14C 추적자법(追跡子法)에 의한 감귤의 당과 유기산에 관한 연구 : C1- 과 SO 의 엽면처리효(葉面處理效果)과 Effects of Foliar Application of C1- and So = Studies on the Sugar and Organic Acid in Fruits of Citrus unshiu Marc . by 14C Tracer Method

다국어 초록 (Multilingual Abstract)

The effects of spraying Cl^- and SO₄^(2-) solutions on sugar, organic acid and amino acid levels in citrus(C. unshiu Marc.) fruit juice were examined using the ^(14)C-tracer method. Each ^(14)C-labelled compound under investigation was measured during the three weeks after ^(14)CO₂ assimilation. The total carbon compound, which was measured as the specific activity(cpm/㎖) of ^(14)C, was transported more into the fruit juice within one week after ^(14)CO₂ assimilation with the SO₄^(2-) treatment than with the Cl-treatment, The ^(14)C-specific activity changes of the sugar fraction were very similar in both Cl- and SO₄^(2-) treatments although the organic acid fraction was reduced more by SO₄^(2-). The specific activity ratio of the sugar fraction to organic acid was increased rapidly when treated with Cl-. This indicates that SO₄^(2-) plays a role in raising the ratio of sugar to organic acid. It was found that the ^(14)C-specific activity in the amino acid fraction was higher when Cl- was applied.