a) PCR amplification of rolB gene, lane 2: DNA from hairy roots; lane 3: A. rhizogenes DNA (positive control); lane 4: DNA from non-transformed root (negative control). b) PCR amplification of rolC gene, Lane 5: DNA from hairy root; lane 6: A. rhizogenes DNA; lane 7: DNA from non-transformed root. c) PCR amplification of virD gene, Lane 8: DNA from hairy root; lane 9: A. rhizogenes DNA; lane 10: DNA from non-transformed root. Lanes 1and 11: Molecular size marker (100 bp ladder, Fermentas Co., Germany).