Abstract: The stomata of Mains Zumi tube-plant are all open. The plantlet has no root hair in its root systems. After the plantlet is transplanted in soil, their stomata shut gradually, and their root systems develope normally. The Malus Zumi test-tube-plantlet has no main root, it has lots of roots which are in the surface soil layer. So the Malus Zumi can grow well in the soil where the underground water level is high. This discovery has laid a theoretical basis for technology of plantlet transplantation.

Key words: Mains Zumi, Tube-plant, Stomata, Root system developing