Effects of Populus euphratica on seed germination and seedling growth of Alhagi sparsifolia in downstream of Tarim River

In order to explore the effects of vegetation on seed germination and seedling settlement during the process of ecological restoration, the allelopathy of the extracts of different plant tissue from Populus euphratica with various concentrations (0.04, 0.08, 0.12, 0.16, and 0.20 g·mL-1) on the seeds of perennial herb Alhagi sparsifolia was analyzed. The water extracts of P.euphratica have inhibition effects on the seed germination and seedling growth of A.sparsifolia. Different plant tissues and different concentrations of water extracts had different inhibition effects. The water extract of P.euphratica leaves had significantly inhibition effects on seed germination rate and seedling length of A. sparsifoliai The water extracts of stems also had significantly inhibiting effects on seed germination of A.sparsifoliai. The water extract of roots had significantly inhibiting effects on the seedling length of A.sparsifolia.