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Concentrations of the monoterpenes (A), sesquiterpenes (B), diterpene (C), and total terpenoids (D) in root extracts of 12 cultivars of C. morifolium. CmR1–12 refer to the cultivar codes in Table 1. Different letters in (A–D) denote statistically significant differences among the means according to ANOVA analysis (p < 0.05).
