title: [Screening potential DNA barcode regions of genus Papaver].
abstract: DNA barcoding is an effective technique in species identification. To determine the candidate sequences which can be used as DNA barcode to identify in Papaver genus, five potential sequences (ITS, matK, psbA-trnH, rbcL, trnL-trnF) were screened. 69 sequences were downloaded from Genbank, including 21 ITS sequences, 10 matK sequences, 8 psbA-trnH sequences, 14 rbcL sequences and 16 trnL-trnF sequences. Mega 6.0 was used to analysis the comparison of sequences. By the methods of calculating the distances in intraspecific and interspecific divergences, evaluating DNA barcoding gap and constructing NJ and UPMGA phylogenetic trees. The sequence trnL-trnF performed best. In conclusion, trnL-trnF can be considered as a novel DNA barcode in Papaver genus, other four sequences can be as combination barcode for identification.
authors.forename: Shuang
authors.initials: S
authors.lastname: Zhang
authors.forename: Yu-jing
authors.initials: YJ
authors.lastname: Liu
authors.forename: Yan-sheng
authors.initials: YS
authors.lastname: Wu
authors.forename: Ying
authors.initials: Y
authors.lastname: Cao
authors.forename: Yuan
authors.initials: Y
authors.lastname: Yuan
mesh_terms: D058893:DNA Barcoding, Taxonomic / Q000379:methods*; D010207:Papaver / Q000145:classification* / Q000235:genetics