Consulta: subjectFacets:"Growth regulator"
Registros recuperados: 31
Data/hora: 08/06/2024 18:38:47

Sombra artificial y aplicación de thidiazurón en el crecimiento y fisiología de la vainilla (Vanilla planifolia Andrews).
Provedor de dados: 32
Autores: Olivares Soto, Héctor Miguel.
El objetivo de esta investigación es documentar el efecto de diferentes niveles de sombra artificial y la aplicación de TDZ sobre el número y crecimiento de brotes laterales, en la producción y distribución de la materia seca en la planta de vainilla así como el efecto en parámetros fisiológicos del intercambio de gases. Para ello, se trabajó con esquejes de vainilla, con ocho yemas. Los  niveles de sombra fueron 30, 50 y 70 %  y  0, 500  y 1000 mg-litro-1 de Thidiazurón. Se midió longitud  y diámetro de brotes, número de hojas, tasa de fotosíntesis aparente (FA), transpiración (Tr), conductancia estomática (CE), concentración intercelular de CO2 (CINT), área foliar total por planta y la distribución de peso seco a en los componentes de la planta.  No hubo...
Palavras-chave: Vanilla planifolia A.; Regulador de crecimiento; Longitud de brote; Intercambio gaseoso; Area foliar; Fotosíntesis; Materia seca; Vanilla planifolia Andrews; Growth regulator; Shoot length; Gas exchange; Total upper leaf surface; Photosynthesis; Dry mass; Maestría; Fruticultura.
Ano: 2010
URL: http://hdl.handle.net/10521/252

In vitro establishment of pepper-rosmarin nodal segments
Provedor de dados: 75
Autores: Blank,Arie F; Costa,Andréa S da; Arrigoni-Blank,Maria de Fátima; Mendonça,Aline B de; Ledo,Ana da S.
Pepper-rosmarin (Lippia sidoides Cham.) is a native medicinal plant from the Brazilian biome Caatinga. Its high economical importance comes from the antimicrobial properties of thymol and carvacrol, both present in the pepper-rosmarin essential oil. Nodal segments of pepper-rosmarin were established in vitro to evaluate different growth regulators. We tested four concentrations of IBA (0.0; 0.01; 0.05; and 0.1 mg L-1) combined with six concentrations of BAP (0.0; 0.1; 0.5; 1.0; 2.0; and 4.0 mg L-1) in assay 1; five concentrations of NAA (0.0; 0.1; 0.25; 0.5; and 1.0 mg L-1) in assay 2; two concentrations of NAA (0.0 and 0.01 mg L-1) combined with five concentrations of kinetin (0.0; 0.25; 0.5; 1.0; and 2.0 mg L-1) in assay 3; five concentrations of IAA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lippia sidoides; Medicinal plant; Micropropagation; Growth regulator.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000200025

Growth and quality of potted ornamental peppers treated with paclobutrazol
Provedor de dados: 86
Autores: França,Christiane de Fátima Martins; Ribeiro,Wellington Souto; Santos,Mirelle Nayana Sousa; Petrucci,Kharen Priscilla de Oliveira Salomão; Rêgo,Elizanilda Ramalho do; Finger,Fernando Luiz.
Abstract: The objective of this work was to evaluate the action of paclobutrazol (PBZ) on the growth and ornamental value of two pepper accessions and two commercial cultivars of ornamental pepper - Biquinho Vermelha and Bode Amarela. A PBZ aqueous solution (250 mL) was used to soak the substrate at 0, 20, 40, and 60 mg L-1 a.i. concentrations when the plants had 12 cm height. At the end of plant growth, the follwoing parameters were evaluated: plant height, chlorophyll content in leaves, number of fruit and leaves, and canopy compactness at the time the plants reached maturity to be marketed, with 30% of ripe fruit. Irrespective of the applied PBZ concentration, plant height diminished, and chlorophyll content increased. PBZ did not improve the ornamental...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Capsicum chinense; Chlorophyll; Growth regulator.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000300316

Matriconditioning integrated with gibberellic acid to hasten seed germination and improve stand establishment of pepper and tomato
Provedor de dados: 86
Autores: Andreoli,Claudinei; Khan,Anwar A.
Emergence and stand establishment of tomato (Lycopersicon lycopersicum (L.) (Karsten ex Farw) and pepper (Capsicum annus L.) seeds are often slow and erratic, particularly under stress conditions. Field emergence trials sometimes have not responded to priming in pepper. This study examined the combined effects of matriconditioning and gibberellin application on the germination and stand establishment of pepper and tomato seeds. Pepper and tomato seeds were conditioned with a solid carrier, Micro Cel E, in the presence of gibberellic acid (GA) for 1, 2 , 3 and 4 days at 15 and 25ºC. The results showed that, in all cases, even under stress conditions, the combination of matriconditioning with GA was effective in improving germination and emergence of pepper...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Priming; Growth regulator; Endosperm.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999001000023

SUNFLOWER PLANT RESPONSE TO SIMULATED DRIFT OF GLYPHOSATE AND TRINEXAPAC-ETHYL
Provedor de dados: 87
Autores: VITAL,R.G.; JAKELAITIS,A.; COSTA,A.C.; SILVA,F.B.; BATISTA,P.F.
ABSTRACT Chemical ripeners are frequently used on sugarcane crops in order to increase profitability. However, the drift of these products to neighbouring fields can expose susceptible non-target plants, such as sunflower, to these agents causing indirect impacts on growth and development. Therefore, this study aimed to assess the toxicity characterize possible changes in the growth of sunflower plants exposed to simulated drift of the ripeners glyphosate and trinexapac-ethyl. For each ripener, the following doses were used: glyphosate (0 (control), 3.6, 7.2, 14.4, 28.8 and 86.4 g a.e ha-1) and trinexapac-ethyl (0, 3.12, 6.25, 12.50, 25 and 75 g a.i ha-1). The effects of these products on plant height, number of leaves, leaf area, stem diameter and dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helianthus annus; Phytotoxicity; Herbicide; Growth regulator.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100234

Phenological Sensitivity of Two Maize Cultivars to Trinexapac-Ethyl
Provedor de dados: 87
Autores: MENDES FAGHERAZZI,M.; SOUZA,C.A.; STEFEN,D.L.V.; ZANESCO,P.R.; JUNKES,G.V.; COELHO,C.M.M.; SANGOI,L.
ABSTRACT: In Brazilian agriculture there are few reports on trinexapac-ethyl (TE) effects on maize plant lodging management. This study aimed to evaluate the effects of sequential application of TE sprayed on different plant growth stages of maize using the simple hybrid P30F53HR and the variety SCS 154 Fortuna. Experiments were carried out in a greenhouse in the 2013 and 2014 harvests. Plants were grown singly in 5L pots filled with 75% soil and 25% substrate. The experimental design was a randomized complete block with four replications. The following treatments were performed: (T1) control (no application of growth retardant); (T2) application at V2 (100 g a.i. ha-1); (T3) sequential application of 100 g a.i. ha-1 at V2 plus V3; (T4) sequential...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Growth regulator; Morphological characteristics.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100203

Naphthalene Acetic Acid and Irrigation Regimes Influence Paddy Yield and its Economics under Arid Conditions
Provedor de dados: 87
Autores: HASNAIN,Z.; BAKHSH,I.; HUSSAIN,I.; SHEHERYAR,; E.A.,KHAN.
ABSTRACT: The study aimed to highlight the impact of naphthalene acetic acid (NAA) and irrigation regimes on the productivity of coarse rice under agro-ecological conditions of Dera Ismail Khan, Pakistan. The experiment was comprised of two factors with four levels (0, 60, 90, 120 mL ha-1) of NAA and irrigation at the depths (60, 75, 90 and 105 cm) of soil profile. The data was interpreted to observe the plant height (cm), productive tillers (m-2), sterility percentage (%), biological yield (t ha-1), and grain yield (t ha-1) of coarse rice. The benefit cost ratio (BCR) was also calculated. The results indicated that the application of NAA was found very effective in improving paddy yield and hence resulted in better BCR value. The maximum paddy yield was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomic efficiency; Soil moisture; Growth regulator; Benefit-cost ratio; Oryza sativa.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100207

Growth inhibitors in turfgrass
Provedor de dados: 87
Autores: March,S.R.; Martins,D.; McElroy,J.S.
Well-maintained lawns are comfortable and safe places for leisure activities and sports practice, and they also bring environmental benefits; for example, they reduce soil exposure to erosion and releases atmospheric CO2, thus reducing the greenhouse effect. However, regardless of the purpose of use or the choice of the plant species to form the lawn, the highest costs involve cutting that is needed to keep the turfgrass at its appropriate height. Successive lawn cutting operations are necessary basically because of the vegetative and reproductive growth of turfgrass which, in Brazil, occurs mainly from October to March. Expenditures with successive mechanical cuttings have fostered the search of alternative procedures to keep lawn plants at appropriate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulator; Lawn; Bio-stimulant; Injury; Selectivity; Herbicide.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300025

Initialism as a mechanism of weed interference: can a crop plant be blinded?
Provedor de dados: 87
Autores: Vidal,R.A.; Trezzi,M.M.; Kozlowski,L.A.; Prates,M.V.B.; Cieslik,L.F.; Merotto Jr.,A.
Initialism is a new word proposed to indicate the "shade-avoidance syndrome". Plants detect the presence of neighbor plants very early in the growing season through changes in light quality. They modify the allocation of photosynthesis products privileging shoot growth over the roots. One of the hypotheses of the authors is that, when weed management is timely scheduled, a "blind" crop could be more productive because it would avoid an imbalance on the shoot:root ratio (S:R). Two strategies were developed to test this hypothesis: a) to use the classical Yoda's Law to screen several crops for insensitivity to S:R imbalance; b) to evaluate several growth regulators to control the plant responses to crowding. Experimental results confirm that both strategies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Initialism; Shade-avoidance syndrome; Genetic; Growth regulator.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000300002

EFFECT OF TRINEXAPAC-ETHYL ON GROWTH AND YIELD OF SUGARCANE
Provedor de dados: 87
Autores: FARIA,A. T.; FERREIRA,E. A.; ROCHA,P. R. R.; SILVA,D. V.; SILVA,A. A.; FIALHO,C. M. T.; SILVA,A. F.
ABSTRACT Growth regulators can be used to further retard or inhibit vegetative growth. In this sense, the objective of this study was to determine the effects of age and number of trinexapac-ethyl applications on the growth and yield of sugarcane. The experiment was in a randomized complete block design with four replications. The treatments were in a 3 x 2 + 2 factorial arrangement, where factor A corresponded to the application times of the plant growth regulator (120, 200 and 240 days after bud burst (DAB) of sugarcane) and factor B to the number of applications (one or two applications). In addition, two controls (one with three applications and another application without the regulator) were added. The application of trinexapac-ethyl decreased the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulator; Application timing; Number of applications.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000300491

Hormesis Effect of Dichlorophenoxy Acetic Acid Sub-Doses and Mepiquat Chloride on Cotton Plant
Provedor de dados: 87
Autores: AMÉRICO,G.H.P.; AMÉRICO-PINHEIRO,J.H.P.; FURLANI JR,E.
ABSTRACT: The aim of this study was to evaluate the hormesis effect of sub-doses of dichlorophenoxy acetic acid herbicide and the plant growth regulator mepiquat chloride on the vegetative and productive characteristics of two cotton cultivars (FMT 701 and Fibermax 966). The experiment was conducted from November 2013 to May 2014. The experimental design was a randomized block in a factorial scheme 6 x 2 x 2, with four replications, totaling 96 installments with 24 treatments: the witness and five sub-doses of the herbicide 2,4-D: 0.68, 1.36, 2.04, 2.72 and 3.40 g equivalent acid (e.a) per ha, with and without application of mepiquat chloride at a dose of 200 mL ha-1 in the cotton cultivars FMT 701 and Fibermax 966. The sub-doses applied were 2,4-D at 45...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum; Herbicide; Growth regulator.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100277

Nitrogen and mepiquat chloride can affect fiber quality and cotton yield
Provedor de dados: 91
Autores: Leal,Aguinaldo J. F.; Piati,Gabriel L.; Leite,Rafael C.; Zanella,Mayara S.; Osorio,Christian R. W. S.; Lima,Sebastião F.
ABSTRACT The use of mepiquat chloride (MC) in cotton (Gossypium hirsutum L.) cultivation has increased significantly in recent years. The use of MC, a growth regulator, results in higher precocity and lower height and consequently increases yield and reduces crop costs. The objective of this study was to evaluate the effects of nitrogen (N) and MC doses on fiber quality and cotton yield. This study was conducted during the 2012/13 and 2013/14 harvests in the experimental area of the Fundação de Apoio à Pesquisa Agropecuária de Chapadão, located in the municipality of Chapadão do Sul, MS, Brazil, at 18° 48’ 45.9” S, 52° 36’ 3” W, having an altitude of 820 m. The experimental design was a randomized blocks in a 5 × 4 factorial scheme comprised of five N...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum; Growth regulator; Cotton fertilization.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000400238

Low temperature storage of NAA, GA3 and 2,4-D treated citrus budsticks
Provedor de dados: 63
Autores: Salomão,Luiz Carlos Chamhum; Siqueira,Dalmo Lopes de; Lima,Sebastião Fernando Ferreira; Cecon,Paulo Roberto; Dias,José Maria Moreira; Maia,Victor Martins.
Cold storage allows citrus budstick conservation for several months, although gradual bud viability loss and abscission of leaf petioles is observed. This study aimed to maintain bud viability reducing leaf petiole abscission in budsticks of 'Baianinha' and 'Valencia' sweet oranges (C. sinensis Osbeck), 'Tahiti' lime (C. latifolia Tanaka), and 'Murcott' tangor (C. sinensis × C. reticulata), using NAA, GA3, 2,4-D, and low temperature storage. After a 15-minutes-immersion in distilled water and NAA and GA3 solutions at concentrations of 10, 100, 500 and 1000 µmol L-1, and 2,4-D solutions at concentrations of 1, 10, 50 and 100 µmol L-1, the shoots were stored in polyethylene bags at 5 ± 1ºC for 74 days. Percentage of leaf petiole abscission, fresh and dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulator; Abscission; Propagation.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000400007

Bioregulator application, agronomic efficiency, and quality of soybean seeds
Provedor de dados: 63
Autores: Ávila,Marizangela Rizzatti; Braccini,Alessandro de Lucca e; Scapim,Carlos Alberto; Albrecht,Leandro Paiola; Tonin,Telmo Antônio; Stülp,Marcibela.
The application of vegetal bioregulators has shown promising results, mainly in cultures that have already reached a high level of technology. Based on this context an experiment was carried out with the objective of evaluating agronomic traits of plants, such as yield and quality of seeds, produced by applying bioregulators to a soybean crop. For this purpose, the following treatments were carried out: before sowing - seed treatment (25, 50 and 75 mL for 100 kg-1 seeds); during sowing time - spraying on the sowing lines (pulverization onto the sowing lines) (50, 100 and 150 mL ha-1); between stages V5 and V6 (25, 50 and 75 mL ha-1); and the control - no treatment. Emergence speed, final seedling emergence, number of pods and seeds per plant, average...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth regulator; Yield; Vigor; Germination.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000600006

Growth retardants and nutrition characteristics of the Thompson seedless and Italia grape cultivars
Provedor de dados: 63
Autores: Albuquerque,Teresinha Costa Silveira de; Dechen,Antonio Roque; Castro,Paulo Roberto de Camargo e.
Two experiments were carried out in a greenhouse to evaluate the variability in macronutrient contents in relation to growth regulator sprays on ‘Thompson Seedless’ and ‘Italia’ grapevines. The treatments were: chlormequat - 1,500mg L-1; daminozide - 3,000mg L-1; uniconazole - 30mg L-1; mepiquat chloride - 300mg .L-1 and control. The cuttings were grafted on the ‘Tropical’ rootstock and were rooted in sand. After 105 days of growth they were transplanted to 35L pots with a mixture of 1:1:1 volume of sand, soil and organic matter. Grapevines were pruned each 150 days, leaving two canes with six buds each for the ‘Italia’ cultivar and with fifteen buds for the ‘Thompson Seedless’ cultivar. Water was supplied through drip irrigation (1L/plant/day). Grapevines...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis sp.; Growth regulator; Mineral nutrition.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162000000100009

Embryogenic calli induction from nucellar tissue of Citrus cultivars
Provedor de dados: 63
Autores: Mendes-da-Glória,Fernanda Januzzi; Mourão Filho,Francisco de Assis Alves; Demétrio,Clarice Garcia Borges; Mendes,Beatriz Madalena Januzzi.
Nucellar tissues of seven Citrus varieties were introduced onto three growth media to produce embryogenic callus. The media tested were: EME [MT, modified, with the addition of malt extract (500 mg.L-1)]; 1/2-EME [half concentration of MT macronutrients + half concentration of BH3 macronutrients + 500 mg.L-1 malt extract + 1.55 g.L-1 of glutamine]; and EBA [EME + 0.44 muM 6-benzyladenine + 0.04 muM 2,4 D]. Soft friable calli were obtained from 'Cravo' and 'Ponkan' mandarins (Citrus reticulata, Blanco), 'Murcott' tangor (Citrus reticulata Blanco x Citrus sinensis L. Osbeck), 'Serra d'água' and 'Valencia' sweet oranges (Citrus sinensis, L. Osbeck) 120 days after callus induction. 'Natal' and 'Pera' sweet oranges (Citrus sinensis, L. Osbeck) produced hard...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biotechnology; Tissue culture; Cultivar improvement; Growth regulator; Protoplast.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161999000500012

Características agronômicas da mandioca relacionadas à interação entre irrigação, épocas de colheita e cloreto de mepiquat - DOI: 10.4025/actasciagron.v32i1.720
Provedor de dados: 1
Autores: Souza, Myrne Jamilly Lima de; UESB; Viana, Anselmo Eloy Silveira; UESB; Matsumoto, Sylvana Naomi; UESB; Vasconcelos, Ramon Correia de; UESB; Sediyama, Tocio; UFV; Morais, Otoniel Magalhães; UESB.
O experimento foi conduzido na Universidade Estadual do Sudoeste da Bahia, em Vitória da Conquista, Estado da Bahia, no período de novembro de 2005 a maio de 2007, com o objetivo de avaliar o manejo da irrigação, épocas de colheita e efeito do cloreto de mepiquat sobre características agronômicas da mandioca. Utilizou-se o delineamento em blocos casualizados com três repetições e 16 tratamentos em parcelas subsubdivididas, formados pelas combinações entre manejo da irrigação (ausência de irrigação, irrigação durante todo o ciclo, irrigação de novembro a abril e irrigação de novembro a abril, com retomada de novembro a abril do ano seguinte), épocas de colheita (aos nove e aos 18 meses) e cloreto de mepiquat (com e sem aplicação). A colheita aos 18 meses...
Palavras-chave: 5.01.00.00-9    Agronomia amido em raízes; Produtividade de raízes tuberosas; Regulador de crescimento; Rendimento de farinha 5.01.03.00-8 root starch; Productivity of tuberous roots; Growth regulator; Flour yield.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/720

Efeito do ácido indolbutírico e épocas de estaqueamento sobre o enraizamento de estacas herbáceas de figueira (Ficus carica L.) - DOI: 10.4025/actasciagron.v31i1.6635
Provedor de dados: 1
Autores: Paula, Luciane Arantes de; UFPel; Corrêa, Luiz de Souza; UNESP; Boliani, Aparecida Conceição; UNESP; Santos, Pedro César dos; UNESP.
Este trabalho teve como objetivo verificar o efeito de seis concentrações de ácido indolbutírico (IBA) no enraizamento de estacas herbáceas de figueira (Ficus carica L.) sob nebulização intermitente, em três épocas diferentes. Os ensaios foram instalados em maio/2004, setembro/2004 e janeiro/2005, e, em cada época, o delineamento experimental utilizado foi o inteiramente casualizado, com seis concentrações de IBA (0, 500, 1.000, 1.500, 2.000, 2.500 e 3.000 mg L-1). As estacas foram coletadas na Fazenda de Ensino, Pesquisa e Extensão da Unesp, localizada no município de Selvíria, Estado de Mato Grosso do Sul, sendo padronizadas com 10 cm de comprimento e duas folhas. Após o preparo das estacas, estas foram tratadas com solução de Metiltiofan, posteriormente...
Palavras-chave: 5.01.03.04-0 Produção de Mudas Ficus carica L.; Propagação; Regulador vegetal; Enraizamento. Ficus carica L.; Propagation; Growth regulator; Rooting.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6635

Indução do enraizamento em estacas de Malvaviscus arboreus Cav. com diferentes concentrações de ácido indol–butírico (AIB) - DOI: 10.4025/actasciagron.v31i2.799
Provedor de dados: 1
Autores: Loss, Arcângelo; UFRRJ; Teixeira, Michelle Barbosa; UFRRJ; Santos, Tiago de Jesus; UFRRJ; Gomes, Vicente Martins; UENF; Queiroz, Lydia Huguenim; UFRRJ.
Foi avaliado o efeito de três concentrações de auxina (0, 2.000 e 6.000 ppm) (ácido indol-bultírico - AIB) para induzir a formação de raízes adventícias em três tipos de estacas caulinares (herbáceas, semilenhosas e lenhosas) de malvavisco (Malvaviscus arboreus Cav.). As estacas foram cortadas em bisel, com aproximadamente 12 cm cada, tratadas com o fungicida benomyl e, posteriormente, com AIB. As avaliações foram feitas 30 dias após o plantio, sendo avaliado o aparecimento ou não de calos, raízes e brotações. Entre as estacas, as lenhosas apresentaram melhor capacidade regenerativa, atingindo o máximo de tecido caloso, enraizamento e brotação, independentemente da concentração de AIB utilizada. No tratamento com AIB na concentração de 2.000 ppm, em...
Palavras-chave: 5.01.00.00-9 Agronomia Malvaceae; Propagação; Regulador de crescimento Produção de mudas Malvaceae; Propagation; Growth regulator.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/799

Brassinosteróide e substratos na aclimatização do abacaxizeiro ‘Imperial’ - DOI: 10.4025/actasciagron.v30i3.3512
Provedor de dados: 1
Autores: Catunda, Paulo Henrique Aragão; UENF; Marinho, Cláudia Sales; UENF; Gomes, Mara Menezes de Assis; IST; Carvalho, Almy Junior Cordeiro de; UENF.
O objetivo deste trabalho foi avaliar o efeito da aplicação de diferentes concentrações de um análogo de brassinosteróide (BIOBRAS – 16) e de dois substratos sobre o crescimento de mudas micropropagadas do abacaxizeiro ‘Imperial’. O experimento foi conduzido em DBC, em esquema fatorial 2 x 5 x 4, no qual foram avaliadas cinco concentrações do BIOBRAS - 16 (0; 0,1; 0,3; 0,5 e 1 mg L-1), dois tipos de substratos e quatro épocas de amostragem (60, 90, 120 e 150 dias após transplantio). Os substratos utilizados foram o Plantmax® e outro substrato obtido pela compostagem de uma mistura entre o bagaço-de-cana e torta de filtro (BT). As plântulas foram transplantadas para tubetes cônicos em casa-de-vegetação equipada com nebulizadores intermitentes. As plantas...
Palavras-chave: 5.01.00.00-9 Agronomia Ananas comosus; BIOBRAS-16; Bagaço-de-cana; Torta de filtro; Plantmax®; Regulador de crescimento 5.01.03.00-8 Fitotecnia Ananas comosus; BIOBRAS-16; Sugar-cane bagasse; Filter cake; Plantmax®; Growth regulator.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3512

Aplicação de IBA para o enraizamento de miniestacas de Eucalyptus benthamii Maiden &amp; Cambage x Eucalyptus dunnii Maiden - doi: 10.4025/actasciagron.v32i4.4879
Provedor de dados: 1
Autores: Brondani, Gilvano Ebling; Escola Superior de Agricultura "Luiz de Queiroz"/Universidade de São Paulo (ESALQ/USP); Grossi, Fernando; Universidade Federal do Paraná (UFPR); Wendling, Ivar; Embrapa Florestas-CNPF; Dutra, Leonardo Ferreira; Embrapa Clima Temperado-CPACT; Araujo, Marla Alessandra de; Universidade Federal do Paraná (UFPR).
O Eucalyptus apresenta grande importância no setor florestal e muitos avanços na área do melhoramento foram conquistados com o advento da biotecnologia. Contudo, alguns genótipos promissores ainda não possuem protocolos de multiplicação com técnicas de clonagem, como a miniestaquia. Objetivou-se avaliar concentrações de IBA na sobrevivência, enraizamento e vigor vegetativo de miniestacas de E. benthamii x E. dunnii, com a determinação da dose de máxima eficiência técnica. Minicepas dos clones H12, H19 e H20 foram manejadas em minijardim clonal em sistema semi-hidropônico. Para o enraizamento, mergulhou-se a porção basal da miniestaca em soluções hidroalcoólicas, cujas concentrações foram: 0, 2.000, 4.000, 6.000 e 8.000 mg Lde IBA. O experimento foi...
Palavras-chave: 5.01.03.04-0 Clonagem; Propagação vegetativa; Ácido indolilbutírico; Regulador vegetal; Multiplicação de genótipos superiores Produção de Mudas Cloning; Vegetative propagation; Indolebutyric acid; Growth regulator; Superior genotype multiplication.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4879

Organogênese direta de mesocótilos de arroz (Oryza sativa L.) - doi: 10.4025/actasciagron.v32i3.3443
Provedor de dados: 1
Autores: Rey, Maristela dos Santos; Programa de Pós Graduação em Fitossanidade, Universidade Federal de Pelotas; Pinho, Daiane Schimit de; Porgrama de Pós-Graduação em Biotecnologia, Universidade Federal de Pelotas; Vieira, Anieb Prestes; Iniversidade Federal de Pelotas; Braga, Eugenia Jacira Bolacel; Programa de Pós-Graduação em Fisiologia Vegetal; Pierobom, Carlos Roberto; Programa de Pós-Graduação em Fitossanidade; Peters, José Antônio; Programa de Pós-Graduação em Fisiologia Vegetal, Universidade Federal de Pelotas.
O objetivo deste estudo foi verificar o efeito do Thidiazuron (TDZ) na regeneração in vitro de mesocótilos de duas cultivares de arroz. Para tal finalidade, os explantes foram inoculados em meios MS contendo diferentes concentrações de TDZ. Os resultados indicam que ocorreu um efeito significativo da concentração do regulador de crescimento em relação à taxa de regeneração e comprimento de brotações. Para a variável comprimento das brotações houve, também, uma interação entre os fatores cultivar e concentração do regulador de crescimento. Para os brotos de primeira passagem observaram-se diferenças significativas na taxa de regeneração das cultivares, bem como entre as doses e interação entre doses e cultivares. Todas as concentrações de TDZ utilizadas...
Palavras-chave: 5.01.00.00-9 cultivo in vitro; Regeneração; Regulador de crescimento 5.01.00.00-9 in vitro culture; Regeneration; Growth regulator.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3443

Embryogenic potential of the callus of gabirobeira, Campomanesia adamantium (Cambess) O. Berg
Provedor de dados: 3
Autores: Rossato, Marieli; Schumacher, Pedro Vitor; Costa Netto, Antônio Paulino da; Stein, Vanessa Cristina; Reis, Edésio Fialho dos; Vilela, Marlúcia Souza Pádua; Paiva, Luciano Vilela.
Campomanesia adamantium is a native plant species of Brazilian Cerrado with diverse economic potential and great medicinal importance. Its sexual propagation is impaired by the recalcitrance of its seeds, which prevents effective and profitable propagation. With the purpose of establishing commercial crops and minimizing the extractive use of vegetal resources, the aim of the present study was to induce embryogenic calli in nodal segments of gabirobeira, and to determine and characterize their embryogenic phase through the establishment of a growth curve based on cellular characteristics. Calli were induced using nodal segments inoculated in WPM culture medium without the addition of hormones (control) and with different concentrations of 2,4-D, IAA, IBA,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Somatic embryogenesis; Growth regulator; Callus.
Ano: 2019
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/46358

Development of the banana plants 'Prata Anã' and 'FHIA-01' under the effect of paclobutrazol applied on the soil
Provedor de dados: 42
Autores: Maia,Emanuel; Siqueira,Dalmo L.; Salomão,luiz C.C.; Peternelli,Luiz A.; Ventrella,Marília C.; Cavatte,Rithiely P.Q.
Under some cultivation conditions, excessive growth of the pseudostem of banana plants can be considered a limiting factor, and thus, the use of growth regulators can constitute a valid alternative. This work aimed to evaluate the action of paclobutrazol on the growth of the pseudostem of banana plants and other characteristics of their development. An experiment was installed with five paclobutrazol doses (0; 0.5; 1.0; 1.5; and 2.0 g of a.i. plant-1) combined with two banana plant cultivars ('Prata Anã' and 'FHIA-01'). Paclobutrazol did not affect the number of days from planting to flowering, total leaf area and leaf emission rate. However, it increased leaf permanence on the plants and sucker number, reduced the foliar area of the leaves emitted after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Foliar area; Growth analysis; Growth regulator; Musa spp.; Suckers.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000200011

Ripening of ‘Kumagai’ guavas and anthracnose control as affected by methyl jasmonate
Provedor de dados: 53
Autores: Silva,Barbara Marçon Pereira da; Binoti,Raquel Mantovani; Cia,Patrícia; Valentini,Sílvia Regina de Toledo; Bron,Ilana Urbano.
ABSTRACT Methyl jasmonate (MJ) is an endogenous regulator that can influence fruit ripening and the defense system against pathogens. This work verified the influence of this regulator on postharvest physiology, control of anthracnose and physicalchemical attributes of ‘Kumagai’ guava (Psidium guajava L.). Guavas harvested at mature-green and ripe stages were treated with 0, 1 and 10 μmol∙L−1 MJ as gas in hermetic containers (200 L) with air circulation for 24 h. Fruit were inoculated with Colletotrichum gloeosporioides spore suspension (105 spores∙mL−1) 24 and 48 h after treatment. During ripening, at 25 °C and 80 – 90% of relative humidity, respiration, ethylene production, anthracnose incidence, severity and quality of guavas were assayed. Data were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Colletotrichum gloeosporioides; Psidium guajava L.; Growth regulator.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100167

Early somatic embryogenesis in Heliconia chartacea Lane ex Barreiros cv. Sexy Pink ovary section explants
Provedor de dados: 52
Autores: Ulisses,Cláudia; Camara,Terezinha Rangel; Willadino,Lilia; Albuquerque,Cynthia Cavalcanti de; Brito,Júlio Zoé de.
The present work evaluated the development of embryogenic callus from transversal ovary sections. The experiments were carried out under two experimental regimes using combinations of IAA (0; 5.71; 8.56; 11.42; 14.27μM) and 2,4-D (0; 13.57; 18.10; 22.62μM) or combinations of 2,4-D with BA (0; 4.43; 6.65; 8.87; 11.09μM). Assessments were made of anatomical aspects of the callus and for the presence of embryogenic structures using cytochemical and histological analyses and stereomicroscopic and scanning electronic microscopic observations. Treatments with 2,4-D and IAA produced friable calluses demonstrating cellular acquisition of morphogenetic competence as well as the formation of pro-embryogenic sectors. The expression of embryogenic program could be...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Callogenesis; Growth regulator; Histology; Scanning electron microscopy.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000100002

Influence of Plant Growth Regulators on In Vitro Shoot Multiplication and Plantlet Formation in Cassia angustifolia Vahl
Provedor de dados: 52
Autores: Siddique,Iram; Bukhari,Najat Abdullah Wahab; Perveen,Kahkashan; Siddiqui,Iffat.
ABSTRACTAn effective and improved plant regeneration system was successfully developed using shoot tip explants taken from a two years old mature plant of Cassia angustifolia. The effect of different cytokinins, [6-benzyladenine (BA), Kinetin (Kin) and thidiazuron (TDZ)] at different concentrations (0.5-10 µM) were evaluated as augmented with Murashige and Skoog (MS 1962) medium. Among all the cytokinins tested, TDZ (5.0 µM) was optimum in inducing multiple shoots as compared to BA and Kin. The rate of shoot multiplication was increased when optimal concentration (5.0 µM) of BA and Kin was tested with different concentration (0.1-1.0 µM) of Indole-3- acetic acid (IAA). Among all the combinations tested, the maximum rate of shoot multiplication was obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acclimatization; Growth regulator; Indole-3- butyric acid; Shoot tip; Senna.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000500686

Paclobutrazol and Cytokinin to Produce Iris (Iris X hollandica Tub.) in Pots
Provedor de dados: 117
Autores: Francescangeli,Nora.
Because of the increasing and diversified demand for potted plants, there is interest in Argentina in commercial iris production (Iris x hollandica Tub.). Two experiments were performed at the Instituto Nacional de Tecnología Agropecuaria (INTA), San Pedro Agricultural Experimental Station (33º41’ S, 59º41’ W), Buenos Aires Province. The effects of increasing concentrations of paclobutrazol (PBZ) and combinations of PBZ and 6-benzylaminopurine (BA) were compared. Height, length of the cycle and rate of flowering were registered. Experiment 1: the bulbs were subjected to immersion in nine concentrations of PBZ: 0, 10, 20, 30, 40, 50, 60, 70 or 80 mg L-1 for 24 h. Experiment 2: the bulbs were immersed in three concentrations of PBZ: 0, 10 or 20 mg L-1 for 24...
Tipo: Journal article
Palavras-chave: Bulbous; Growth regulator; Height.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000400005

Ethylene inhibitor aminoethoxyvinilglycine on glomerella leaf spot in apple cultivar 'Royal Gala'
Provedor de dados: 65
Autores: Bogo,Amauri; Casa,Ricardo Trezzi; Rufato,Leo; Kuhnem Júnior,Paulo Roberto; Gonçalves,Mayra Juline.
Aqueous solution of Aminoethoxyvinylglycine (AVG) has been commercialized in Brazil as ReTainTM C, 15% mainly as a potent inhibitor of ethylene biosynthesis by prevention of pre-harvest abscission and ripening of apple fruits. The effect of the product was evaluated during the 2007-08 and 2008-09 crop seasons in edafoclimatic conditions of Santa Catarina upland. Plants of 'Royal Gala' cultivar were sprayed with ReTainTM C, four weeks before the first commercial harvest at doses of 0; 62,5; 125, and 250mg a.i L-1. The incidence and severity were quantified weekly in 100 leaves distributed in four branches with 12 replications and assessed the area under the incidence -I and severity -S disease progress curve (AUIDPC and AUSDPC) of Glomerella leaf spot...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Growth regulator; Colletotrichum gloeoporioides; Incidence; Severity; Area under disease progress curve.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000600001

Growth and yield of anthurium in response to gibberellic acid
Provedor de dados: 65
Autores: Lima,Juliana Domingues; Ansante,Nathalia Felipe; Nomura,Edson Shigueaki; Fuzitani,Eduardo Jun; Silva,Silvia Helena Modenese-Gorla da.
Gibberellic acid (GA3) induces flowering of plants of various genera of the Araceae family. Therefore, it was evaluated the effect of GA3 on the growth and yield of Anthurium andraeanum cv. 'Apalai'. For this purpose, micropropagated seedlings were planted in nursery beds under 70% shade. The experimental design was completely randomized in subdivided plots with eight replications. The growth regulation effect was assessed in each plot and the time to flowering after the start of the treatments was assessed in each subplot. The GA3 concentrations were 0, 150, 300, 450 and 600mg L-1, applied every 60 days by spraying on the leaves. The applications and evaluations started after the production of marketable floral stems. Every month the number of leaves was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anthurium andraeanum Linden ex André; Gibberellin; Growth regulator; Flowering.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000801327

Floral induction management in 'Palmer' mango using uniconazole
Provedor de dados: 65
Autores: Lima,Guilherme Machado de Sousa; Pereira,Marlon Cristian Toledo; Oliveira,Moacir Brito; Nietsche,Silvia; Mizobutsi,Gisele Polete; Públio Filho,Wilson Maciel; Mendes,Débora Souza.
ABSTRACT: The objective of this study was to evaluate the effects of different doses of uniconazole (UCZ) on 'Palmer' mango vegetative and reproductive response and on fruit physical, chemical, and productive characteristics during the off-season in northern Minas Gerais, Brazil. The experiment followed a randomized block design. UCZ was tested at the following doses applied to leaves and expressed in g of UCZ active ingredient (a.i.) per tree: 0.0, 1.0, and 1.0+1.0 (2.0) after 30 days; 1.0+1.0+1.0 (3.0) subdivided into 30-day intervals; and 1.0+1.0+2.0 (4.0) subdivided into 30-day intervals. All of the UCZ treatments reduced branch elongation in the 'Palmer' mango trees, leading to a mean reduction of 81.6% compared to the control. However, the UCZ...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mangifera indica; Growth regulator; Flowering; Off-season crop; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000801350