Rejuvenation of date palm (Phoenix dactylifera l.) through aerial root induction in high trunk sections

Resumen

Objective: This study aimed to evaluate the feasibility of rejuvenating mature date palms (Phoenix dactylifera L.) by inducing adventitious roots on elevated trunk sections and to synthesize the underlying physiological and agronomic principles that support this technique.

Design/Methodology/Approach: A structured literature review was conducted using the Scopus, Web of Science, SpringerLink, ScienceDirect, Wiley Online Library, and FAO databases. Search criteria focused on adventitious root biology, wound induced hormonal signaling, tissue plasticity, vegetative propagation, and documented cases of aerial rooting in date palm. The evidence was integrated to develop a conceptual field-based protocol for aerial root induction, detachment, and transplantation.

Results: Published studies demonstrate that date palm tissues retain substantial regenerative capacity when exposed to auxin stimulation, controlled wounding, adequate humidity, and moderate aeration. Research on the rooting of elevated offshoots confirms the species’ ability to form functional adventitious roots beyond basal regions. These findings support the technical viability of inducing a new root system on elevated trunk sections.

Limitations/Implications:  This review relies solely on published studies; no field-based experiments were conducted. The adoption of the technique may vary among cultivars and environmental conditions, particularly in arid regions subject to salinity and temperature extremes.

Findings/Conclusions: Aerial root induction represents a viable rejuvenation strategy for tall, aging date palms, allowing physiological renewal while maintaining genetic identity. This approach integrates well-established principles of adventitious root formation with practical field management, offering strong potential for orchard renovation and the conservation of high value cultivars.