Fig. 6. Relationship between relative water content (RWC) and photosynthesis rate (P_n) levels at midday in dwarf sea-lavender (L. pectinatum) plants under control (P_n = 0.07RWC - 1.68; r² = 0.94, significant at the 0.001 probability level [***]), S1 (P_n = 0.13RWC - 7.6; r² = 0.92***), S2 (P_n = 0.11RWC - 6.0; r² = 0.94***), and S3 treatments (P_n = 0.06RWC - 1.52; r² = 0.95***) during the experimental period.