The young plant grew vigorously after differentiation. The multiplication percentage of PLB was up to 332% after 30 days cultivation on 1/2 MS medium. MS medium was advantageous to differentiation.

• 以 1/2MS 为基本培养基培养 30d；原球茎增殖率达 332%25；MS 培养基更有利于分化；培养 2 个月分化发芽率达 90.；6%25;