scholarly journals Estimation of transpiration in oil palm (Elaeis guineensis Jacq.) with the heat ratio method

2016 ◽  
Vol 34 (2) ◽  
pp. 172-178 ◽  
Author(s):  
Cristihian Jarri Bayona-Rodríguez ◽  
Hernán Mauricio Romero
Keyword(s):  
Oil Palm ◽  
Sap Flow ◽  
Elaeis Guineensis ◽  
Weather Conditions ◽  
Ratio Method ◽  
Flow Rates ◽  
Young Leaves ◽  
Elaeis Guineensis Jacq ◽  
Xylem Water Flow ◽  
Heat Ratio Method

Sap flow sensors were installed on the leaf petioles of 5-year-old oil palms (Elaeis guineensis Jacq.) to measure the xylem water flow for 12 days based on the heat ratio method (HRM). It was found that young leaves have higher sap flow rates, reaching values of over 250 cm3 h-1, and that sap flow fluctuations are directly related to weather conditions, particularly the vapor pressure deficit (VPD) component. It was observed that the sap flow rates remained constant and very close to 0 cm3 h-1 between 18:00 and 6:00 h and that the upward and downward movement of sap was faster during the day, with peak levels between 9:00 and 16:00 h. Under the evaluation conditions, the oil palm crop transpiration was estimated to be 1.15 mm H2O/ha-day. The HRM is a highly repeatable method and an useful tool to quantify the total oil palm transpiration. It could potentially be applied to irrigation.

scholarly journals Fusarium spp. associated with bud rot of oil palm (Elaeis guineensis Jacq.) in Ecuador.

1969 ◽  
Vol 97 (3-4) ◽  
pp. 135-148
Author(s):  
Mayra Ronquillo-Narváez ◽  
Consuelo Estévez de Jensen ◽  
Gustavo Bernal
Keyword(s):  
Fusarium Oxysporum ◽  
Oil Palm ◽  
Dna Analysis ◽  
Elaeis Guineensis ◽  
Flag Leaf ◽  
Morphological Characteristics ◽  
Fusarium Spp ◽  
Young Leaves ◽  
Elaeis Guineensis Jacq ◽  
Rot Disease

Bud rot is considered the most important disease of oil palm (Elaeis guineensis Jacq.) in Panamá, Colombia, Ecuador and Brazil. This disease is characterized by yellowing of young leaves and rot of the flag leaf progressing to the meristematic tissues causing palm death. With the objective of studying bud rot etiology, a survey was conducted during June 2011 in seven different oil palm plantations of the province of Esmeraldas, Ecuador. Sampling was carried out in seven palm plantations and Fusarium spp. were isolated from buds, leaves, meristem tips and roots. Fungal identification was achieved by examination of morphological characteristics and DNA analysis by polymerase chain reaction (PCR). Pathogenicity tests were performed and Koch Postulates were completed with each isolate at the Research Center for Oil Palm in Ecuador. Two-month-old oil palm plants were used for the experiment: CIRAD code 2505 and the hybrids O x G (E. oleifera x E. guineensis), considered susceptible and tolerant cultivars, respectively. The palms were inoculated with 1 ml of 1 x 107 macroconidia per milliliter of Fusarium sp., F. oxysporum and F. solani. Control palms were inoculated with 1 ml of sterile distilled water. After four days of inoculation with F. oxysporum and F. solani, necrotic lesions appeared on the youngest leaves; after twenty-seven days bud rot progressed on the CIRAD code 2504 palms. Fusarium oxysporum and F. solani were re-isolated and identified through cultural characterization and PCR. Fusarium oxysporum and F. solani were found associated with bud rot disease in Ecuador and can be important in the development of the disease.

The chitinase activity of oil palm (Elaeis guineensis Jacq.) roots against fungal endophytes and pathogenic Ganoderma boninense

Plant Omics ◽  
2017 ◽  
Vol 10 (05) ◽  
pp. 247-251 ◽  
Author(s):  
Yurnaliza ◽  
◽  
Rizkita Rachmi Esyanti ◽  
Agus Susanto ◽  
I Nyoman Pugeg Aryantha ◽  
...  
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Fungal Endophytes ◽  
Chitinase Activity ◽  
Ganoderma Boninense ◽  
Elaeis Guineensis Jacq

scholarly journals Genetic diversity in oil palm (Elaeis guineensis Jacq) using RAM (Random Amplified Microsatellites)

Bragantia ◽  
2018 ◽  
Vol 77 (4) ◽  
pp. 546-556
Author(s):  
Christian Camilo Castañeda Cardona ◽  
Yacenia Morillo Coronado ◽  
Ana Cruz Morillo Conronado ◽  
Iván Ochoa
Keyword(s):  
Genetic Diversity ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Elaeis Guineensis Jacq

Quantitative trait loci for yield components in oil palm (Elaeis guineensis Jacq.)

2001 ◽  
Vol 103 (8) ◽  
pp. 1302-1310 ◽  
Author(s):  
K. A. Rance ◽  
S. Mayes ◽  
Z. Price ◽  
P. L. Jack ◽  
R. H. V. Corley
Keyword(s):  
Quantitative Trait Loci ◽  
Oil Palm ◽  
Quantitative Trait ◽  
Yield Components ◽  
Elaeis Guineensis ◽  
Trait Loci ◽  
Elaeis Guineensis Jacq

scholarly journals Accelerated in vitro propagation of elite oil palm genotypes (Elaeis guineensis Jacq.) by substituting cytokinin with putrescine

2016 ◽  
Vol 15 (50) ◽  
pp. 2767-2775 ◽  
Author(s):  
Roseli Correa Thais ◽  
Yoshimitsu Motoike Sérgio ◽  
Paula de Souza Andrade Ana ◽  
Morra Coser Sara ◽  
Queiroz Vanessa ◽  
...  
Keyword(s):  
Oil Palm ◽  
In Vitro Propagation ◽  
Elaeis Guineensis ◽  
Elaeis Guineensis Jacq

scholarly journals Genetic determinism of oil acidity among some DELI oil palm (Elaeis guineensis Jacq.) progenies

2016 ◽  
Vol 15 (34) ◽  
pp. 1841-1845 ◽  
Author(s):  
Constant LIKENG-LI-NGUE Benoit ◽  
Martin BELL Joseph ◽  
Franck NGANDO-EBONGUE Georges ◽  
Ntsefong NTSOMBOH Godswill ◽  
Bille NGALLE Hermine
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Genetic Determinism ◽  
Elaeis Guineensis Jacq

scholarly journals Physicochemical characterization of bunches from American oil palm (Elaeis oleifera H.B.K. Cortes) and their hybrids with African oil palm (Elaeis guineensis Jacq.)

2018 ◽  
Vol 67 (1) ◽  
pp. 170-178 ◽  
Author(s):  
Gabriel Chaves ◽  
Gustavo Adolfo Ligarreto- Moreno ◽  
Daniel Gerardo Cayon-Salinas
Keyword(s):  
Oil Palm ◽  
Elaeis Guineensis ◽  
Physicochemical Characterization ◽  
Elaeis Oleifera ◽  
Elaeis Guineensis Jacq ◽  
African Oil Palm

El objetivo de este estudio fue realizar un análisis comparativo de las características físicas y químicas de racimos de genotipos de Elaeis oleifera y de sus híbridos interespecíficos OxG con Elaeis guineensis, determinando los componentes y el potencial del aceite del racimo, y la calidad de los aceites, analizando el contenido de ácidos grasos, vitamina E y carotenos. En el estudio se utilizaron racimos provenientes de inflorescencias sin polinización asistida con la presencia perimetral de E. guineensis. Se utilizó un diseño experimental completamente al azar con tres unidades experimentales, cada una conformada por tres racimos. Los mayores cuajados del fruto se encontraron en el genotipo de E. oleifera Sinú (76,53 %) y el híbrido OxG II (72,64 %). Los potenciales de extracción de aceite fueron superiores en los materiales híbridos OxG destacándose el II (20,82 %). Las palmas E. oleifera presentaron mejores perfiles de ácidos grasos, destacándose los materiales del genotipo Sinú (79,1 % de ácidos grasos insaturados) y los del híbrido II (70,2 %). Para el contenido de vitamina E se confirmó la alta calidad del aceite de los materiales de E. oleifera, sobresaliendo el genotipo Coarí (1.006,7 ppm) y el híbrido II (1.549,6 ppm); el material del genotipo Sinú registró el mayor contenido de carotenos totales (1.524,7 ppm).

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