Accumulation of biologically active compounds in the seeds of Rhaponticum carthamoides (Willd.) Iljin cultivated in Poland
Anna Geszprych, Zenon Węglarz
Department of Vegetable and Medicinal Plants
Warsaw Agricultural University
Nowoursynowska 166, 02-787 Warszawa, Poland
The aim of the present study was to determine ecdysterone
(20-hydroxyecdysone) and sterol content in the seeds of Rhaponticum
carthamoides cultivated in Poland. The effect of plant age, seed
ripeness, and location of seeds in a fructification on the concentration
of the above-mentioned compounds in seeds was investigated. The seeds of
4-year-old plants were characterised by a significantly higher content of
ecdysterone and sterols in comparison with the seed of 2- and 3-year-old
plants. The concentration of ecdysterone and sterols in the ripe seeds was
distinctly higher than in those collected at milk- and wax-ripe stages.
The concentration of investigated compounds (especially ecdysterone) in
the seeds was related to their location in a fructification and was
significantly higher in the achenes from the external part of a capitulum.
Geszprych A., Węglarz Z., 2002. Accumulation of biologically active compound in the
seeds of Rhaponticum carthamoides (Willd.) Iljin cultivated in
Poland. Folia Horticulturae 14/1: 195-199.