Abstract: Biennial and potted‘Shuangyou’wild grape ( Vitis amurensis Rupr. ) cultivar was used for the trial material and its distribution of assimilation products was studied by ¹⁴C tracing technique. The results showed that the ¹⁴C assimilation products were mainly distributed to the leaves fromflowering to fruit-coloration stage , the export distribution rate of leaves was 76.69 % - 45.09 %. During fruit ripeness the ¹⁴C assimilation products were mainly distributed to the fruit and the export distribution rate of fruit was 47.39 %. It shows that the leave have higher competition ability to absorb assimilation products than fruit during most growth and development stages. The fruit-coloration stage was key stage of assimilation products transition from leaves to fruit . The fruit ssimilation products distribution rate was higher during fruit growth than that of during flowering and fruit ripening stages.

Key words: Vitis amurensis Rupr., 14C tracing technique, Assimilation products, Distribution rate