Abstract:The seeds from 18 provenance populations of Robinia pseudocacia distributing in the middle Europe and the United States were collected and planted in a nursery in Waldsiversdorf, Germany. Using the leave from the two years old seedlings as materials, the genetic diversity and population genetic structure of the provenances were studied. Using starch gel and polyacrylamide gel electrophoresis, 7 enzyme systems (Amylase, Fluorescent esterase, Leucine aminopeptidase, Isocitrate dehydrogenase, Malate dehydrogen...