Tuber

A tuber is a fleshy, thickened organ of plant that grows under the ground. The data used in agriculture, plant tubers are also called tubers, although it is not to fruit in the botanical sense. Plant tubers are metamorphoses of basic plant organs shoot axis ( sprout tuber) or root ( tuber ). The tuber is used the plant for storage of reserve materials and the persistence of unfavorable living conditions as winter or drought. Onions are unlike tubers metamorphoses of shoot axis and leaves, the leaves take on the converted memory function. The most popular tubers are edible tubers of the potato. Tuberous roots are found in cassava, dahlias, lesser celandine.

In the legume nodule bacteria live in thickening of the root. However, these nodules are not in the treated tubers sense here.

See also: Metamorphoses of the root, Metamorphoses of the shoot axis, turnip, rhizome

Anatomy of the root tuber

Tubers show the typical structure of the Kormophytenwurzel; the area surrounded by a secondary endodermis central cylinder with pericycle, xylem and Phloemsträngen and surrounding cortex. This cortical layer is converted in the tuber by incorporation of many comparatively large amyloplasts in a large cell Stärkespeicherparenchym. Furthermore, the differentiation of amyloplasts in the formation zone of Speicherparenchyms is shown around the central cylinder.