[AFLP analysis on genetic structure of planted Acacia auriculiformis population in Heshan]

AFLP analysis of Acacia auriculiformis populations in 3 different planted communities with the same provenance and same planting time indicated that the genetic heterozygosity was quite high in the plantation population. 90.73% of total genetic variance distributed within a population, while only 9.27% among populations. The most distinct genetic structural difference was found between pure plantation and legume mixed plantation, next was between legume and non-legume mixed plantation, and the most similar was between pure and non-legume mixed plantation, which revealed that the genetic variation in this Acacia auriculiformis population was relatively higher than that from the natural forests by isoenzymic analysis data. The genetic differentiation was not the result of gene flow, but the result of the artificial selection and the microenvironmental changes.