僵藕的形态和解剖

MORPHOLOGY AND ANATOMY OF STIFF TUBER IN NELUMBO NUCIFERA GAERTN

僵藕的部分表皮细胞已破坏或凹陷,表皮层上有入侵的真菌,表皮层之下为一层单宁细胞,其中有些已破坏或破裂,在基本组织中有多个由于薄壁细胞分解而形成的空腔。其薄壁细胞体积校正常藕者为小,且内含的蛋白质及淀粉粒很少。气道周围的细胞分裂已停止,没有草酸钙结晶存在,维管束减退甚至一个堆管束中部分或所有的管胞分子均已破坏,留下一个未质部空腔和韧皮部。

Some cells of the epidermis are destroyed or Furrowed. On the surface of the epidermis the attack of a parasitic fugi is often localized. Below the epidermis there is a layer of tannin cells some of which are destroyed and torn. Among the ground tissue there are numerous lucunae such lacunae can develop by the disintergration of the parenchymatus cells. The parenchymatus cells of the stiff tuber which size are usually smaller than those of the ordinary tuber and contain very few protein and starch grains. In the periperal region of the air passages, where the cells division has alread stoped. The crystals of calcium oxlate are absent in the air passages. The vascular bundles are much reduced often some or even all tracheary elements of a vascular bundle may become disorganized, leaving xylem lucuna accompanied by a phloem.