Consulta: subjectFacets:"Plant growth regulators"
Registros recuperados: 37
Data/hora: 20/05/2024 10:39:29

Abscisic acid as a potential chemical thinner for peach
Provedor de dados: 86
Autores: Giovanaz,Marcos Antônio; Spagnol,Daniel; Bartz,Josiane; Pasa,Mateus da Silveira; Chaves,Fabio Clasen; Fachinello,José Carlos.
Abstract:The objective of this work was to evaluate the effect of abscisic acid, applied at different rates and different fruit developmental stages, on the thinning of 'Chiripá' peach. Abscisic acid (ABA) at 500 mg L-1 was applied at three stages of fruit development based on lignin deposition: stage 1, at 24 days after full bloom (DAFB); stage 2, at 40 DAFB; and stage 3, at 52 DAFB. Only ABA application at stage 2 - 40 DAFB - reduced fruit set and the number of fruit per plant. Three ABA concentrations (350, 500, and 750 mg L-1) were then applied at 40 DAFB. All rates increased fruit ethylene production and fruit abscission.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abscission; Pit hardening; Plant growth regulators; Plant hormones; Stone fruit.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015001000989

Accumulation of organic solutes and enzymatic activity in cut roses (Rosaceae) cultivated with physiological effect products in the Sub- Middle São Francisco River Valley
Provedor de dados: 65
Autores: Silva,Maria de Lourdes Neres da; Santos,Mariana Correia; Barbosa,Mayara Suzanne de Melo; Sabino,João Henrique Ferreira; Ribeiro,Hugo Leonardo Coelho; Ramos,Anamaria Ribeiro Pereira; Silva,Marcelle Almeida da; Beckmann-Cavalcante,Márkilla Zunete.
ABSTRACT: The aim of the present study was to evaluate the accumulation of carbohydrates, protein, and proline as well as the activity of the antioxidant enzymes superoxide dismutase and catalase in the Ambiance cultivar of cut rose plants grown with the application of physiological effect products in the Sub-Middle São Francisco River Valley in Brazil. The experiment was performed under a mesh screen with 50% shading. The experimental design used randomized blocks with four repetitions and six treatments: T1) control (water); T2) boscalid; T3) pyraclostrobin; T4) boscalid + pyraclostrobin (T2 + T3); T5) fluxapyroxad + pyraclostrobin; T6) plant growth regulators 4-(indol-3-yl) butyric acid (IBA) + gibberellic acid (GA3) + kinetin; these treatments were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rosa spp.; Strobilurins; Plant growth regulators; Carbohydrates; Antioxidant enzymes.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001200401

Anatomia do caule de Lycopersicon Esculentum Mill., submetido a diferentes tratamentos com reguladores vegetais
Provedor de dados: 52
Autores: Martins,Maria Bernadete Gonçalves; Castro,Paulo Roberto de Camargo e.
The effects of plant growth regulators GA3 50 mg. L-1, NAA 100 mg. L-1, CCC 1500 mg.L-1 and SADH 3000 mg.L-1 on stem anatomy of Lycopersicon esculentum Mill cv. Ângela Gigante were studied. Two sets of experiments were carried out in greenhouse during two separte periods. Anatomical studies , revealed that growth promotors induced increased xylem thickness and increased the number of tracheary elements while the growth retardants decreased xylem thickness and induced fiber formation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth regulators; Anatomy; Stem; Lycopersicon esculentum.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000200014

Applied aspects of pineapple flowering
Provedor de dados: 53
Autores: Cunha,Getúlio Augusto Pinto da.
Flowering is an amazing, integrated and complex process of multifatorial control, which due to its great importance for agriculture has been extensively studied worldwide. Pineapple is one of the main crops on which many research works about this subject have been carried out, and it was the first one to have artificially induced flowering. However, even with all those studies, pineapple flowering is not yet characterized in many aspects. The main point for the comprehension of the physiologic aspects of flowering initiation is the identification of the factors involved in the differentiation of the apical meristem into floral primordium, as well as how these factors exert their action. This work aimed to describe the flowering process of pineapple plants,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ananas comosus var. comosus; Inflorescence; Flowering control; Plant growth regulators.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052005000400001

Changes in hormonal balance as key to reserve degradation after dormancy overcoming in Annona macroprophyllata and Annona purpurea seeds
Provedor de dados: 94
Autores: Ferreira,Gisela; De-la-Cruz-Chacón,Ivan; González-Esquinca,Alma Rosa.
Abstract  Studies on the effect of the applying of phytoregulators to overcome seed dormancy have been carried out in Annonaceae species, thus the endogenous relationship between abscisic acid and gibberellins after the application of phytoregulators needs to be known in these species. Considering the importance of hormonal balance in dormancy mechanisms, the aim of this research was to elucidate how endogenous ABA and GA concentrations change after the application of phytoregulators in seeds and how these changes affect reserve degradation during germination of Annona macroprophyllata and A. purpurea seeds. Seeds were submitted to three conditions: - no soaking, soaking-in-water and soaking-in-GA4+7+benzyladenine. ABA, GA, lipids, proteins, and total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abscisic acid; Gibberellins; Germination; Lipids; Proteins; Soluble sugars; Plant growth regulators; Phytoregulators.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000602002

CHANGES IN THE CHARACTERISTICS OF ‘PRATA’ BANANA TREATED WITH CYTOKININ AND GIBBERELLIN
Provedor de dados: 94
Autores: LIMA,JULIANA DOMINGUES; ROSA,JÉSSICA SANTA; ROZANE,DANILO EDUARDO; GOMES,EDUARDO NARDINI; SILVA,SILVIA HELENA MODENESE GORLA DA.
ABSTRACT  Plant growth regulators can influence fruit yield and quality. This study aimed to evaluate the effect of cytokinin and gibberelin on the agronomic and physicochemical characteristics of banana fruits cv. ‘Prata’ (Musa spp. AAB), according to the formation period and position in the bunch. The experiment was conducted in a completely randomized 2 x 5 factorial design, two periods of bunch development (summer and winter), five treatments and ten replicates. To study the effect of position in the bunch, split plot was adopted, considering in the plot, 2 x 5 factorial and in subplots, hand 1, hand 4 and last hand. Treatments consisted of 2 pulverizations with water, 150 mg L-1 cytokinin, 200 mg L-1 of gibberellic acid, 100 mg L-1 of cytokinin plus...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Musa spp.; Plant growth regulators; Yield and quality.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000300602

EARLY SPRING APPLICATION OF AMINOETHOXYVINILGLYCINE (AVG) INCREASES FRUIT SET AND YIELD OF ‘ROCHA’ PEARS
Provedor de dados: 94
Autores: PASA,MATEUS DA SILVEIRA; CARRA,BRUNO; SILVA,CARINA PEREIRA DA; CIOTTA,MARLISE NARA; BRIGHENTI,ALBERTO FONTANELLA; PEREIRA,ADÍLSON JOSÉ.
ABSTRACT  The low fruit set is one of the main factors leading to poor yield of pear orchards in Brazil. Ethylene is associated with abscission of flowers and fruitlets. Then, the application of ethylene synthesis inhibitors, such as AVG, is a potential tool to increase fruit set of pears. The objective of this study was to evaluate the effect of AVG, sprayed at different rates and timings, on fruit set, yield and fruit quality of ‘Rocha’ pear. The study was performed in a commercial orchard located in the municipality of São Joaquim, SC, during the growing seasons of 2014/2015 and 2015/2016. Plant material consisted of ‘Rocha’ pear trees grafted on quince rootstock ‘BA29’. AVG was tested at different rates (60 mg L-1 and 80 mg L-1) and timings [full...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus communis; Plant growth regulators; Ethylene inhibitor; Fruit drop; Fruit quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000400707

Effect of gibberellic acid and the biostimulant stimulate® on the initial growth of tamarind
Provedor de dados: 94
Autores: Dantas,Ana Cristina Vello Loyola; Queiroz,João Mariano de Oliveira; Vieira,Elvis Lima; Almeida,Vanessa de Oliveira.
Plant growth regulators and biostimulants have been used as an agronomic technique to optimize the production of seedlings in various crops. This study aimed to evaluate the influence of gibberellic acid and the biostimulant Stimulate® on the initial growth of tamarind (Tamarindus indica L.). The experiments were conducted in a nursery with 50% shading, in a randomized block design with five replications and five plants per plot. Thirty eight days after sowing, the leaves were sprayed seven times a day with 0.0 (control), 0.8, 1.6, 2.4 and 3.2 mL of gibberellic acid L-1 aqueous solution and with 0.0 (control), 6.0,12.0, 18.0, and 24.0 mL Stimulate® L-1 aqueous solution. Stem diameter (SD), plant height (PH), longest root length (LRL), shoot dry mass (SDM),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tamarindus indica L.; Plant growth regulators; Seedling production.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452012000100004

Effect of picloram, additives and plant growth regulators on somatic embryogenesis of Phyla nodiflora (L.) Greene
Provedor de dados: 52
Autores: Ahmed,Abdul Bakrudeen Ali; Rao,Adhikarla Suryanarayana; Rao,Mandali Venkateswara; Taha,Rosna Mat.
The present study describes the plant regeneration via somatic embryogenesis in suspension culture derived from the leaf and stem explants of Phyla nodiflora. The medium type, plant growth regulators, complex extract (coconut milk and malt extract) and anti-oxidant (activated charcoal, ascorbic acid, Polyvinylpyrrolidone and citric acid) markedly influenced the embryo regeneration of P. nodiflora. MS with 2,4-D and activated charcoal (10 mg/L) gave the highest stimulation of embryogenic callus growth. Optimized callus was transfered into suspension culture, which showed the globular, heart shaped embryos in MS with 2,4-D + BA + picloram (0.1 mg/L), coconut milk (10 ml/L), citric acid (100 mg/L) on 6th subcultures. Further development stages such as torpedo...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Somatic embryogenesis (SEs); Picloram; Ascorbic acid; Coconut milk; Plant growth regulators; Murashige and Skoog medium.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000100002

Effect of plant growth regulators on oil yield and biodiesel production of safflower (Carthamus tinctorius L.)
Provedor de dados: 61
Autores: Ullah,Faizan; Bano,Asghari.
The aim of the present investigation was to determine the effect of plant growth regulators viz., kinetin, chlorocholine chloride (CCC) and salicylic acid (SA) on achene yield and oil quality of safflower (Carthamus tinctorius L.) cv. Thori pertaining to biodiesel production. The growth regulators were applied at 10-5M as foliar spray during flowering (140 days after sowing). Kinetin was highly effective in increasing achene yield, 100 achene weight and oil refractive index. Maximum achene oil content was found in CCC treatment. Kinetin and CCC significantly decreased oil acid value, free fatty acid content (% oleic acid) and specific gravity but increased oil pH. Kinetin was highly effective in increasing oleic acid (C18:1) but decreased the content of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Plant growth regulators; Safflower; Oil quality.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202011000100005

Effect of salicylic acid and silver nitrate on rutin production by Hyptis marrubioides cultured in vitro
Provedor de dados: 65
Autores: Pedroso,Rita Cássia Nascimento; Branquinho,Núbia Angélica de Ávila; Hara,Alessandra Cristina Boffino de Almeida Monteiro; Silva,Fabiano Guimarães; Kellner Filho,Luis Claudio; Silva,Marcio Luís Andrade; Cunha,Wilson Roberto; Pauletti,Patricia Mendonça; Januário,Ana Helena.
ABSTRACT:  Hyptis marrubioides (Lamiaceae) is a medicinal plant that is native from Brazilian Cerrado. In vitro propagation techniques make use of elicitors to alter metabolic pathways, affecting how molecules are produced both qualitatively and quantitatively. This research aimed to evaluate how abiotic elicitors salicylic acid (SA) and silver nitrate (SN) at concentrations of 30µM or 60µM influence Hyptis marrubioides seedling growth by two different in vitro culture methods. The rutin content was quantified by HPLC-DAD. Compared to an untreated culture, the H. marrubioides methanolic extracts cultured in MS medium for 10 days followed by culture in MS medium containing SN (30µM) for 20 days had 1.28 times higher rutin content. In a second experiment,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salicylic acid; HPLC-DAD; Tissue culture; Silver nitrate; Elicitation; Plant growth regulators.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000200400

Efficient In Vitro Somatic Embryogenesis and Plant Regeneration from Mature and Immature Embryos of Wheat ( Triticum aestivum L.)
Provedor de dados: 52
Autores: Ahmadpour,Roghayeh; Zare,Nasser; Asghari-Zakarta,Rasool; Sheikhzadeh,Parisa.
ABSTRACT An efficient regeneration system is a pre-requisite for the application of genetic transformation and functional genomics study of important plants. In this study, the effect of different factors (plant growth regulators, casein hydrolysate, aspartic acid and ascorbic acid) on in vitro embryogenesis and regeneration of Arta, Bahar and Zagros cultivars from mature and immature explants were investigated. Immature and mature embryos were dissected from disinfected seeds 20-25 days after pollination and imbedded mature seeds, respectively, and cultured on MS (Murashige and Skoog) medium supplemented with different compounds. The results showed that immature embryos expose high capacity of embryogenesis and regeneration in comparison with mature...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro culture; Plant growth regulators; Somatic embryogenesis; Wheat.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100206

Eficiencia de las rizobacterias promotoras del crecimiento vegetal (RPCV) en plántulas de caña de azúcar (Saccharum spp.).
Provedor de dados: 32
Autores: Morgado González, Antonio.
Las Rizobacterias Promotoras de Crecimiento Vegetal (RPCV) son una alternativa en la nutrición de plantas cultivadas, ya que estimulan su crecimiento y rendimiento, mejorando la absorción de nutrimentos, el aumento en su movilización, la producción de antibióticos y de reguladores de crecimiento. La caña de azúcar (Saccharum spp.) es un cultivo muy demandante de nutrimentos y de alto rendimiento en México,  el uso de las RPCV es fundamental para mejorar su rentabilidad. En esta investigación, se evaluó la efectividad en producción de índoles totales por el método Salkowski, solubilización de fosfatos con medio Pikovskaya  de 24 cepas bacterianas de siete especies, y su impacto en el desarrollo de vitroplantas de caña de azúcar de la variedad Mex 69-290 al...
Palavras-chave: Nutrición vegetal; Biofertilizantes; Desarrollo; Fosfatos solubles; Fitohormonas; Plant nutrition; Biofertilizers; Plant development; Soluble phosphates; Plant growth regulators; Fisiología Vegetal; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2078

Estabelecimento de protocolo para multiplicação in vitro de Bastão-do-imperador (Etlingera elatior) Jack RM Sm. - doi: 10.4025/actasciagron.v32i4.4830
Provedor de dados: 1
Autores: Colombo, Larissa Abgariani; UEL; Assis, Adriane Marinho de; UEL; Faria, Ricardo Tadeu de; UEL; Roberto, Sergio Ruffo; UEL.
O objetivo deste trabalho foi estabelecer um protocolo para a multiplicação in vitro de Bastão-do-imperador (Etlingera elatior). Brotos axilares foram inoculados em meio MS contendo as seguintes concentrações de reguladores de crescimento durante a fase de isolamento: testemunha; BAP 2,25 mg L-1; BAP 2,25 mg L-1 + ANA 0,93 mgL-1; BAP 2,25 mg L-1 + AIA 0,87 mg L-1; BAP 4,95 mg L-1; BAP 4,95 mg L-1 + ANA 0,93 mg L-1; BAP 4,95 mg L-1 + AIA 0,87 mg L-1. As brotações provenientes desta fase foram subcultivadas em um novo meio de cultura MS: testemunha; BAP 2,25 mg L-1; BAP 3,37 mg L-1; BAP 4,50 mg L-1; BAP 2,25 mg L-1 + ANA 1,12 mg L-1; BAP 3,37 mg L-1 + ANA 2,25 mg L-1; BAP 4,50 mg L-1 + ANA 3,37 mg L-1 e avaliou-se a taxa de multiplicação dos brotos por...
Palavras-chave: 5.01.03.04-0 Zingiberaceae; Micropropagação; Reguladores de crescimento Produção de mudas Zingiberaceae; Micropropagation; Plant growth regulators.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4830

Growth Stimulating Influence of Foliage Applied Brassica Water Extracts on Morphological and Yield Attributes of Bread Wheat under Different Fertilizer Regimes
Provedor de dados: 87
Autores: SHAHZAD,B.; CHEEMA,S.A.; FAROOQ,M.; CHEEMA,Z.A.; REHMAN,A.; ABBAS,T.
ABSTRACT: This study was conducted to explore the growth stimulating effect of foliage applied brassica water extract on growth and productivity of bread wheat (cv. Punjab 2011) at low and high fertilizer doses. The brassica water extract (5%) and the commercial growth regulator benzyl amino purine (BAP) (5 ppm) were applied alone and in combination at 30 and 45 days after sowing (DAS) under low fertilizer dose (125 kg ha-1 N and 90 kg ha-1 P) and high fertilizer doses (225 kg ha-1 N and 150 kg ha-1 P). Application of the brassica water extract (5%) significantly improved morphological traits such as crop growth rate, leaf elongation, leaf area index, plant height and number of productive tillers under both fertilizer regimes. Similarly, growth regulator...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fertilizer; Allelopathic water extracts; Plant growth regulators; Brassinolide.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100315

In silico analysis of phytohormone metabolism and communication pathways in citrus transcriptome
Provedor de dados: 74
Autores: Quecini,Vera; Torres,Gisele A.M.; Rosa Jr,Vicente E. de; Gimenes,Marcos A.; Machado,Jeanne B. de M.; Figueira,Antonio V. de O.; Benedito,Vagner; Targon,Maria Luisa P.N.; Cristofani-Yaly,Mariângela.
Plant hormones play a crucial role in integrating endogenous and exogenous signals and in determining developmental responses to form the plant body throughout its life cycle. In citrus species, several economically important processes are controlled by phytohormones, including seed germination, secondary growth, fruit abscission and ripening. Integrative genomics is a powerful tool for linking newly researched organisms, such as tropical woody species, to functional studies already carried out on established model organisms. Based on gene orthology analyses and expression patterns, we searched the Citrus Genome Sequencing Consortium (CitEST) database for Expressed Sequence Tags (EST) consensus sequences sharing similarity to known components of hormone...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Defense responses; Development; Plant growth regulators.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500002

In vitro morphogenesis and cell suspension culture establishment in Piper solmsianum C. DC. (Piperaceae)
Provedor de dados: 39
Autores: Balbuena,Tiago Santana; Santa-Catarina,Claudete; Silveira,Vanildo; Kato,Massuo Jorge; Floh,Eny Iochevet Segal.
Piper solmsianum is a shrub from Southeast Brazil in which many biologically active compounds were identified. The aim of this work was to establish a cell suspension culture system for this species. With this in mind, petiole and leaf explants obtained from in vitro plantlets were cultured in the presence of different plant growth regulator combinations (IAA, NAA, 2,4-D and BA). Root and indirect shoot adventitious formation, detected by histological analysis, was observed. Besides the different combinations of plant growth regulators, light regime and the supplement of activated charcoal (1.5 mg.l-1) were tested for callus induction and growth. Cultures maintained in light, on a 0.2 mg.l-1 2,4-D and 2 mg.l-1 BA supplemented medium, and in the absence of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Callogenesis; Cell suspension culture; Morphogenesis; Pariparoba; Plant growth regulators.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000100029

In vitro morphogenic response from zygotic embryos of Genipa americana
Provedor de dados: 65
Autores: Oliveira,Annie Carolina Araújo de; Machado,Caroline de Araújo; Oliveira,Leila Albuquerque Resende de; Silva,Ana Veruska Cruz da; Lédo,Ana da Silva.
ABSTRACT: The aim of this study was to evaluate the in vitro morphogenic potential of genipap (Genipa americana L.) zygotic embryos. Seeds obtained from ripe fruits had their zygotic embryos excised and inoculated in MS medium with 4.44µM of 6-benzylaminopurine (BAP) and supplemented with 0.0; 1.07; 2.14 and 3.21µM of naphthalene acetic acid (NAA). The potential of explants regeneration and the shoot length and number of leaves in plantlets were evaluated. The in vitro regeneration of genipap is possible from the conversion of zygotic embryos in a MS medium with 4.44µM BAP supplemented with 3.21µM NAA.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant tissue culture; Plant growth regulators; Callus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001000402

In vitro organogenesis from internodal segments of adult sweet orange plants
Provedor de dados: 86
Autores: Bassan,Meire Menezes; Mourão Filho,Francisco de Assis Alves; Miyata,Luzia Yuriko; Mendes,Beatriz Madalena Januzzi.
The objective of this work was to optimize in vitro plant regeneration via organogenesis from tissues of adult 'Hamlin', 'Pêra', and 'Valência' sweet orange plants. Explants were grown in EME culture medium with different concentrations of 6-benzylaminopurine (BAP) and naphthaleneacetic acid (NAA), at 27ºC in the absence of light for 50 days, followed by a 16-hour photoperiod for 20 days. Regeneration was assessed 50 and 70 days after in vitro culture. Organogenesis in cultivars Hamlin and Valência was promoted by EME supplemented with BAP, while NAA showed no apparent effect.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Citrus sinensis; Adventitious buds; Biotechnology; Plant growth regulators.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000600015

In vitro plant regeneration system for common bean (Phaseolus vulgaris): effect of N6-benzylaminopurine and adenine sulphate
Provedor de dados: 69
Autores: Gatica Arias,Andrés M; Muñoz Valverde,Jenny; Ramírez Fonseca,Pilar; Valdez Melara,Marta.
A method for regeneration of the commercially important common bean (Phaseolus vulgaris ) using N6-benzylaminopurine(BAP) and adenine sulphate (AS) was established. Embryogenic axes of the Costa Rican common bean cultivars Bribrí, Brunca, Guaymí, Huetar and Telire were cultured on Murashige and Skoog medium supplemented with 100 mgl-1 myo-inositol, 1 mgl-1 thiamine, 30 gl-1 sucrose, BAP (0, 5 and 10 mgl-1), AS (0, 20 and 40 mgl-1) and 8 gl-1 agar. Regardless of the concentration of BAP and AS in the induction medium, the number of shoots and leaves differed significantly among the common bean cultivars evaluated. The higher average of shoots was obtained for Brunca &gt; Telire &gt; Bribrí &gt; Guaymí &gt; Huetar. Moreover, independently of the cultivar,...
Tipo: Journal article
Palavras-chave: Common bean; In vitro culture; Morphogenesis; Phaseolus vulgaris L.; Plant growth regulators.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000100006

In vitro Propagation of Cedar (Cedrela odorata L.) from Juvenile Shoots
Provedor de dados: 117
Autores: García-Gonzáles,Rolando; Delgado,Miladys; González,Yailín; González,Aníbal; Garriga,Miguel; Caligari,Peter  D.S; Carrasco,Basilio; Quiroz,Karla.
Cedrela odorata L. is one of the most important timber species currently traded in the Caribbean and Central America; however, it has been intensively exploited. In vitro techniques and clonal propagation can help to develop new plantations and assist in establishing improvement programs for this species. The aim of this study was to develop a protocol to establish in vitro conditions and to micropropagate this species from nodal explants from juvenile cuttings taken from field trees. Disinfection of node explants with 5% propiconazole CE 25 during 3 min resulted in 100% explant disinfection and 60% morphogenic response on those established explants. Shoot development was optimized by cultivating in vitro node explants in Murashige and Skoog basal medium...
Tipo: Journal article
Palavras-chave: Organogenesis; In vitro propagation; In vitro rooting; Plant growth regulators.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300005

In vitro shoot regeneration of boldo from leaf explants
Provedor de dados: 65
Autores: Mota,Monalize Salete; Bandeira,Juliana de Magalhães; Braga,Eugenia Jacira Bolacel; Bianchi,Valmor João; Peters,José Antonio.
A shoot regeneration system for Plectranthus neochilus was studied from leaf explants. Leaves developed under in vitro conditions were cultured on Wood Plant Medium supplemented with 0.2mg dm-3 α-naphthaleneacetic acid (NAA) and different 6-benzilaminopurine (BAP) or thidiazuron (TDZ) concentrations (0, 1.5, 3.0, 4.5 and 6.0mg dm-3). An increase in percentage of responsive explants (85.3%) and in the number of shoots developed per explant (3.2) was observed when the explants were treated with 5.3 and 4.7mg dm-3 BAP, respectively. The leaf explants cultured on media supplemented with TDZ became vitreous and did not form buds. The regeneration system used is efficient for boldo bud induction and shoot development, showing high potential for advanced cellular...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plectranthus neochilus; Organogenesis; Plant growth regulators.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010001000026

Influence of Silver Nitrate on Somatic Embryogenesis Induction in Arabica Coffee (Coffea arabica L.)
Provedor de dados: 52
Autores: Rojas-Lorz,Laura; Arrieta-Espinoza,Griselda; Valdez-Melara,Marta; Pereira,Luiz Filipe Protasio; Gatica-Arias,Andrés.
Abstract The influence of silver nitrate (AgNO3), benzyladenine (BAP), and indole-3-acetic acid (IAA) on low frequency somatic embryogenesis (LFSE) induction in Caturra and Catuaí arabica coffee was evaluated. For the Caturra cultivar, the production of somatic embryos was significantly increased by adding AgNO3 to the semisolid culture medium. The highest average number of somatic embryos for this cultivar was obtained using 6.6 μM BAP, 2.85 μM IAA, and 40 μM AgNO3. In contrast, for the Catuaí cultivar, the highest average number of somatic embryos was obtained using semisolid medium supplemented with 8.8 μM BAP, and 2.85 μM IAA. Using these protocols, somatic embryos were directly induced using leaf sections of in vitro plants of both coffee cultivars...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffee; Silver nitrate; Somatic embryos; Plant growth regulators; Tissue culture.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100408

Inhibitory effect of jasmonic acid and ethylene on epicotyl growth and bud induction in the maritime pine, Pinus pinaster Soland. in Ait
Provedor de dados: 47
Autores: Martin,Maria Teresa; Pedranzani,Hilda; García-Molinero,Patricia; Pando,Valentin; Sierra-de-Grado,Rosario.
Two independent parameters, epicotyl height (cm) and number of induced buds were studied on Pinus pinaster explants to analyse the effects of three phytohormones (6-benzylaminopurine, jasmonic acid, ethylene) which were combined or not in 11 different treatments. Epicotyle length diminished significantly in relation to the control medium (medium without exogen phytohormones) in presence of jasmonic acid, 6-benzylaminopurine or Ethephon (which is converted to ethylene in plants) in any of treatments. Concentrations of 100 &amp;#956;M of jasmonic acid and Ethephon had a greater inhibitory effect than the treatments with 10 &amp;#956;M. In addition to that, jasmonic acid was a stronger inhibitor than Ethephon in any of the tried combinations. There were no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Micropropagation; Phytohormones; Plant growth regulators; 6-benzylaminopurine; In vitro plant culture.
Ano: 2009
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452009000300002

Meristem culture and subsequent micropropagation of Chilean strawberry (Fragaria chiloensis (L.) Duch.)
Provedor de dados: 48
Autores: Quiroz,Karla A.; Berrios,Miguel; Carrasco,Basilio; Retamales,Jorge B.; Caligari,Peter D. S.; García-Gonzáles,Rolando.
Abstract  Background: Vegetative propagation of Fragaria sp. is traditionally carried out using stolons. This system of propagation, in addition to being slow, can spread plant diseases, particularly serious being viral. In vitro culture of meristems and the establishment of micropropagation protocols are important tools for solving these problems. In recent years, considerable effort has been made to develop in vitro propagation of the commercial strawberry in order to produce virus-free plants of high quality. These previous results can serve as the basis for developing in vitro-based propagation technologies in the less studied species Fragaria chiloensis.  Results: In this context, we studied the cultivation of meristems and establishment of a...
Tipo: Journal article
Palavras-chave: Fragaria chiloensis; Meristem culture; Plant growth regulators; Virus elimination; Plant morphogenesis.
Ano: 2017
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100404

METAMITRON REPLACING CARBARYL IN POST BLOOM THINNING OF APPLE TREES
Provedor de dados: 94
Autores: PETRI,JOSÉ LUIZ; COUTO,MARCELO; GABARDO,GENTIL CARNEIRO; FRANCESCATTO,POLIANA; HAWERROTH,FERNANDO JOSÉ.
ABSTRACT  Carbaryl or the mixture of carbaryl with NAA (naphthalene acetic acid) or BA (benzyladenine) are the post-bloom chemical thinners most widely used in apple thinning in Brazil. The marketing restriction of carbaryl demands new options of apple post-bloom thinners, requiring the evaluation of others compounds for this purpose. Metamitron is one of the substances that may be used in chemical thinning of apples. Metamitron was evaluated at two concentrations, alone or in mixture with BA, in ‘MaxiGala’, ‘Fuji Suprema’ and ‘Fred Hough’ apple cultivars. Applications of metamitron at 384 mg L-1 and at 768 mg L-1 in a mixture with BA, ranging from 40 mg L-1 to 80 mg L-1, sprayed on fruits with diameter ranging from 5 to 25 mm were compared with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant growth regulators; Concentration; Fruit set; Fruit production.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400705

Micropropagation of Stevia rebaudiana plants
Provedor de dados: 65
Autores: Rokosa,Marta Teresa; Kulpa,Danuta.
ABSTRACT:  The aim of the study was to develop optimum composition of plant growth regulators in media for the propagation and rooting of shoots of stevia (Stevia rebaudiana Bertoni) in in vitro cultures. Single-node shoot fragments obtained from plants propagated on MS medium were placed onto media supplemented with: BAP, 2iP and KIN at concentrations: 0.5, 1, 2 and 5 mg∙dm-3, whereas at the rooting stage with addition of: IAA, IBA and NAA at concentrations 1, 2, 4 and 8 mg∙dm-3. The highest number of shoots and leaves was reported for plants propagated on MS medium enriched with 0.5 mg∙dm-3 BAP. The greatest number of the longest roots was developed by stevia on the MS medium enriched with 1 mg∙dm-3 IAA.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Micropropagation; Plant growth regulators; Cytokinins; Auxins; Steviosides.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100403

Organogenesis from leaf and internode explants of Ophiorrhiza prostrata, an anticancer drug (camptothecin) producing plant
Provedor de dados: 69
Autores: Shahanaz Beegum,A; Poulose Martin,Kottackal; Zhang,Chun-Lai; Nishitha,I. K.; Ligimol,; Slater,Adrian; Madhusoodanan,P. V.
Camptothecin (CPT) analogues and derivatives serve as a novel class of effective anticancer agents that exert their action against DNA topoisomerase I. This paper presents procedures for the rapid, high frequency regeneration of a camptothecin producing plant, Ophiorrhiza prostrata D. Don from leaf and internode explants via shoot organogenesis. The concentrations of plant growth regulators and explant types exhibited discrete roles in the efficacy of shoot induction. N6-benzyladenine (BA) was the most effective cytokinin for the induction of shoots. Murashige and Skoog (MS) medium with 8.87 µM BA and 2.46 µM indole-3-butyric acid (IBA) yielded the highest number of shoots from leaf and internode explants (76.0 and 90.8 shoots respectively). In the case of...
Tipo: Journal article
Palavras-chave: Camptothecin; Medicinal plant; Ophiorrhiza prostrata; Plant growth regulators.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000100011

Phenolic compound production and biological activities from in vitro regenerated plants of gherkin (Cucumis anguria L.)
Provedor de dados: 69
Autores: Thiruvengadam,Muthu; Chung,Ill-Min.
Background The effect of polyamines (PAs) along with cytokinins (TDZ and BAP) and auxin (IBA) was induced by the multiple shoot regeneration from leaf explants of gherkin (Cucumis anguria L.). The polyphenolic content, antioxidant and antibacterial potential were studied from in vitro regenerated and in vivo plants. Results Murashige and Skoog (MS) medium supplemented with 3% sucrose containing a combination of 3.0 µM TDZ, 1.0 µM IBA and 75 µM spermidine induced maximum number of shoots (45 shoots per explant) was achieved. Regenerated shoots elongated in shoot elongation medium containing 1.5 µM GA3 and 50 µM spermine. The well-developed shoots were transferred to root induction medium containing 1.0 µM IBA and 50 µM putrescine. Rooted plants were...
Tipo: Journal article
Palavras-chave: Biological activities; Cucumis anguria; Multiple shoot induction; Plant growth regulators; Polyamines; Polyphenolic content.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000400007

Physiological and agronomic traits of cabbage plants hybrid Fuyutoyo ® sprayed with plant growth regulators
Provedor de dados: 75
Autores: Zeist,André R; Piva,Rafael; Resende,Juliano TV; Silva,Israel FL; Athanázio,João C; Rodrigues,João D.
ABSTRACT In this study we aimed to evaluate the effect of using the mixture of plant growth regulators auxin, gibberellin and cytokinin in the physiological behavior and productive components of cabbage plants hybrid Fuyutoyo®. The experimental design was completely randomized, with four replications, evaluating five doses of the mixture of plant growth regulators, in the form of the commercial product   Stimulate® (0, 50, 100, 150 and 200 mL p.c./100 L H2O). The spray applications of plant growth regulators started when the plants presented 7-8 expanded leaves, carried out fortnightly, totaling five applications along the cycle. The authors evaluated gas exchange measures; fresh mass, diameter and firmness of “heads”; and number of leaves. The study...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brassica oleracea var. capitata; Plant growth regulators; Gas exchange.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000200210

Plant growth regulators on the pre-harvest period of 'Pêra' oranges
Provedor de dados: 65
Autores: Almeida,Isolina Maria Leite de; Ono,Elizabeth Orika; Rodrigues,João Domingos.
This research evaluated the effects of auxins and gibberellins applied at pre-harvest on the quality of orange juice. Orange trees, Citrus sinensis Osbeck, cv. 'Pêra' were sprayed in three applications, at 45-day intervals, with the following treatments: GA3 + 2,4-D at 12.5mg L-1 each; GA3 + 2,4-D at 25mg L-1; GA3 + 2,4-D at 37.5mg L-1; GA3 + NAA at 12.5mg L-1; GA3 + NAA at 25mg L-1; GA3 + NAA at 37.5mg L-1; NAA + 2,4-D at 12.5mg L-1; NAA + 2,4-D at 25mg L-1; NAA + 2,4-D at 37.5mg L-1, and a control. The treatments did not change juice quality, and showed no plant growth regulator residues 110 days after the last application in every case below 0.05mg L-1.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis; Internal quality; Plant growth regulators; Residue.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000300011

Prohexadione calcium reduces vegetative growth and increases fruit set of ‘Smith’ pear trees, in Southern Brazil
Provedor de dados: 53
Autores: Carra,Bruno; Spagnol,Daniel; Abreu,Everton Sozo de; Pasa,Mateus da Silveira; Silva,Carina Pereira da; Hellwig,Cristiano Geremias; Fachinello,José Carlos.
ABSTRACT Prohexadione calcium (P-Ca) has been reported to effectively control shoot growth in several pear cultivars, but with a few reports about its efficiency under the climatic conditions of southern Brazil. Therefore, the objective of this study was to evaluate vegetative growth, production, and fruit quality of ‘Smith’ pear trees in response to the use of different rates of P-Ca in the climatic conditions of southern Brazil. The experiment was conducted during the 2013/2014 and 2014/2015 seasons, in a 6-year-old ‘Smith’ pear orchard, trained to a central-leader system, with spacing of 1.5 × 4.8 m, grafted onto Pyrus calleryana Decne. Different P-Ca rates were applied (100, 200, 300, and 400 mg∙L–1) in different stages: first, in early spring for all...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus sp.; Vigor; Plant growth regulators; Return bloom; Fruit quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000300360

Regulation of in vitro somatic embryogenesis with emphasis on to the role of endogenous hormones
Provedor de dados: 93
Autores: JIMÉNEZ,VÍCTOR M.
Different aspects of the in vitro somatic embryogenesis regulation are reviewed in this paper.work. A description of g General aspects, such as terminology, uses, stages of development and factors associated with the somatic embryogenesis, are described. is carried out. Although a brief description ofn the effects of the addition of different plant growth regulators to the culture medium wasis given, the article is centereds itself on the effect that the endogenous hormone concentrations in the initial explants and in the tissue cultures derived from them could play oin the induction and expression of somatic embryogenesis. It is significant that few to emphasize the low amount of systematic studies have been conducted, in this subject, in which different...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: In vitro morphogenesis; Embryo regeneration; Embryogenic competence; Plant growth regulators; Hormones.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000200008

Rhipsalis grandiflora Haw. (Cactaceae) propagation by setem cuttings
Provedor de dados: 63
Autores: Stancato,Giulio Cesare; Aguiar,Francismar Francisco Alves; Kanashiro,Shoey; Tavares,Armando Reis; Catharino,Eduardo Luís Martins; Silveira,Rosiris Bergemann de Aguiar.
The genus Rhipsalis is being cultivated as a potted plant since the view of the pendant branches with coloured flowers and fruit is very appreciated. Considering that there is no information about the production of rooted propagules of these species, the goal of this work was to evaluate the development of stem cuttings, stimulated by the application of plant growth regulators. The indolebutyric acid (IBA) was tested at 0; 4.07; 5.81, and 11.63 mmol L-1 and the naphthaleneacetic acid (NAA) at 0; 4.53; 6.47, and 12.94 mmol L-1 for their activity in promoting roots on apical stem segments of Rhipsalis grandiflora Raw. The base of stem cuttings was dipped into auxin solutions mixed with talc and each one was partially embedded in fir bark (Pinus sp) and fern...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhipsalidinae; Articles; Plant growth regulators.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400007

Salt tolerance and regulation of gas exchange and hormonal homeostasis by auxin-priming in wheat
Provedor de dados: 86
Autores: Iqbal,Muhammad; Ashraf,Muhammad.
The objective of this work was to assess the regulatory effects of auxin-priming on gas exchange and hormonal homeostasis in spring wheat subjected to saline conditions. Seeds of MH-97 (salt-intolerant) and Inqlab-91 (salt-tolerant) cultivars were subjected to 11 priming treatments (three hormones x three concentrations + two controls) and evaluated under saline (15 dS m-1) and nonsaline (2.84 dS m-1) conditions. The priming treatments consisted of: 5.71, 8.56, and 11.42 × 10-4 mol L-1 indoleacetic acid; 4.92, 7.38, and 9.84 × 10-4 mol L-1 indolebutyric acid; 4.89, 7.34, and 9.79 × 10-4 mol L-1 tryptophan; and a control with hydroprimed seeds. A negative control with nonprimed seeds was also evaluated. All priming agents diminished the effects of salinity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Triticum aestivum; Hormonal balance; Plant growth regulators; Salinity; Seed priming; Stomatal regulation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000900004

Thidiazuron (TDZ) increases fruit set and yield of ‘Hosui’ and ‘Packham’s Triumph’ pear trees
Provedor de dados: 42
Autores: PASA,MATEUS S.; SILVA,CARINA P. DA; CARRA,BRUNO; BRIGHENTI,ALBERTO F.; SOUZA,ANDRÉ LUIZ K. DE; PETRI,JOSÉ LUIZ.
ABSTRACT The low fruit set is one of the main factors leading to poor yield of pear orchards in Brazil. The exogenous application of thidiazuron (TDZ) and aminoethoxyvinilglycine (AVG) has shown promising results in some pear cultivars and other temperate fruit trees. The objective of this study was to evaluate the effect of TDZ and AVG on fruit set, yield, and fruit quality of ‘Hosui’ and ‘Packham’s Triumph’ pears. The study was performed in a commercial orchard located in São Joaquim, SC. Plant material consisted of ‘Hosui’ and ‘Packham’s Triumph’ pear trees grafted on Pyrus calleryana. Treatments consisted on different rates of TDZ (0 mg L-1, 20 mg L-1, 40 mg L-1 and 60 mg L-1) sprayed at full bloom for both cultivars. An additional treatment of AVG 60...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pyrus sp.; Fruit drop; Plant growth regulators; Cytokinin; Fruit quality.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603103

ผลของ IBA ต่อการออกรากของกิ่งปักชำพลัมญี่ปุ่น (Prunus salicina Lindl.)ในช่วงเวลาต่างๆ
Provedor de dados: 106
Autores: Umavadee Limsateankun.
Special Problem (B.S. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Prunus salicina; Japanese plum; Stem cutting; IBA; Indolebutyric acid; Plant growth regulators; Root growth stimulation; พลัมญี่ปุ่น; การปักชำกิ่ง; การขยายพันธุ์; ฮอร์โมนไอบีเอ; สารควบคุมการเจริญเติบโต; การกระตุ้นการเกิดราก.
Ano: 2000
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5489