The plastids developed as the so called proplastids.
质体转变为所谓的原质体。
Proplastids possessed a simple fine structure with a few or without any internal membranes.
原质体结构简单，含少量或不含内膜结构。
The proplastids differentiate to form characteristic organelles such as amyloplasts, chloroplasts and chromoplasts.
前质体能分化成各具特点的细胞器，如淀粉体，叶绿体和有色体。
应用推荐