Identification of Panax sp.Species Based on ITS2 DNA Barcode
Panax sp.species,most have the important value of biological and pharmaceutical.The identification ability of Panax sp.species used DNA barcode ITS2 was tested.The result showed that ITS2 had a good commonality,and some differences in panaxspecies,the sequence analysis results revealed that there were 41 mutation sites,189 conserved sites,tbeintraspecific genetic distance varied from 0 to 0.004,while the genetic distance among the species ranged from 0.006 to 0.098 with the average value of 0.044.The phylogenetic tree constructed by the neighbor-joining method shows that the same species gather together.Therefore,ITS2 can identify Panax sp.species effective,and it provides a possibility for Panax sp.medicinal materials and its adulterants.