title: Chemical diversity of the natural populations of Dalmatian pyrethrum (Tanacetum cinerariifolium (TREVIR.) SCH.BIP.) in Croatia.
abstract: Dalmatian pyrethrum (Tanacetum cinerariifolium (TREVIR.) SCH.BIP.) is a plant species endemic to the east Adriatic coast. The bioactive substance of Dalmatian pyrethrum is a natural insecticide, pyrethrin, a mixture of six active components (pyrethrins I and II, cinerins I and II, and jasmolins I and II). The insecticidal potential of pyrethrin was recognized decades ago, and dried and ground flowers have traditionally been used in Croatian agriculture and households. A total of 25 Dalmatian pyrethrum populations from Croatia were studied to determine the pyrethrin content and composition, and to identify distinct chemotypes. The total pyrethrin content ranged from 0.36 to 1.30% (dry flower weight; DW) and the pyrethrin I/pyrethrin II ratio ranged from 0.64 to 3.33%. The statistical analyses revealed that the correlations between the percentage of pyrethrin I and of all the other components were significant and negative. The total pyrethrin content was positively correlated with the percentage of pyrethrin I and negatively correlated with cinerin II. The multivariate analysis of the chemical variability enabled the identification of five chemotypes among 25 Dalmatian pyrethrum populations. The chemical characterization of indigenous Dalmatian pyrethrum populations may serve as a good background for future breeding and agricultural exploitation.
authors.affiliation: Department of Seed Science and Technology, Faculty of Agriculture, University of Zagreb, Svetošimunska 25, HR-10000 Zagreb, Croatia. mgrdisa@agr.hr
authors.forename: Martina
authors.initials: M
authors.lastname: Grdiša
authors.forename: Sandra
authors.initials: S
authors.lastname: Babić
authors.forename: Martina
authors.initials: M
authors.lastname: Periša
authors.forename: Klaudija
authors.initials: K
authors.lastname: Carović-Stanko
authors.forename: Ivan
authors.initials: I
authors.lastname: Kolak
authors.forename: Zlatko
authors.initials: Z
authors.lastname: Liber
authors.forename: Marija
authors.initials: M
authors.lastname: Jug-Dujaković
authors.forename: Zlatko
authors.initials: Z
authors.lastname: Satovic
mesh_terms: D011723:Chrysanthemum cinerariifolium / Q000737:chemistry*; D016000:Cluster Analysis; D017523:Croatia; D035264:Flowers / Q000737:chemistry; D007306:Insecticides / Q000737:chemistry* / Q000302:isolation & purification; D025341:Principal Component Analysis; D011722:Pyrethrins / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D007306:Insecticides; D011722:Pyrethrins