In order to get the genomic DNA of Hevea brasiliensis which is suitable for normal PCR reaction,Leaves of rubber tree were used to isolated the genomic DNA by CTAB method、SDS method and salting out method.The Genomic DNA samples extracted by three methods were tested by agarose gel elctrophresis and restriction endonucleas digestion,Based on the comparative analysis of yield and quality of the DNA samples by three methods,the result showed that DNA yield of CTAB method was higher than that of SDS method and...