As xylophyta, it is very difficult for rooting induction, so the key about tissue culture is how to improve rooting rate, and this need remain to study further.

• 选用刺五加的叶片、茎尖、当年生根为材料，研究了激素对刺五加愈伤组织继代培养、不定芽发生及生根的影响。