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Freshly dug sweet potato plants with tubers Hemerocallis tuber roots. A root tuber, tuberous root or storage root is a modified lateral root, enlarged to function as a storage organ. The enlarged area of the tuber can be produced at the end or middle of a root or involve the entire root.
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.
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 of the tuber, suggesting that it is a root tuber. [6] As an example of a combination, juno irises have both bulbs and storage roots. [7]
Root vegetables are underground plant parts eaten by humans or animals as food. In agricultural and culinary terminology, the term applies to true roots such as taproots and tuberous roots as well as non-roots such as bulbs , corms , rhizomes , and stem tubers .
Tuber - An enlarged fleshy end of a stem, generally from rhizomes but often also referring to thickened roots. A number of underground stems are consumed by people including; onion , potato , ginger , yam and taro .
The tuber is consumed raw, steamed, or deep-fried. It is added to savory soups, or can be sweetened with a berry sauce. When used fresh, the tuber is peeled before slicing and using them in stir-fries (mainly in Cantonese cuisine). Oftentimes, Chinese yam can be found sold in prepared, dried slices in dried goods specialty shops.
A stem tuber may form from thickened rhizomes or stolons. The tops or sides of the tuber produce shoots that grow into typical stems and leaves, and the undersides produce roots. Such tubers tend to form at the sides of the parent plant and are most often located near the soil surface.
These stolon-like rhizomes are long and thin, with long internodes and indeterminate growth with lateral buds at the node, which mostly remain dormant. [ citation needed ] In potatoes , the stolons [ 15 ] start to grow within 10 days of plants emerging above ground, with tubers usually beginning to form on the end of the stolons. [ 16 ]
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