Genotype and Nitrogen Source Influence Drought Stress Response in Oil Palm Seedlings
| dc.creator | Ruiz-Romero, Rodrigo | |
| dc.creator | Peña, Marlon de la | |
| dc.creator | Ayala-Díaz, Iván Mauricio | |
| dc.creator | Montoya, Carmenza | |
| dc.creator | Romero, Hernán Mauricio | |
| dc.date | 2026-01-30 | |
| dc.date.accessioned | 2026-06-05T16:59:48Z | |
| dc.description | As a significant global source of vegetable oil, the oil palm’s ability to withstand abiotic stresses, particularly drought, is crucial for sustainable agriculture. This is especially significant in tropical regions, where water scarcity is becoming more common. Nitrogen, a vital nutrient, plays an essential role in various physiological and biochemical processes in plants, directly influencing growth and stress tolerance. This study investigates the interaction between nitrogen sources (ammonium vs. nitrate) and drought stress in oil palm (Elaeis guineensis) seedlings, which is critical in enhancing productivity in this economically important crop. The experiment evaluated five commercial oil palm genotypes, which were supplied with nitrogen solutions (15 mM NH4+ or NO₃-) for 46 days, followed by 30 days of progressive drought. The results showed that drought conditions universally reduced the biomass, with ammonium-fed plants exhibiting greater shoot biomass sensitivity than nitrate-fed plants. Drought also significantly decreased the chlorophyll a, PhiPS2, and root-reducing sugar levels—critical indicators of photosynthetic efficiency and overall plant health. The effects on the root architecture were complex, with ammonium nutrition differentially influencing the lateral root length under well-watered versus drought conditions, highlighting nitrogen forms’ nuanced role in root development. Importantly, substantial genotypic variability was observed in most traits, affecting the responses to both the nitrogen source and drought stress. This variability suggests that certain genotypes may be better suited to cultivation in specific environmental conditions, particularly drought-prone areas. | en-US |
| dc.description | Como uno de los principales cultivos productores de aceite vegetal a nivel mundial, la palma de aceite debe contar con una alta capacidad para tolerar el estrés abiótico, especialmente la sequía, a fin de garantizar una producción sostenible. Esto es especialmente significativo en regiones tropicales, donde la escasez de agua es cada vez más común. El nitrógeno, un nutriente esencial, desempeña un papel fundamental en diversos procesos fisiológicos y bioquímicos de las plantas, razón por la cual influye directamente en el crecimiento y la tolerancia al estrés. Este estudio investiga la interacción entre las fuentes de nitrógeno (amonio vs. nitrato) y el estrés por sequía en plántulas de palma de aceite (Elaeis guineensis), lo cual es crítico para mejorar la productividad de este cultivo de importancia económica. El experimento evaluó cinco genotipos comerciales de palma de aceite, a los cuales se les suministraron soluciones de nitrógeno (15 mM NH4+ o NO₃-) durante 46 días, seguidos de 30 días de sequía progresiva. Los resultados mostraron que las condiciones de sequía redujeron de forma generalizada la biomasa y que las plantas nutridas con amonio presentaron una mayor sensibilidad en la biomasa aérea que las alimentadas con nitrato. La sequía también disminuyo significativamente los niveles de clorofila de tipo a, PhiPS2 y azucares reductores de las raíces, los cuales son indicadores clave de la eficiencia fotosintética y la sanidad general de las plantas. | es-ES |
| dc.format | application/pdf | |
| dc.format | text/xml | |
| dc.identifier.uri | https://repositorio.fedepalma.org/handle/123456789/158315 | |
| dc.identifier.url | https://publicaciones.fedepalma.org/index.php/palmas/article/view/14494 | |
| dc.language | spa | |
| dc.publisher | Cenipalma | es-ES |
| dc.relation | https://publicaciones.fedepalma.org/index.php/palmas/article/view/14494/14409 | |
| dc.relation | https://publicaciones.fedepalma.org/index.php/palmas/article/view/14494/14424 | |
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| dc.rights | Derechos de autor 2026 Palmas | es-ES |
| dc.rights | https://creativecommons.org/licenses/by-nc-nd/4.0 | es-ES |
| dc.source | Palmas; Vol. 46 Núm. 3 (2025): Palmas; 7-27 | es-ES |
| dc.source | 2744-8266 | |
| dc.subject | Amonio | es-ES |
| dc.subject | déficit hídrico | es-ES |
| dc.subject | nitrato | es-ES |
| dc.subject | rendimiento de las plantas | es-ES |
| dc.subject | ammonium | en-US |
| dc.subject | nitrate | en-US |
| dc.subject | plant performance | en-US |
| dc.subject | water deficit | en-US |
| dc.title | Genotype and Nitrogen Source Influence Drought Stress Response in Oil Palm Seedlings | en-US |
| dc.title | El genotipo y la fuente de nitrógeno influyen en la respuesta al estrés por sequía en plántulas de palma de aceite | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion |