Comparative investigation of 11 Achillea collina Becker accessions concerning phenological, morphological, productional features and active agent content

Eleven Achillea collina Becker accessions of different origin were tested in open field plots during three years for their phenological, morphological, productional features and active material content in Budapest, Hungary. Among the tested plant materials European selected cultivars, Hungarian cultivated stocks and populations from wild growing habitats were investigated. Concerning flowering time, two types (early and late) were distinguished. Flowering time of the less abundant late type, represented by Hungarian variety ‘Azulenka’ and ‘Gb22’, started approximately 2 weeks later than that of the early flowering type. Plant height and length of flowering horizon varied only slightly among taxa, and increased after the first year of cultivation. The proportion of useful plant organs in the drug was stable. Biomass and drug production of the investigated genotypes was variable, late flowering types providing higher yields. Essential oil, proazulene, total phenolic and flavonoid content varied on a large scale among accessions and years. Results demonstrate the high intraspecific variability of A. collina and also the role of valuable genotypes in drug production. Selected cultivars may provide stable and good yields and drug quality under particular environmental conditions, while genotypes of wild origin may be valuable sources of future breeding programs.