a positive trendp = 0.076
1,8-cineole exhibited a significant negative correlation with IC50 ( r = −0.639, p = 0.047) and a positive trend with FRAP ( r = 0.584, p = 0.076), indicating enhanced antioxidant efficacy in high-content ecotypes (e.g., TP5: 19.28%, IC50 2.80 μg/mL, FRAP 549.875 μM Fe 2+ /g; TP9: 20%, IC50 2.86 μg/mL, FRAP 548.156 μM Fe 2+ /g).