After 12 weeks culture, the multiplication rate of shoot clumps could reach 4.2.4) For elongation of the shoots, Anderson +6-BA2.0 mg/+NAA0.01 mg/L+AC1.0/Lwas the best medium.

• 4)丛生芽增殖：最适培养基为Anderson+6-BA1.；0mg/L，丛生芽增殖最快，90天时增殖系数可达4