In this paper,we reported a method for rapid extraction of DNA from soybean cyst nematode(SCN).It is difficult and time consuming to obtain high quality DNA by using bacterial genomic DNA extraction kit for the special growth environment of SCN.Three methods for extraction of DNA were compared in this study,including Bacterial genomic DNA extraction kit,San Prep column plasmid DNA Kit and CTAB method.Results showed that DNA isolated by improved San Prep column plasmid DNA Kit was high quality with time savi...