Transplant the plantlet with roots to the culture medium WPM with no growth regulator, after 30 days, the mean root number is 5.5, the mean root length is 1.6cm, the longest root is 5.2cm.

• 将己经生根的小苗转移到不含激素的WPM培养基上30d后，平均根数可达5.；5条，平均根长达1