게르마늄 처리 토양에서 미나리 생육 특성과 게르마늄 흡수

Abstract

In order to obtain the basic information for agricultural utilization of Germanium(Ge), the growth characteristics and the germanium uptake by water celery were investigated at different concentration of germanium in soil. This experiment was carried out in the Wagner pot(1 ). Germanium concentrations in soil for water celery cultivation were maintained at 0.26, 25.0, 62.5, and 125.0 mg , respectively. The treatment of over Ge 25.0 mg in the soil led to germanium phytotoxicity such as reduction of plant height and fresh weight. The contents of germanium in water celery were increased with the increase of germanium concentration in the soil. When water celery was cultivated from soil maintained with Ge 25.0 and 62.5 mg , its germanium contents in plant were 89.9 and 371.6 mg , respectively. Then, the efficiency of germanium uptake of water celery in Ge 25.0 and 62.5 mg maintained plots was 1.7 and 2.4%, respectively. When water celery was cultivated from soil maintained with Ge 25.0, 62.5 and 125.0 mg , its content of amino acid was found to be 89.8, 198.4, and 318.2 mg , respectively. To investigate the effect of N fertilizer application in uptake of germanium by water celery, these were treated with nontreatment, 1.0, 1.5 and 2.0 times of N application based on soil testing for cultivation of water celery. However, the amount of the N fertilizer application did not affect the contents of germanium in the water celery. When water celery was cultivated from soil maintained with two kinds of inorganic and organic germanium 50 mg , respectively, the content of germanium were 24.2 mg in the Ge-132 treatment and 11.8 mg in the treatment.