[DNA barcoding in medicinal plants Caprifoliaceae].

Objective: To determine the candidate sequences which can be used as DNA barcode to identify species in Caprifoliaceae family by screening out from four different DNA fragments sequences.

Method: PCR amplification, sequencing efficiency, differential intra- and interspecific divergences, the DNA barcoding gap and identification efficiency were used to evaluate these loci.

Result: The ITS2 was used as a candidate sequence of DNA barcode to identify the species in Caprifoliaceae family, whose rate of success in identification in genera level was 100% and in species 96.6%, and psbA-trnH as a complementary barcode to ITS2 for Caprifoliaceae.