Fig. 2

(a) Correlation matrix between agronomic traits of Salvia sclarea. *, **, *** indicates significant at P = 0.05, P = 0.01 and P = 0.001, respectively ‘ns’ indicates not significant at P = 0.05. (b): Correlation matrix between 12 major compounds of essential oil of Salvia sclarea. *, **, *** indicates significant at P = 0.05, P = 0.01 and P = 0.001, respectively ‘ns’ indicates not significant at P = 0.05.