Consulta: subjectFacets:"Phytohormone"
Registros recuperados: 10
Data/hora: 18/06/2024 05:35:09

MECHANISMS AND PRACTICAL CONSIDERATIONS INVOLVED IN PLANT GROWTH PROMOTION BY RHIZOBACTERIA
Provedor de dados: Journal of Soil Science and Plant Nutrition
Autores: Martínez-Viveros,O; Jorquera,M.A; Crowley,D.E; Gajardo,G; Mora,M.L.
Rhizobacteria are capable of stimulating plant growth through a variety of mechanisms that include improvement of plant nutrition, production and regulation of phytohormones, and suppression of disease causing organisms. While considerable research has demonstrated their potential utility, the successful application of plant growth promoting rhizobacteria (PGPR) in the field has been limited by a lack of knowledge of ecological factors that determine their survival and activity in the plant rhizosphere. To be effective, PGPR must maintain a critical population density of active cells. Inoculation with PGPR strains can temporarily enhance the population size, but inoculants often have poor survival and compete with indigenous bacteria for available growth...
Tipo: Journal article
Palavras-chave: Agricultural inoculant; Phytohormone; Phytopathogen biocontrol; Plant nutrition; Rhizosphere.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100006

Physiological potential of Oryza sativa seeds treated with growth regulators at low temperatures
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Grohs,Mara; Marchesan,Enio; Tomazetti,Marcos Belinazzo; Roso,Rodrigo; Formentini,Tiago Constante.
ABSTRACT  The rapid and uniform establishment of rice crops is important for improving production. However, this condition is influenced by several factors, including the soil temperature when planting, which may delay seed germination and compromise the final stand. The aim of this study was to evaluate the behaviour of substances which have the effect of growth regulator when applied to the seeds of different rice cultivars under low-temperature conditions. The experiment was carried out in a completely randomised design with four replications in a bi-factorial scheme, where factor A was represented by the different products (gibberellic acid - AG3, tiamethoxam - TMX, Haf Plus® - HAF, and a control with water - TEST), and factor B by the irrigated rice...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigated Rice; Phytohormone; Insecticide; Organo-mineral fertilizer.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000300473

Chloroplast ultrastructure and hormone endogenous levels are differently affected under light and dark conditions during in vitro culture of Guadua chacoensis (Rojas) Londoño &amp; P. M. Peterson.
Provedor de dados: Acesso Livre à Informação Científica da Embrapa (Repositório Alice)
Autores: POLESI, L. G.; FRAGA, H. P. F. de; VIEIRA, L. do N.; HERINGER, A. S.; ORNELLAS, T. S.; SANTOS, H. P. dos; GUERRA, M. P.; PESCADOR, R.
Guadua chacoensis (Poaceae) is a woody bamboo native from the Atlantic forest biome. Morphogenetic and physiological studies are scarce in bamboos, and tissue culture-based biotechnologies tools can be used to investigate ultrastructure and physiological processes as well as to mass-propagate specific genotypes. This study evaluated the effect of light and dark conditions on chloroplast biogenesis as well as in the endogenous levels of zeatin (Z), abscisic acid (ABA), gibberellic acid (GA4), and jasmonic acid (JA) during in vitro culture of G. chacoensis. An increase was observed, followed by a decrease in starch content in response to light treatment, and in contrast, in darkness, an accumulation of starch which is associated to amyloplast formation at...
Tipo: Artigo de periódico
Palavras-chave: Phytohormone; Guadua chacoensis (Poaceae); Woody bamboo native; Atlantic forest biome; Bamboos; Micropropagation; Transmission electron microscopy; Plant physiology.
Ano: 2019
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103488

Influência de substâncias ativas da água de coco no metabolismo "In vitro" do sêmen caprino.
Provedor de dados: Acesso Livre à Informação Científica da Embrapa (Repositório Alice)
Autores: SALLES, M. G. F.; NUNES, J. F.
Tipo: Resumo em anais e proceedings
Palavras-chave: Fitohormonios; Phytohormone; Fitohormônio; Caprino; Água de Coco; Sêmen; Hormônio Vegetal; Goats; Coconut water; Plant hormones.
Ano: 1996
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/514474

Jasmonic acid and K-phosphite enhance productivity and technological quality of sugarcane crop.
Provedor de dados: Acesso Livre à Informação Científica da Embrapa (Repositório Alice)
Autores: MOREIRA, B. R. de A.; VIANA, R. da S.; LISBOA, L. A. M.; LOPES, P. R. M.; FIGUEIREDO, P. A. M.; RAMOS, S. B.; BONINI, C. S. B.; TRINDADE, V. D. R.; ANDRADE, M. G. de O.; MAY, A.
Abstract: Plant resistance inducers are cost-effective and environmentally pleasing strategies of plant protection to mitigate biotic and abiotic agents threatening food safety and energy security. We, accordingly, present jasmonic acid and k-phosphite as low-cost strategies to enhance productive yield and technological quality of sugarcane crop. Exogenously treatment of the sugarcane variety SP81-3250 consisted of carrying out foliar application of jasmonic acid at 1, 1.5 and 2 ml L-1 and K-phosphite at 2, 4 and 6 ml L-1 before crop flowering. Interestingly, both systemic phytorregulator and foliar fertilizer at the lowest doses significantly improved contents of total soluble solids and sucrose, as well as productive yield of fermentable sugars. Jasmonic...
Tipo: Artigo de periódico
Palavras-chave: Host self-defense system; Induced resistance technique; Jasmonate-methyl; Phytohormone; Plant-resistance elicitor; Saccharum sp; Cana de Açúcar; Regulador de Crescimento; Nutriente Mineral; Resistência; Sacarose; Sugarcane; Sugarcane juice; Sucrose; Sucrose-phosphate synthase; Jasmonic acid; Potassium phosphite; Induced resistance.
Ano: 2019
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1116047

Rooting of herbaceous minicuttings of diff erent cultivars of peach rootstocks under the eff ect of IBA.
Provedor de dados: Acesso Livre à Informação Científica da Embrapa (Repositório Alice)
Autores: TIMM, C. R. F.; SCHUCH, M. W.; TOMAZ, Z. F. P.; FISCHER, D. L. O.; MAYER, N. A.
Tipo: Artigo de periódico
Palavras-chave: Propagation; Minicutting; Phytohormone; Homogeinety.
Ano: 2015
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1057845

Effects of an Auxin and a brassinosteroid on physical, chemical and biochemical attributes of ‘Galaxy’ apples
Provedor de dados: Ciência Rural
Autores: Ramos,Ângela Preza; Zanardi,Aquidauana Miqueloto; Amarante,Cassandro Vidal Talamini do; Steffens,Cristiano André; Pereira-Netto,Adaucto Bellarmino.
ABSTRACT:  The aim of this study was to study the effect of the auxin naphthalene acetic acid (NAA) and the brassinosteroid 28-homocastasterone (28-HCS) applied every 15 days (harvest 2015/16) or every 21 days (harvest 2016/17) after full bloom, on the physical, chemical and biochemical attributes of the ‘Galaxy’ apples. The study was performed at a commercial orchard at Vacaria county, Rio Grande do Sul State, Brazil. The following treatments were applied: water (control), NAA (0.1%), 28-HCS (10‒6 M) and NAA (0.1%) + 28-HCS (10‒6 M). For this purpose, 300 μL of the plant growth regulator solutions were applied to the fruit peduncles. Fruits treated with NAA every 21 days presented higher starch-iodine index and lower total soluble solids (TSS), titratable...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malus domestica; Phytohormone; 28-homocastasterone (28-HCS); Naphthalene acetic acid.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000400202

Citocininas y protector para incrementar la calidad del botón floral en rosa de corte (Rosa x Hybrida).
Provedor de dados: Depósito Institucional Abierto de Documentos Digitales del Colegio de Postgraduados (COLPOS DIGITAL )
Autores: Jarquín Nieto, Ignacio Antonio.
El Estado de México tiene una de las principales zonas productoras de ornamentales, con 86% de la superficie total dedicada a la floricultura nacional, principalmente de rosa de corte (Rosa sp.) bajo condiciones de invernadero en el año 2007. Entre las principales limitantes en la producción y comercialización de rosas está la baja calidad de los botones florales. Para incrementar su calidad y sanidad, se evaluó en el municipio de Villa Guerrero el efecto de la aplicación de fitohormonas citocininas, además del Protector Floral CP® como barrera física en plantas de rosa Rosa x Hybrida “Polo” para corte, con dos años de establecimiento en invernadero. El diseño experimental fue completamente al azar con cuatro repeticiones. Se evaluaron tres formulaciones...
Palavras-chave: Fitohormona; Trips; Ornamentales; Phytohormone; Thrips; Ornamental; Entomología y Acarología; Doctorado.
Ano: 2013
URL: http://hdl.handle.net/10521/1971

Yield and quality of the Tetsukabuto squash fruits induced with 2,4-D doses under dry conditions
Provedor de dados: Horticultura Brasileira
Autores: Queiroga,Roberto CF; Silva,Gabriel D; Pereira,Auderlan M; Almeida,Ricardo RP; Silva,Ariano B.
ABSTRACT Squashes and pumpkins are known and grown worldwide, including the Tetsukabuto type, a hybrid of Japanese origin. On this work, we evaluated yield and quality of parthenocarpic fruits of hybrid Tetsukabuto developed with the use of 2,4-D doses, in the climatic conditions of the Brazilian semiarid, in the city of Pombal, state of Paraíba, Brazil. The experiment was carried out from February to May 2013, in complete blocks at random and five replications. Treatments corresponded to five 2,4-D doses (0, 90, 180, 270, and 360 mg/L) applied to female flowers, and a control treatment, where fruits developed out of insect pollinated flowers. We evaluated number of flowers per plant, duration of flowering, number of fruits per plant (used to estimate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucurbita maxima; Cucurbita moschata; Phytohormone; Physiology.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000200271

Ethylene and 1-methylcyclopropene action over senescence of nasturtium flowers
Provedor de dados: Horticultura Brasileira
Autores: Silva,Tania P; Finger,Fernando L.
ABSTRACT: This work describes ethylene and 1-methylcyclopropene (1-MCP) action on post-harvest shelf life of four development stages of nasturtium flowers. To reach this goal, we carried out three experiments. In the first and second experiments, we studied five ethylene (0; 0.1; 1; 10; 100 and 1000 μL/L) and three 1-MCP concentrations (0.25; 0.5 and 0.75 μL/L), respectively. In the third experiment, 1-MCP was followed by combined with ethylene (only 1-MCP; only ethylene; and 24 hours of exposure to 0.75 μL/L 1-MCP followed by 24 hours of exposure to 100 μL/L ethylene). All experiments had two control treatments, one keeping non-exposed flowers inside and another outside exposure chambers. Experiments were set in factorial design, in complete blocks at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tropaeolum majus; Phytohormone; Post-harvest; Phenological stages.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000400453