Comparative analysis of salt tolerance in five commercial <i>Prunus</i> rootstocks

Salt tolerance in Prunus rootstocks involves multiple, independent mechanisms including growth maintenance, ion selectivity and physiological stability. No single genotype exhibited universal superiority; instead, each employed distinct tolerance strategies with specific advantages. Rootpac R offers the most balanced performance for general saline conditions, while other genotypes may be preferred for specific situations: Rootpac 20 for short-term growth maintenance, Rootpac 40 for ion homeostasis priority or Garnem for mild stress conditions. These findings emphasize that rootstock selection must consider specific environmental conditions and production goals rather than relying on simple tolerance rankings. © 2025 Society of Chemical Industry.