Callus was efficiently induced from in vitro root segment devoid of rhizodermis on MS medium.

结果表明，以离体去皮根段为外植体，MS为基本培养基，诱导愈伤组织较为适宜。

The regeneration systems of “kuai shi” plum were established, using epicotyl and hypotyl as exophyte.

以快食李、胚轴为外植体，建立华李胚轴生体系，获生植株。

The result showed that the successful rooting system was closely related to the concentration of macronutrient of MS medium, auxin concentration and developing state of the explant.

结果表明，培养基中无机盐浓度、外源激素水平、种类以及外植体发育状况等对试管嫩茎生根具有明显影响。

It is the factors affected plant regeneration in explant culture in Euphorbia pulchrrima willd to different explants or aurin or cytokinin or the combination of the auxin and cytokinin.

外植体类型、植物生长素、细胞分裂素类型及二者不同组合均对一品红在离体条件植株生具有影响。