Effect of Super Absorbent Polymer on Seed Germination and Seedling Roots of Haloxylon ammodendron and H. persicum

Effect of super absorbent polymer(SAP) on the seed germination and seedling root morphology of Haloxylon ammodendron and H.persicum was investigated based on a pot experiment.The results showed that,compared with the contrast,the seed germination rates of H.ammodendron and H.persicum were increased by 18.7% and 24.0% respectively when SAP concentration was 0.05%.Vertical growth of seedling roots of H.ammodendron was inhibited,while the growth and biomass accumulation of lateral roots were promoted when SAP concentration was 0.05%.Root length,lateral root number and root biomass of H.persicum all reached their maximum values at 0.1% SAP concentration.Seed germination and seedling root growth were all inhibited when SAP concentration was 0.2%.It was concluded that the perfect SAP concentration for H.ammodendron growth was 0.05%,and the best effect of SAP concentration for H.persicum varied in a range of 0.05%-0.1%.