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Résumé :
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The wild Achillea millefolium L. with white, pink and deep pink flowers were collected from the same locality. Essential oils were produced by hydrodistillation and analyzed by GC and GC/MS. The main constituents of the inflorescence oils were β-pinene (13.1–19.3%), (E)-nerolidol (7.0–16.1%), piperitone (10.8%, deep pink inflorescences), β-eudesmol (8.4%, white), β-caryophyllene (6.7%, pink) and these of leaf oils—β-eudesmol (12.8%, white flowering plant), borneol (10.7%, pink), piperitone (10.0%, deep pink), caryophyllene oxide (6.4–10.4%), selin-11-en-4a-ol (6.5–7.5%) and spathulenol (6.1%, pink). The amounts of β-pinene decreased and (E)-nerolidol increased in the inflorescence oils with intensity of yarrow fl owers color. The inflorescences with different colored flowers produced markedly higher amounts of sabinene, β-pinene, 1,8-cineole, γ-terpinene, β-caryophyllene, α-humulene and (E)-nerolidol than leaves. The above correlation was identified for mono- and sesquiterpene hydrocarbons. An opposite correlation was determined for spathulenol, caryophyllene oxide, β-eudesmol, selin-11-en-4α-ol and oxygenated sesquiterpenes. Fifty-two identified compounds made up 93.0–96.6% of the inflorescence oils and 69.2–74.1% of leaf oils.
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