the plants. Prohexadione-calcium is reported as a novel plant growth retardant that inhibits late stages of gibberellins (GAs) biosynthesis in plants. It is emerged as one of an important management tool that an orchardist has available to control vegetative growth in plants and can enhance flowering and fruit quality. Currently, prohexadione-calcium is considered as a reduced risk compound, since it exhibits negligible toxicological effects and has been reported to degrade in highe

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25

Cohen, Ana C., Claudia N. Travaglia, Rubén Bottini, and Patricia N. Piccoli. "Participation of abscisic acid and gibberellins produced by endophytic Azospirillum in the alleviation of drought effects in maize." Botany 87, no. 5 (May 2009): 455–62. http://dx.doi.org/10.1139/b09-023.

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Azospirillum spp. are plant growth promoting bacteria (PGPB) that enhance growth by several mechanisms, including the production of phytohormones such as abscisic acid (ABA), indole-3-acetic acid (IAA), and gibberellins (GAs). Their presence may also alleviate plant water stress. In the present paper, the effects of Azospirillum lipoferum in maize ( Zea mays L.) plants treated with inhibitors of ABA and GA synthesis, fluridone (F) and prohexadione-Ca (P), respectively, and either submitted to drought stress or provided sufficient water, were analysed. Fluridone diminished the growth of plants

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Ryan, George F. "Effect of Growth Regulator and Nitrogen on Height and Branching of Skimmia reevesiana." Journal of Environmental Horticulture 3, no. 2 (June 1, 1985): 71–74. http://dx.doi.org/10.24266/0738-2898-3.2.71.

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Application of gibberellins A4 + 7 (GA4 + 7) or 6-benzylamino purine (BA) stimulated a second growth flush on plants of Skimmia reevesiana Fort. that had completed normal spring growth. Plants treated with GA4 + 7 were up to 130% taller than untreated plants at the end of the first season, and up to 50% taller after a growth flush the following spring without re-treatment. The number of shoots was increased more than 100% by BA at 4000 ppm, without affecting height. Promalin (BA + GA4 + 7) at 2000 ppm of each active ingredient increased height 50% the year of treatment, and the number of shoot

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Langille, Alan R., and P. R. Hepler. "EFFECT OF ANTI-GIBBERELLIN GROWTH RETARDANTS ON TUBERIZATION OF `KATAHDIN' POTATO LEAF BUD CUTTINGS." HortScience 27, no. 11 (November 1992): 1162a—1162. http://dx.doi.org/10.21273/hortsci.27.11.1162a.

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Non-induced Katahdin potato plants were treated with three anti-gibberellins: CCC, BAS-106 and BAS-111. Other plants were sprayed with GA3 and placed in an inducing chamber. All treatments were repeated the following week. After final treatment, apical, sub-apical, medial and basal leaf bud-cuttings were taken from each plant and placed 1n a mist chamber. After two weeks, cuttings were examined for tuberization. BAS-111 and CCC were associated with 3.5 and 2 fold increase, respectively, in tuberization of cuttings over the non-induced control. Although induced control cuttings exhibited 100% t

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Ferrante, Antonio, Anna Mensuali-Sodi, and Giovanni Serra. "Effect of thidiazuron and gibberellic acid on leaf yellowing of cut stock flowers." Open Life Sciences 4, no. 4 (December 1, 2009): 461–68. http://dx.doi.org/10.2478/s11535-009-0039-8.

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AbstractPlant hormones such as cytokinins and gibberellins are able to inhibit leaf yellowing in different species of cut flowers and potted plants. These hormones can be used alone or in combination among them for preserving chlorophyll in floriculture items. In the present study thidiazuron was tested alone or combined with GA3 for delaying leaf yellowing of cut stock flowers during vase life. Cut flowers were placed in a controlled environment and treated for 24 hours with the following solutions: distilled water (control) or solutions containing 5, 10 µM thidiazuron (TDZ), 0.5 mM gibberell

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Ranwala, N. K. Damayanthi, and Dennis R. Decoteau. "Involvement of Gibberellins in Phytochrome-regulated Stem and Petiole Elongation in Watermelon Plants." HortScience 33, no. 3 (June 1998): 493f—494. http://dx.doi.org/10.21273/hortsci.33.3.493f.

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Phytochrome-regulated stem and petiole elongation is of great horticultural importance due to their effects on height and compactness of plants. Although it is believed that phytochrome action during cell elongation is controlled via gibberellin (GA) biosynthesis, conclusive evidence has not been presented. In this study, watermelon plants pre-treated with GAs or GA biosynthesis inhibitors were briefly exposed to red (R) or far-red (FR) at the end of photoperiod to investigate the involvement of GAs in phytochrome-regulated stem and petiole elongation. Two-week-old watermelon plants were appli

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Regmi, Sudeep, and Kiran Acharya. "Effect of Plant Growth Regulators in African Marigold: A Review." Nepalese Horticulture 16, no. 1 (December 15, 2022): 7–14. http://dx.doi.org/10.3126/nh.v16i1.45005.

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African marigold, being tall enough and producing large flowers suitable for preparing garlands, is the most cultivated cultivar of marigold in Nepal. Besides, pinching and other improved cultural techniques, a number of chemicals, hormones and phyto-hormones are being tested and found to impart a varying response in African marigold. This review has its importance for standardizing the type and concentration of plant growth regulators in African marigold. Online journals, scientific papers, proceedings, books, thesis and lecture notes are the key reference site for this review. Gibberellins o

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Patil, Grete Grindal, Vibeke Alm, Roar Moe, and Olavi Junttila. "Interaction between Phytochrome B and Gibberellins in Thermoperiodic Responses of Cucumber." Journal of the American Society for Horticultural Science 128, no. 5 (September 2003): 642–47. http://dx.doi.org/10.21273/jashs.128.5.0642.

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The role of phytochrome in control of stem elongation by daily temperature alternations is unclear. The aim of this work was to study the involvement of phytochrome B in thermoperiodism in cucumber (Cucumis sativus L.), and the interaction with gibberellin (GA). The wild type and the phytochrome B deficient, long-hypocotyl (lh) cucumber mutant were grown under alternating day (DT) and night temperature (NT) and either with or without an exposure to end-of-day far-red light (EOD-FR). Without EOD-FR, hypocotyl and internodes of the wild type plants were shorter under a low DT (19 °C)/high NT (25

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Pizarro, Alberto, and Carmen Díaz-Sala. "Effect of polar auxin transport and gibberellins on xylem formation in pine cuttings under adventitious rooting conditions." Israel Journal of Plant Sciences 67, no. 1-2 (February 25, 2020): 27–39. http://dx.doi.org/10.1163/22238980-20191120.

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Maturation-related decline of adventitious root formation is one of the major factors affecting adventitious rooting in forest tree species. We demonstrate that inhibition of polar auxin transport promoted cambium and xylem differentiation in rooting-competent hypocotyl cuttings from Pinus radiata under conditions of adventitious root formation. Treatments with bioactive gibberellins inhibited rooting while at the same time inducing both the differentiation of a continuous ring of cambium and xylem formation. Treatments with inhibitors of gibberellin biosynthesis did not affect the rooting res

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Cato, Stella C., Willian R. Macedo, Lázaro Eustáquio P. Peres, and Paulo Roberto de C. e. Castro. "Sinergism among auxins, gibberellins and cytokinins in tomato cv. Micro-Tom." Horticultura Brasileira 31, no. 4 (December 2013): 549–53. http://dx.doi.org/10.1590/s0102-05362013000400007.

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The aim of this study was to evaluate the effect of isolated and combined applications of gibberellic acid (gibberellin), indolbutyric acid (auxin) and kinetin (cytokinin) on vegetative and reproductive development of tomato test plants (Solanum lycopersicum cv. Micro-Tom), to better elucidate the interactions among these hormonal classes. The following treatments were accomplished through foliar application: GA3 (5 mg L-1); IBA (5 mg L-1); KIN (9 mg L-1); GA3 + IBA (5 mg L-1 + 5 mg L-1); GA3 + KIN (5 mg L-1 + 9 mg L-1); IBA + KIN (5 mg L-1 + 9 mg L-1); GA3 + IBA + KIN (5 mg L-1 + 5 mg L-1 + 9

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Winarti, Sih, Basuki Basuki, Sri Endang Agustina Rahayuningsih, Panjaitan A. R, and Sinarmata T. J. "SIFAT KIMIA TANAH, PERTUMBUHAN DAN HASIL TANAMAN MELON (Cucumis melo L.) YANG DIBERI KASCING DAN ZAT PENGATUR TUMBUH PADA SPODOSOL." AgriPeat 23, no. 2 (October 5, 2022): 111–19. http://dx.doi.org/10.36873/agp.v23i2.5971.

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This study aims to determine the effect of vermicompost fertilizer on changes in the chemical properties of spodosol as a growing medium for melons and to determine the growth and yield of melons treated with gibberellins as growth regulators. The study used a Factorial Completely Randomized Design. The first factor is the dose of vermicompost 0, 60, 90, 120 and 150 g vermicompost per polybag equivalent to 0, 10, 15, 20 and 25 t. vermicompost ha-1. The second factor is the provision of plant growth regulators Agrogibb 40 SL given in the generative phase consisting of 2 two levels, namely: 0 an

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Daoudi, EL-Hassania, and Marc Bonnet-Masimbert. "Polyamines conjuguées et différenciation florale chez le sapin de Douglas (Pseudotsuga menziesii (Mirb.) Franco)." Canadian Journal of Botany 76, no. 5 (May 1, 1998): 782–90. http://dx.doi.org/10.1139/b98-044.

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To characterize as early as possible the status of flowering differentiation in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), the variation of bound or conjugated polyamines is studied in the shoots of young plants (6 years old) during the period covering flowering initiation (between 30 and 75 days after bud burst). These compounds are also quantified in sexual and vegetative buds. The quantitative effects of treatments susceptible to stimulate the flowering (application of gibberellins and (or) calcium nitrate) on the level of conjugated polyamines are investigated in the shoots. The c

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Evans, L. T. "Gibberellins and flowering in long day plants, with special reference to Lolium temulentum." Functional Plant Biology 26, no. 1 (1999): 1. http://dx.doi.org/10.1071/pp98092.

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The relation between gibberellins (GAs) and flowering in some long day (LD) plants is reviewed, with particular emphasis on Lolium temulentum. Lang’s early experiments with rosette plants established the effectiveness of several GAs in replacing the need for LD. Subsequent work with mutants, especially of Arabidopsis, has clarified genetic and environmental control points in GA synthesis, various feedback effects and some of the factors affecting responsiveness to, as well as synthesis of, GAs in the flowering process. Further complexities are revealed in the experiments with Lolium temulentum

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Çayan, Selin, Gölge Sarıkamış, Canan Yüksel Özmen, Umut Kibar, Eren Özden, and Ali Ergül. "The influence of exogenous gibberellic acid (GA3) and 24-epibrassinolide (24-EpiBL) on seed germination and the expression of genes involved in GA and BR synthesis/signalling in pepper (Capsicum annuum L.)." Acta Scientiarum Polonorum Hortorum Cultus 20, no. 5 (October 29, 2021): 15–23. http://dx.doi.org/10.24326/asphc.2021.5.2.

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Gibberellins (GAs) and brassinosteroids (BRs) are the plant hormones involved in various physiological processes including seed germination. In this study, the effects of exogenous gibberellic acid (GA3) and 24-epibrassinolide (24-EpiBL) treatments on the expression of key genes involved in GA and BR syntheis/signalling during seed germination were investigated in pepper (Capsicum annuum L). The expressions of BES1 and BRI1 involved in BR synthesis/signalling pathway as well as GA3OX1 and GA20OX1 associated with gibberellic acid biosynthesis in plants were determined. Exogenous GA3 treat

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Roman-García, Francisco, María Patricia Yahuaca-Mendoza, Javier Farias-Larios, J. Gerardo López-Aguirre*, Sergio Aguilar-Espinosa, and María del Rocío Flores-Bello. "Hormonal Concentration and Growth in Chili Plants Inoculated with Several Mycorrhizal Fungus, Evaluated in Different Steps." HortScience 39, no. 4 (July 2004): 832D—833. http://dx.doi.org/10.21273/hortsci.39.4.832d.

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The contribution of arbuscular endomycorrhizal fungus (AMF) on hormonal levels increase in chili plants, at different steps is currently unknown. In this experiment was evaluated the effect of Glomus sp. Zac-19, G. etunicatum and G. intraradices, inoculation mirasol and ancho cultivars, under greenhouse conditions. Plants were growing in pots containing 1 kg of substrate (3 sand: 1 soil ratio). The effect was measured on fresh fruit production and indolacetic acid, giberellin GA3 and 6-aminopurine concentration. Also plant parameters measured were: plant height, foliar area, stem diameter, roo

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Hubick, K. T., J. S. Taylor, and D. M. Reid. "The effect of drought on levels of abscisic acid, cytokinins, gibberellins and ethylene in aeroponically-grown sunflower plants." Plant Growth Regulation 4, no. 2 (1986): 139–51. http://dx.doi.org/10.1007/bf00025195.

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Turnbull, Matthew H., Richard P. Pharis, Leonid V. Kurepin, Michal Sarfati, Lewis N. Mander, and Dave Kelly. "Flowering in snow tussock (Chionochloa spp.) is influenced by temperature and hormonal cues." Functional Plant Biology 39, no. 1 (2012): 38. http://dx.doi.org/10.1071/fp11116.

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Snow tussocks (Chionochloa spp.) in New Zealand exhibit extreme mast (episodic) seeding which has important implications for plant ecology and plant–insect interactions. Heavy flowering appears to be triggered by very warm/dry summers in the preceding year. In order to investigate the physiological basis for mast flowering, mature snow tussock plants in the field and younger plants in a glasshouse and shadehouse were subjected to a range of manipulative treatments. Field treatments included combinations of warming, root pruning and applications of two native gibberellins (GAs) GA3, which is kn

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Saini, Hargurdeep S., Pawan K. Bassi, J. Stephen Goudey, and Mary S. Spencer. "Breakage of Seed Dormancy of Field Pennycress (Thlaspi arvense) by Growth Regulators, Nitrate, and Environmental Factors." Weed Science 35, no. 6 (November 1987): 802–6. http://dx.doi.org/10.1017/s0043174500079376.

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Effects of ethylene, gibberellins, kinetin, nitrate, light, and temperature, each alone or combined with other factors, were studied on the germination of dormant seed of field pennycress (Thlaspi arvenseL. # THLAR). Treated seed were incubated at a range of constant temperatures, at temperatures alternating daily between 12 and 22 C (12 h each), or at 12 C followed by transfer to 22 C. No germination ocurrred in water under any conditions. When applied in the dark KNO3had no effect on germination under any of the temperature regimes. A combination of KNO3, light, and a shift in temperature fr

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Huarte, Héctor R., María del R. Pereyra Zorraquín, Eric M. Bursztyn, and María L. Zapiola. "Effects of Environmental Factors on Seed Germination and Seedling Emergence of Common Teasel (Dipsacus fullonum)." Weed Science 64, no. 3 (September 2016): 421–29. http://dx.doi.org/10.1614/ws-d-15-00136.1.

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Common teasel is an invasive and widespread weed in Argentina. Germination experiments were carried out from 2011 to 2014 to determine the effect of various environmental factors on germination and emergence. Germination of recently dispersed seeds was 12% in darkness at constant temperature. In contrast, seed exposure to light and alternating temperatures enhanced germination to 95%. The requirement of light and alternating temperatures suggest that common teasel has physiological dormancy. Several experiments were carried out to determine whether (1) seed responses to light and alternating t

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María I, Dinolfo, Castañares Eliana, and Stenglein Sebastián A. "Fusarium–plant interaction: state of the art – a review." Plant Protection Science 53, No. 2 (February 10, 2017): 61–70. http://dx.doi.org/10.17221/182/2015-pps.

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One of the most important genera able to develop diseases in cereals is Fusarium which not only produces losses by the fungal presence but also mycotoxin production harmful to human and animal consumers. In the environment, plants are continuously threatened by abiotic and biotic stresses. Among the latter, pathogens gained importance mainly due to their ability to affect the plant fitness. To protect against potential attacks, plants have developed strategies in which phytohormones have an essential role. In plant–pathogen interactions, salicylic acid, ethylene, and jasmonates are the most im

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Ahmad, Ali, Eloy Navarro-León, María José Izquierdo-Ramos, Juan José Rios, Begoña Blasco, Iván Navarro-Morillo, and Juan Manuel Ruiz. "Analysis of RAZORMIN® as a Biostimulant and Its Effect on the Phytotoxicity Mitigation Caused by Fungicide Azoxystrobin in Pepper." Agronomy 12, no. 6 (June 13, 2022): 1418. http://dx.doi.org/10.3390/agronomy12061418.

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Use of biostimulants for stimulating plant growth and mitigating the negative impacts of biotic and abiotic stresses is a promising strategy to achieve higher crop yields. Fungicides such as azoxystrobin are used to control several pests and fungal diseases in plants but at the cost of altering various physiological processes; thereby, leading to reduced crop yields. The efficiency of the compound RAZORMIN® as a biostimulant product while taking into account its role in plant growth stimulation and fungicide azoxystrobin stress mitigation was evaluated in this study. The efficacy of RAZORMIN®

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Kopcewicz, J., G. Centkowska, K. Kriesel, and Y. Yatorska. "The effect of inductive photoperiod on flower formation and phytohormones level in a long day plant Hyoscyamus niger L." Acta Societatis Botanicorum Poloniae 48, no. 2 (2015): 255–65. http://dx.doi.org/10.5586/asbp.1979.021.

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The anatomical and hormonal investigations on a long day plant <i>Hyoscyamus niger</i> L. during the time of the generative photoinduction have been conducted. The plants were grown during 75 days on a short photoperiod and then they were transferred to long day conditions. The earliest anatomical symptoms of flower initiation were noticed after four long photoperiods. The inductive photoperiod causes also a general increase in the amounts of phytohormones. During the flower evocation the intensive accumulation of cytokinins and gibberellins in leaves takes place. The post-inductiv

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Foschi, María Laura, Mariano Juan, Bernardo Pascual, and Nuria Pascual-Seva. "Influence of Seed-Covering Layers on Caper Seed Germination." Plants 12, no. 3 (January 18, 2023): 439. http://dx.doi.org/10.3390/plants12030439.

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Caper is a perennial shrub that is widespread in the Mediterranean Basin. Although the fruits contain many seeds, they germinate slowly and with very low percentages, due to their nondeep physiological dormancy. The influence of the testa and endosperm, as well as the effect of applying gibberellic acid (GA3) solutions on seed germination to release its dormancy, are reported in this study. The mechanical resistance exerted by the testa and endosperm against radicle protrusion in mature caper seeds was measured. The best germination results were obtained with seeds devoid of testa wetted with

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Kriesel, Krystyna, and Sławomir Ciesielska. "The effect of the photoperiod on the level of endogenous growth regulators in pine (Pinus silvestris L.) seedlings." Acta Societatis Botanicorum Poloniae 51, no. 1 (2014): 59–70. http://dx.doi.org/10.5586/asbp.1982.006.

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The investigations were performed on pine seedlings growing under 12, 16 and 20 hour photoperiods. In 4 succesive stages of seedling development i.e. after 2, 12, 18 and 30 weeks of culture morphological characters of the seedlings were measured and the levels of auxins-, gibberellins-, cytokininsand abscisic acid-like inhibitor were determined. The intensity of growth and development of juvenile leaves, needles and of the shoot was the lowest in plants growing under 12 hour photoperiod conditions. As the length of the photoperiod increased so did the intensity of these processes. Under the 12

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Soares, José C., Hugo Osório, Manuela Pintado, and Marta W. Vasconcelos. "Effect of the Interaction between Elevated Carbon Dioxide and Iron Limitation on Proteomic Profiling of Soybean." International Journal of Molecular Sciences 23, no. 21 (November 7, 2022): 13632. http://dx.doi.org/10.3390/ijms232113632.

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Elevated atmospheric CO2 (eCO2) and iron (Fe) availability are important factors affecting plant growth that may impact the proteomic profile of crop plants. In this study, soybean plants treated under Fe-limited (0.5 mM) and Fe-sufficient (20 mM) conditions were grown at ambient (400 μmol mol−1) and eCO2 (800 μmol mol−1) in hydroponic solutions. Elevated CO2 increased biomass from 2.14 to 3.14 g plant−1 and from 1.18 to 2.91 g plant−1 under Fe-sufficient and Fe-limited conditions, respectively, but did not affect leaf photosynthesis. Sugar concentration increased from 10.92 to 26.17 μmol g FW

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Riko, NFN, Sitti Nurul Aini, and Euis Asriani. "Aplikasi Berbagai Konsentrasi Giberelin (GA3) Terhadap Pertumbuhan Tanaman Kailan (Brassica oleracea L.) pada Sistem Budidaya Hidroponik." Jurnal Hortikultura 29, no. 2 (June 20, 2020): 181. http://dx.doi.org/10.21082/jhort.v29n2.2019.p181-188.

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<p><strong>[<em>Application of Various Concentrations of Gibberellin</em> (<em>GA3</em>) <em>on Kailan </em></strong><br /><strong>(<em>Brassica oleracea</em> L.) <em>Growth with Hydroponic Cultivation System</em>]</strong></p><p>Giberelin adalah zat pengatur tumbuh yang banyak digunakan untuk merangsang pertumbuhan dan perkembangan pada tanaman, termasuk pada tanaman kailan yang banyak dikonsumsi. Penelitian ini bertujuan mengetahui pengaruh zat pengatur tumbuh giberelin dan konsentrasi

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Costa, Anne P., Wagner Vendrame, Sílvia Nietsche, Jonathan Crane, Kimberly Moore, and Bruce Schaffer. "Branching, flowering and fruiting of Jatropha curcas treated with ethephon or benzyladenine and gibberellins." Anais da Academia Brasileira de Ciências 88, no. 2 (May 31, 2016): 989–98. http://dx.doi.org/10.1590/0001-3765201620140635.

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Jatropha curcas L. has been identified for biofuel production but it presents limited commercial yields due to limited branching and a lack of yield uniformity. The objective of this study was to evaluate the effects of single application of ethephon or a combination of 6-benzyladenine (BA) with gibberellic acid isomers A4 and A7 (GA4+7) on branch induction, flowering and fruit production in jatropha plants with and without leaves. Plants with and without leaves showed differences for growth and reproductive variables. For all variables except inflorescence set, there were no significant stati

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