Accumulation of Cadmium and Lead in Four Cultivars of Radish (Raphanus sativus L.) during the Seedling Period

Cadmium (Cd) and lead (Pb) are toxic even in small quantities decrease crop yields. They easily absorbed by plant roots, thus enter the food chain, risking human health. Radish (Raphanus sativus L.) is a widely consumed root vegetable Korea. Therefore, it important to screen for radish cultivar that exhibits low Cd Pb accumulation elucidate tolerance mechanism. In this study, we determined effect of stress on germination growth four cultivars, ‘Gaulgeojang’ (AG), ‘Iseogaul’ (IG), ‘Chongryong’(CR), ‘Supertogwang’ (ST). Furthermore, concentrations, production nonprotein thiols (NPTs), hydrogen peroxide (H2O2) levels were investigated cultivars seedlings under treatments. The showed during seedling following order: CR > ST IG AG. CR, tolerant cultivar, accumulated less roots both shoots than other cultivars. contrast, AG, sensitive exhibited greater treatments significantly increased NPTs all cultivars; highest level was found CR. also H2O2 lowest observed AG respectively. These results indicate may be attributable its higher potential limit form complexes metal-binding ligands with Pb. study provide information selection safest common Cd- Pb-contaminated soils.