Abstract
The timber degradation and overexploitation of Tilia amurensis necessitate strategic genetic resource management. This study presents a comprehensive approach to plus-tree selection, focusing on growth evaluation. Drawing from the procedures developed for evergreen oak, it encompasses base population selection, criteria establishment, forest stand investigation, standardized measurements, and tree selection. This study advances the baseline selection methods by emphasizing growth differentiation through age and environmental adjustments. A total of 62 superior individuals were selected from 176 candidates across 20 populations, effectively expanding the geographical boundaries. This growth-centric improved approach offers practical insights for selective breeding and genetic conservation, and addresses the ecological characteristics of the species. This study underscores the need for further exploration of genetic differentiation and biological traits to provide a foundation for refining T. amurensis tree improvement programs. In a broader context, these findings contribute to the understanding and sustainable management of diverse broadleaf forests.
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