How does a potato tuber develop?

In contrast to the common misconception, potato tubers do not develop from roots, but in fact are underground trunks with shortened and extended axes. The tubers are obtained from the lateral buds of the underground developing at the base of the main trunk, which is stored in the underground mining of stolons at the expense of diagravitropical. When conditions are favorable for the initiation of tubers, the elongation of the stolon stops, and the cells, in the core and bark, first expand and then divide longitudinally. When the swollen area reaches a diameter of about 2-4 mm, longitudinal division stops and is replaced by randomly oriented divisions and cell enlargement. They occur primarily in the perimedula and continue until the tubers reach their final mass. The complexity of tubers in relation to different tissues is much less than that of seeds. In addition, the development program is much more flexible, for example the final size of tubers can vary by more than 100 times.