Abstract: The juvenile-mature rank correlation of white elm tree height and DBH increment have been calculated according to the results of provenance test which was carried out for 10 years already. It was shown that phenotypic and genetic correlation was significant at 0.01 level. It suggested that the expression of white elm trees at the 4th year after plantation could be able to detect the expression of trees at the 10th year reliablly. And early selection would be appropriate from the 5th year, which was calcubated from the correlation gain and annual efficiency at different selection ages of white elm trees.

Key words: Ulmus pumila, Provenance, Juvenile-mature correlation, Early selection