Narumol Vachirapatama and Yaowapha Jirakiattikul

pp. 427 - 431

Abstract

The effects of vanadium on growth of Chinese green mustard (Brassica campestris spp. var. parachinensis) and its accumulation in plant tissues were investigated. Substrate culture was set to grow the plants. Two weeks after planting, plants were exposed for 3 weeks with a solution containing 6 different concentrations of ammonium metavanadate (0-80 mg/l). The results showed that stem length, number of leaves, and leaf and stem fresh weight of the plants treated with solution containing 80 mg/l ammonium metavanadate were significantly lower than those of the plants treated with solutions of 0-40 mg/l ammonium metavanadate. The vanadium accumulated in the plant tissues and substrates were determined by ioninteraction high performance liquid chromatography technique. Higher concentration of ammonium metavanadate applied on plant, resulted on higher vanadium accumulated in tissues. Substrate, leaf and stem tissues of plants treated with 80 mg/l
ammonium metavanadate showed the highest accumulation of vanadium at 20.981, 1.658 and 2.046 mg/g, respectively.