Abstract
In this study, we reported the selective breeding process and root contents in a new Japanese wild radish line. According to the root shape and late flowering characteristic, a new Japanese wild radish line was selected from several wild populations of Japanese wild radish growing beside Lake Shinji and in the areas surroundings Shimane Peninsula, Japan. The shape and weight of the roots in the selected line remained almost fixed during fiscal year 2006. Reduced ascorbic acid, isothiocyanate, total soluble solids and total phenol concentrations in the roots of the selected line were higher than that of ‘Taibyousoubutori’, and equivalent to ‘Karamaru’. Fructose, glucose and sucrose were detected in the roots of the selected line, and the compositions of these sugars were similar to those of ‘Karamaru’. The root contents of the selected line changed during the harvesting period. Based on these results, we concluded that the new Japanese wild radish line is available as a new spice crop.
