Changes in thiocyanate content in some radish Raphanus sativus L. cultivars during hypocotyl-root growth

Changes in the thiocyanate content in hypocotyl-roots and leaves of radish were observed in a two-year field experiment. Six cultivars were tested: early radish (Rex and Ostergruss Różowa), Japanese radish (Tokinashi and Minowase Summer Cross F₁), and winter radish (Monachijska Biała and Murzynka). A significant diversification in thiocyanate content among cultivars, plant parts, harvest dates and observation years was found. Early cultivars contained the least amount of these compounds, Murzynka — the greatest. The content of thiocyanates in leaves was 3 – 5 times higher than that in hypocotyl-roots. The changes in the thiocyanate content during root growth showed a constant rising tendency in the case of the leaves of all cultivars and the storage organs of Murzynka.