An efficient protocol for the establishment of transgenic high hariy root tea plant(Camellia sinensis) system induction infected by Agrobacterium rhizogenes is reported using two wild type strains of A.rhizogenes,three different co-cultivation media and six different explants.The highest induction frequency was obtained from stem segments of aseptic seedlings infected by A.rhizogenes and co-cultivated on YMB solid media with 100 mmol/L AS for 2 d.The hairy roots grew rapidly on LG0 medium without phytohormo...