Figure 2

Box plots (a–c) represent the data distribution range of biomass (BM), extractable compound (EC), specific gravity (SA) and variation between experimental sets. Correlation matrix (d) represents the correlation between parameters [Colour scale bar at right representing correlation from negative (− 1) to positive (+ 1). Significance stars representing significance level of correlation (*p < 0.05, **p < 0.01, ***p < 0.001)].