title: Correlations between Polyacetylene Concentrations in Carrot (Daucus carota L.) and Various Soil Parameters.
abstract: This study assessed the concentrations of three falcarinol-type polyacetylenes (falcarinol, falcarindiol, falcarindiol-3-acetate) in carrots and the correlations between these and different soil traits. A total of 144 carrot samples, from three different harvests taken a single season, were analysed in terms of their polyacetylene concentrations and root development. On one of the harvesting occasions, 48 soil samples were also taken and analysed. The chemical composition of the soil was found to influence the concentrations of falcarinol-type polyacetylenes in carrots. When the total soil potassium level was 200 mg/100 g soil, the concentration of falcarindiol (FaDOH) in the carrot samples was 630 μg/g DW, but when carrots were grown in soil with a total potassium level of 300 mg/100 g soil, the FaDOH concentration in the carrots fell to 445 μg/g DW. Carrots grown in soils generally low in available phosphorus exhibited higher levels of falcarindiol if the soil was also low in available magnesium and calcium. The concentrations of polyacetylenes in carrots were positively correlated with total soil phosphorus level, but negatively correlated with total soil potassium level. Of the three polyacetylenes analysed, FaDOH concentrations were influenced most by changes in soil chemical composition.
authors.affiliation: Department of Plant Breeding, Swedish University of Agriculture, P.O. Box 101, Alnarp 230 53, Sweden. lars.kjellenberg@slu.se.
authors.forename: Lars
authors.initials: L
authors.lastname: Kjellenberg
authors.affiliation: Department of Plant Breeding, Swedish University of Agriculture, P.O. Box 101, Alnarp 230 53, Sweden. eva.johansson@slu.se.
authors.forename: Eva
authors.initials: E
authors.lastname: Johansson
authors.affiliation: Department of Plant Breeding, Swedish University of Agriculture, P.O. Box 101, Alnarp 230 53, Sweden. karl-erik.gustavsson@slu.se.
authors.forename: Karl-Erik
authors.initials: KE
authors.lastname: Gustavsson
authors.affiliation: Biodynamic Research Institute, Skilleby, Järna 153 91, Sweden. arturgranstedt@jdb.se.
authors.forename: Artur
authors.initials: A
authors.lastname: Granstedt
authors.affiliation: Department of Plant Breeding, Swedish University of Agriculture, P.O. Box 101, Alnarp 230 53, Sweden. marie.olsson@slu.se.
authors.forename: Marie E
authors.initials: ME
authors.lastname: Olsson
keywords: Daucus carota; carrot; falcarindiol; falcarindiol-3-acetate; falcarinol; organic agriculture; polyacetylenes; soil parameters; soluble sugar