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Stem tubers manifest as thickened rhizomes (underground stems) or stolons (horizontal connections between organisms); examples include the potato and yam. The term root tuber describes modified lateral roots , as in sweet potatoes , cassava , and dahlias .
As an example of an intermediate, the tuber of Cyclamen arises from the stem of the seedling, which forms the junction of the roots and stem of the mature plant. In some species (e.g. Cyclamen coum) roots come from the bottom of the tuber, suggesting that it is a stem tuber; in others (e.g. Cyclamen hederifolium) roots come largely from the top ...
A stem tuber is a thickened part of a rhizome or stolon that has been enlarged for use as a storage organ. [10] In general, a tuber is high in starch, e.g. the potato, which is a modified stolon. The term "tuber" is often used imprecisely and is sometimes applied to plants with rhizomes.
Tubers develop from either the stem or the root. Stem tubers grow from rhizomes or runners that swell from storing nutrients while root tubers propagate from roots that are modified to store nutrients and get too large and produce a new plant. [22] Examples of stem tubers are potatoes and yams and examples of root tubers are sweet potatoes and ...
Some stem tubers, such as those of tuberous begonias, are long lived, but many tuberous plants have tubers that survive only until the plants are in full leaf, at which point the tuber is reduced to a shrivelled up husk. [4] Roots can also form tuberous structures (tuberous roots or root tubers) that are in some ways similar to stem tubers, but ...
Young plant with tuber. Cyperus esculentus is an annual or perennial plant, growing to 90 centimetres (3 feet) tall, with solitary stems growing from a tuber. The plant is reproduced by seeds, creeping rhizomes, and tubers. [15] Due to its clonal nature, C. esculentus can take advantage of soil disturbances caused by anthropogenic or natural ...
Plants such as Homeria, Watsonia and Gladiolus, genera that are vulnerable to such animals, are probably the ones that produce cormels in the greatest numbers and most widely distributed over the plant. Homeria species produce bunches of cormels on underground stem nodes, and Watsonia meriana for example actually produces cormels profusely from ...
Tuber and roots A tuber of Cyclamen purpurascens with three floral trunks. The storage organ of the cyclamen is a round tuber, which develops from the hypocotyl (the stem of a seedling). It is often mistakenly called a corm, but a corm (found in crocuses, for example) has a papery tunic and a basal plate from which the roots grow. The storage ...