外植体

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.

以快食李的上、下胚轴为体，建立李胚轴再生体系，获得再生株。

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、源激素水平、种类以及体的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.

体的类型、物生长素、细胞分裂素的类型及二者的不同组合均对一品红在离体条件下株的再生具有影响。