Fig.2—8 SEM observation of the isolated secondary wall from tracheary elements.
图2—8为扫描电镜下观察到的管状分子离体次生壁。
英语百科
Tracheid
Tracheids are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts. Tracheids are one of two types of tracheary elements, vessel elements being the other. Tracheids, unlike vessel elements, do not have perforation plates.