Consulta: subjectFacets:"Eucalyptus globulus"
Registros recuperados: 9
Data/hora: 13/06/2024 08:01:29

RAPD and freezing resistance in Eucalyptus globulus
Provedor de dados: 69
Autores: Fernández R.,Marta; Valenzuela A.,Sofía; Balocchi L.,Claudio.
Eucalyptus globulus is the second most important forest species in Chile, after Pinus radiata. The main advantages of E. globulus are its fast growth (25 m³/ha/year) and its excellent wood quality for kraft pulp production. On the negative side, its low freezing tolerance has been an obstacle for the expansion of plantations, specifically on the foothills of the Andes. The difference in the freezing resistance between clones of E. globulus has a genetic base and, therefore, it could be detected through DNA molecular markers. Fifteen clones of E. globulus, eight classified as freezing resistant and seven as freezing sensitive were analyzed using the technique of RAPD, in order to obtain molecular markers that could differentiate between freezing sensitive...
Tipo: Journal article
Palavras-chave: Eucalyptus globulus; Freezing resistance; Molecular markers; RAPD.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000300025

Evaluation of essential oils in health and physiological quality of Schinus molle seeds and seedlings
Provedor de dados: 190
Autores: Pereira, Kamila Cardoso; Reda, Fernanda Rocha; Piveta, Graziela; Garcia, Flávio Augusto de Oliveira.
The objective was to evaluate the effect of Mentha piperita, Cymbopogon nardus and Eucalyptus globules essential oils, in sanitary and physiological quality of Schinus molle L. seeds and seedlings. The seeds were treated with essential oils at concentrations of 10%, on 1 μL g-1, 20%, on 2 μL g-1, 30% , on 3 μL g-1 and control. After treatments, seeds were evaluated by sanity test, using filter paper method (“blotter test”) and by germination test, where the seeds were placed between vermiculite substrate. For counts, sprouted and dead seeds were considered. Shoot length, root, total height and stem diameter were measured for seedlings evaluation. The use of citronella and mint essential oils reduced the incidence of different pathogens in S. molle seeds....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mentha piperita; Cymbopogon nardus; Eucalyptus globulus Recursos Florestais; Engenharia Florestal; Patologia Florestal; Mentha piperita; Cymbopogon nardus; Eucalyptus globulus.
Ano: 2016
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/905

Basic density and pulp yield relationship with some chemical parameters in eucalyptus trees
Provedor de dados: 86
Autores: Seca,Ana Maria Loureiro da; Domingues,Fernando Manoel de Jesus.
The objective of this work was to evaluate the use of basic density and pulp yield correlations with some chemical parameters, in order to differentiate an homogeneous eucalyptus tree population, in terms of its potential for pulp production or some other technological applications. Basic density and kraft pulp yield were determined for 120 Eucalyptus globulus trees, and the values were plotted as frequency distributions. Homogenized samples from the first and fourth density quartiles and first and fourth yield quartiles were submitted to total phenols, total sugars and methoxyl group analysis. Syringyl/guaiacyl (S/G) and syringaldehyde/vanillin (S/V) ratios were determined on the kraft lignins from wood of the same quartiles. The results show the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus globulus; Syringyl; Guaiacyl; Phenols; Methoxyl group; Kraft pulping.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006001200001

Insecticidal activity of essential oil from Eucalyptus globulus against Aphis nerii (Boyer) and Gynaikothrips ficorum (Marchal)
Provedor de dados: 114
Autores: Russo,S; Yaber Grass,M. A; Fontana,H. C; Leonelli,E.
Aphids and thrips are very important pest species of many greenhouse and field plants in the world. In recent years, there have been attempts to identify plants for their insecticidal property with a view to find out suitable alternatives to the indiscriminate use of chemical pesticides, which are a risk for human health and the environment. The aim of this work was to evaluate the insecticidal effect of Eucalyptus globulus Labill essential oil (EO) against Aphis nerll Boyer de Fonscolombe (Hemiptera: Aphididae) and Gynaikothrips ficorum Marchal (Thysanoptera: Ploeothridae). The EO was extracted by hydrodistillation and the bioassay was evaluated by toxicity contact method, using solutions at different concentrations and for different time intervals. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Secondary metabolites; Thrips; Aphids; Eucalyptus globulus.
Ano: 2018
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1668-298X2018000100007

Dinámica de brotación y densidad básica de la madera en rebrotes de tres especies dendroenergéticas
Provedor de dados: 115
Autores: Ríos-Saucedo,Julio C.; Acuña-Carmona,Eduardo; Cancino-Cancino,Jorge; Rubilar-Pons,Rafael; Corral-Rivas,José J.; Rosales-Serna,Rigoberto.
Resumen La dinámica de brotación y la densidad básica son importantes en el manejo de especies para producción de biomasa con fines energéticos. Nuestro objetivo fue estudiar la dinámica de brotación y la densidad básica en Eucalyptus globulus Labill, E. denticulata Cook &amp; Ladiges y Acacia dealbata Link con tres densidades de plantación (5000, 10 000 y 15 000 árboles ha-1). El estudio se realizó en la región del Biobío, Chile, en tres fechas de evaluación (10, 21 y 31 meses después del corte; DC). A los 10 meses A. dealbata presentó el número mayor de rebrotes proventicios (5 a 19) en las tres densidades y luego el número disminuyó (4 a 7) a los 21 y 31 meses DC en 10 000 y 15 000 árboles ha-1. Eucalyptus denticulata y E. globulus mostraron de tres a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus globulus; Eucalyptus denticulata; Acacia dealbata; Cultivos leñosos; Monte bajo; Dendroenergía.
Ano: 2017
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000200215

Influencia de seis especies arbóreas en la infiltración de agua en el suelo
Provedor de dados: 115
Autores: Zapata-Sierra,Antonio; Manzano-Agugliaro,Francisco.
Los modelos de infiltración de agua en el suelo que dependen de una medida o dato puntual, como los de Kostiakov, Philips, Horton, y Green y Ampt, no consideran la influencia de los árboles circundantes. La hipótesis planteada en este trabajo fue que ésta puede influir en los valores genéricos tomados en campo y, por tanto, deben corregirse. Los factores que pueden influir son: la especie arbórea, la distancia al tronco, la altura del árbol y su manejo (cultivado o no). La infiltración fue medida con un infiltrómetro de doble anillo a varias distancias del tronco para tres especies de árboles cultivados con riego: Citrus sinensis, Citrus limon, Olea europaea y otras tres forestales: Eucalyptus globulus, Pinus halepensis, y Tamarix canariensis, así como...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus limon; Citrus sinensis; Eucalyptus globulus; Olea europaea; Pinus halepensis; Tamarix canariensis; Zoysia spp.
Ano: 2008
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952008000700010

Producción de pasto Rhodes en una plantación de eucalipto
Provedor de dados: 115
Autores: Guevara-Escobar,Aurelio; Cervantes-Jiménez,Mónica; Suzán-Azpiri,Humberto; González-Sosa,Enrique; Saavedra,Israel.
El forraje de gramíneas es importante para la sostenibilidad a corto plazo de los sistemas agroforestales. Para conocer las relaciones de competencia se estudió la tasa de crecimiento (TC) y la acumulación de materia seca (AMS) del pasto estableciendo: 1) la disminución por efecto de la sombra y 2) la relación con variables ambientales, en una plantación de eucalipto (eucalyptus globulus Labill.) con 950 árboles ha-1 y asociado a un pastizal de Chloris gayana Kunth (pasto Rhodes), del 2007 al 2009. La plantación de eucalipto (PE) se comparó con el campo abierto dominado por Rhodes (CA) en Zapopan, Jalisco, México, durante un año. En PE la temperatura mínima promedio fue mayor en relación a CA; la humedad del suelo en los estratos superficiales y la...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chloris gayana; Eucalyptus globulus; Plantaciones comerciales; Tasa de crecimiento.
Ano: 2012
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952012000200007

Susceptibility of Eucafyptus spp. to an induced infestation of red gum lerp psyllid Glycaspis brimblecombei Moore (Hemiptera: Psyllidae) in Santiago, Chile
Provedor de dados: 118
Autores: Huerta,Amanda; Faúndez,Miguel; Araya,Jaime E.
To determine the susceptibility of important species of eucalypt trees in Chile to Glycaspis brimblecombei Moore (Hemiptera: Psyllidae), an insect that was detected on Eucafyptus camaldulensis Dehn. in 2002 in Santiago, which causes defoliation of trees affected, and even their death in severe infestations, a field evaluation of an induced infestation was performed in 2004 of one-year-old plants of E. camaldulensis, E. nitens Deane &amp;amp; Maiden, and E. globulus Labill Growths of infested plants were compared with uninfested controls, using destructive sampling at 15, 30, 45, and 60 days. Also, observations were made regarding the duration of the development stages of the insect during two generations. The only species that was susceptible to the...
Tipo: Journal article
Palavras-chave: Eucalyptus camaldulensis; Eucalyptus globulus; Eucalyptus nitens; Glycaspis brimblecombei; Red gum lerp psyllid.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000200003

Influence of water regime on initial growth and essential oil of Eucalyptus globulus
Provedor de dados: 65
Autores: Queiroz,Túlio Barroso; Pereira,Nayara Natacha de Jesus; Silva,Júlio Cesar Rodrigues Lopes; Fonseca,Francine Souza Alves da; Martins,Ernane Ronie.
ABSTRACT: Understanding the water requirement of forest species in the seedling stage supports cost reduction by eliminating unnecessary irrigation in addition to providing higher productivity. This study was carried out to evaluate the effect of the water regime on initial growth, leaf production and content and chemical composition of the essential oil of Eucalyptus globulus , during the first 120 days of cultivation. The experiment employed a completely randomized design and was carried out at the Instituto de Ciências Agrárias da Universidade Federal de Minas Gerais (ICA/UFMG), Montes Claros, MG. Treatments consisted of six different water regimes (50%, 75%, 100%, 125%, 150% and 175% of the reference evapotranspiration - ETo) with four replicates....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus; Irrigation; Water stress; Eucalyptus globulus.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000300301