It is easy to induce callus derived from hypocotyls and cotyledons, but callus derived from root tip was rather difficult to be done.

• 愈伤组织的诱导与再分化的研究显示：“种都一号”儿菜下胚轴与子叶愈伤组织诱导较容易，但根尖很难愈伤化。