Pale and translucent calli with early stage proembryos were maintained and multiplicated on DCR medium supplemented with 2,4 D 1 0 mg/L KT and BA each at 0 4 mg/L.

• 将白色半透明的愈伤组织（含早期原胚）在含2，4－D1.；0 m g/L，KT和BA 各0