Peanut plants were allowed to grow in the apparatus, separating the fruit zone from the root zone, and three treatments were set as follows : the fertilizer-N was not supplied to both zones (I treatment), 1.0 g of N to the root zone (II treatment) and 0.5 g of N to the fruit zone (III treatment). After gynophore penetration, the fruit harvested on the 20th, 30th, 50th and 80th days was divided into the shell, seed coat and seed. In the NO_3-N content of the shell, the III treatment was higher through the growth stage of fruit than other treatments, while NO_3-N and NH_4-N contents of the seed coat in the I treatment was highly changed in comparison in every treatment reaching to maximum, the arginine ratio of amino-N was the highest in every part of the fruit except the shell of the III treatments in which the asparagine ratio was higher than ratios of other amino-N. The sum of total sugar content of each part was lower from the 30th to 50th day in the I treatment than in other treatments. In each part of fruit, inositol, fructose, glucose and sucrose were detected. In the seed of the II treatment the ratio of sucrose was higher than in other treatments.
