Figure 1From: Essential oil variation in wild populations of Artemisia saharae (Asteraceae) from Tunisia: chemical composition, antibacterial and antioxidant propertiesLinear discriminant analysis (LDA) for the essential oil compounds of altitudinal A. herba-alba populations. The average contents of the essential oil compounds were projected onto the first two principal axes (+ and - indicate positive and negative correlations with the axes, respectively). Coding numbers of altitudinal populations: see Table 1.Back to article page