1Laboratory for Basic Science in Horticulture, Faculty of Horticulture and Landscape Architecture, Warsaw University of Life Sciences, ul. Nowoursynowska, 159, 02–776, Warsaw, Poland.
2Biodiversity Division, National Institute for Agro-Environmental Sciences, 3-1-3, Kan-non-dai, Tsukuba, Ibaraki, 305–8604, Japan.
*Correspondence author: E-mail: stanislaw_gawronski@sggw.pl
The phenolics (rutin, quercetin, (+)-catechin, (−)-epicatechin and acids: chlorogenic, caffeic, ferulic and gallic) contents of 4 buckwheat Polish cultivars (‘Hruszowska’, ‘Kora’, ‘Luba’ and ‘Panda’) were determined in plant organs (leaves, inflorescences and stems). The main phenolic compound in leaves, inflorescences and stems was rutin followed by chlorogenic acid, except that (−)-epicatechin content was higher in leaves. There were minor differences in the concentration of particular phenolic compounds in test cultivars. The highest yield (mg m−2) of rutin and all phenolic acids was recorded in ‘Kora’ and ‘Panda’ cultivars, respectively. The bioactivity of identified phytochemicals in buckwheat was tested on mustard seedlings growth. Based on the concentration and phytotoxicity, rutin proved major allelochemical in Polish buckwheat.
Allelochemicals, bioassay, Fagopyrum esculentum Moench, mustard, phenolics
