Consulta: creatorFacets:"Romero,Hernán Mauricio"
Registros recuperados: 4
Data/hora: 10/06/2024 08:21:24

Phenology of the oil palm interspecific hybrid Elaeis oleifera × Elaeis guineensis
Provedor de dados: 63
Autores: Hormaza,Paola; Fuquen,Eloina Mesa; Romero,Hernán Mauricio.
Oil palm is one of the most important oil crops in the world. Because of its high productivity and perennial nature, it has been expanding quickly. Commercial plantations consist mostly of the African palm E. guineensis Jacq. However, producers in Latin America are increasingly planting the O × G interspecific hybrid, a cross between African palm (E. guineensis) and the American palm (E. oleifera (Kunth) Cortés). This interspecific hybrid has emerged as a promising solution to diseases such as the bud rot of oil palm because of the apparent partial resistance of this genotype to the disease. This work studied and described the phenology of the O × G interspecific hybrid. The phenology stages were coded using the BBCH scale. The scale for the phenophases...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: BBCH scale; Degree-days; Phenophase.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000400007

Chlorophyll a fluorescence and leaf temperature are early indicators of oil palm diseases
Provedor de dados: 63
Autores: Aucique-Perez,Carlos Eduardo; Daza,Edison Steve; Ávila-Diazgranados,Rodrigo Andrés; Romero,Hernán Mauricio.
ABSTRACT Bud rot (BR) caused by Phytophthora palmivora and lethal wilt (LW) whose causal agent is unknown, are two diseases currently posing a threat to the oil palm ( Elaeis guineensis . Jacq) industry. BR, first reported in 1964, has destroyed more than 85,000 ha. LW, first reported in 1994 in the Llanos Orientales in Colombia, has destroyed more than 5,000 ha. Chlorophyll a fluorescence is useful as a provider of information about the efficiency of the photosynthetic process when plants are subjected to biotic or abiotic stresses. Oil palms affected by BR and LW showed anomalies in the photosynthetic system, manifested by reductions in Fv / F  M and ΦPSII. Changes in ΦPSII, variable fluorescence yield ( Fv ) and maximum fluorescence in light-adapted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Photosystem II; PSII quantum efficiency; Plant-Pathogen Interaction; Severity.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000201201

CONTENIDO DE POLIAMINAS LIBRES EN PALMAS AFECTADAS POR PUDRICION DEL COGOLLO EN LAS ZONAS CENTRAL Y OCCIDENTAL DE COLOMBIA
Provedor de dados: 37
Autores: Correa,Viviana; Prada,Fausto; Romero,Hernán Mauricio.
La pudrición del cogollo (PC) es la principal enfermedad de la palma en Colombia. En las zonas palmeras Central (ZC) y Oriental (ZOR), las palmas enfermas pueden recuperarse naturalmente. En la Zona Occidental (ZOCC) el proceso de recuperación no es evidente. La recuperación de palmas está ligada a gran actividad meristemática que podría involucrar la acción de metabolitos como las poliaminas (PA). Este trabajo muestra la relación entre el contenido de poliaminas en el meristemo y la capacidad de recuperación de palmas con PC, en dos zonas agroclimáticas diferentes. Poliaminas extraídas del meristemo de palmas en ZC y ZOCC, fueron analizadas por HPLC. En ZC, donde existe recuperación espontánea, los niveles más altos de PA se presentan en palmas sanas y en...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Elaeis guineensis; Putrescina; Espermidina; Espermina; Actividad meristemática; Especies reactivas de oxígeno.
Ano: 2010
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2010000100011

Physiological response of oil palm interspecific hybrids (Elaeis oleifera H.B.K. Cortes versus Elaeis guineensis Jacq.) to water deficit
Provedor de dados: 61
Autores: Méndez,Yurany Dayanna Rivera; Chacón,Leonardo Moreno; Bayona,Cristihian Jarry; Romero,Hernán Mauricio.
Water supply is the main yield-limiting abiotic factor of oil palm in Colombia. To determine the effect of water deficit on the physiology of oil palm and to assess the tolerance degree to this condition, interspecific Elaeis oleifera versus Elaeis guineensis 'U1273', 'U1859', 'U1914', and 'U1937' hybrids were planted for 60 days in soil with different water potentials (-0.042, -0.5, -1.0, and -2.0 MPa) in a complete randomized factorial design with three replications. The water potential, osmotic adjustment molecules (total and reducing sugar content), gas exchange (photosynthesis rate, stomatal conductance, water use efficiency, and leaf respiration), and vegetative growth (height, bulb diameter, leaf area, number of leaves, total dry matter, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ecophysiology; Growth; Stress; Tolerance; Water potential.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202012000400006