Rhizome
175217
224882511
2008-07-10T20:49:37Z
CrazyChemGuy
5525799
Reverted edits by [[Special:Contributions/97.113.37.20|97.113.37.20]] to last version by Mgiganteus1 (using [[WP:HG|Huggle]])
{{Cleanup|date=November 2007}}
{{otheruses}}
[[Image:Gingembre.jpg|thumb|[[Ginger]] rhizome]]
[[Image:Iris rhizome p1150371.jpg|thumb|[[Iris (plant)|Iris]] rhizome]]
In [[botany]], a '''rhizome''' is a horizontal [[plant stem|stem]] of a [[plant]] that is usually found underground, often sending out [[root]]s and [[shoot]]s from its nodes. Plants with underground rhizomes include [[ginger]], [[hops]], and [[turmeric]], significant for their medicinal properties, and the weeds [[Johnson grass]], [[bermuda grass]], and [[Cyperus rotundus|purple nut sedge]]. Some plants have rhizomes that grow above ground or that sit at the soil surface, including some ''[[Iris (plant)|Iris]]'' species, and [[fern]]s, whose spreading stems are rhizomes. Rhizomes may also be referred to as creeping rootstalks, or rootstocks. A [[stolon]] is similar to a rhizome, but, unlike a rhizome, which is the main stem of the plant, a stolon sprouts from an existing stem, has long internodes, and generates new shoots at the end, e.g., the [[strawberry]] plant. In general, rhizomes have short internodes; they send out roots from the bottom of the nodes and new upward-growing shoots from the top of the nodes.
For many plants, the rhizome is used by gardeners to propagate the plants by a process known as [[vegetative reproduction]]. Examples of plants that are propagated this way include [[asparagus]], [[ginger]], [[iris (plant)|iris]]es, [[Lily of the Valley]], [[Canna (plant)|Cannas]], and [[sympodial]] [[orchid]]s.
A stem [[tuber]] is a thickened part of a rhizome or [[stolon]] that has been enlarged for use as a [[storage organ]]. <ref>Kingsley R. Stern ''Introductory Plant Biology'', 10th ed. ISBN 0072909412</ref> In general, a tuber is high in [[starch]], for example, the common [[potato]], which is a modified stolon. The term tuber is often used imprecisely, and is sometimes applied to plants with rhizomes.
The rhizome is a key metaphor in the [[philosophy]] of [[Gilles Deleuze]] and [[Felix Guattari]].
==References==
<references/>
[[Category:Plant anatomy]]
[[Category:Plant reproduction]]
[[ca:Rizoma]]
[[cs:Oddenek]]
[[da:Rhizom (botanik)]]
[[de:Rhizom]]
[[et:Risoom]]
[[es:Rizoma (botánica)]]
[[eo:Rizomo]]
[[fr:Rhizome]]
[[id:Rizoma]]
[[it:Rizoma]]
[[he:קנה שורש]]
[[lt:Šakniastiebis]]
[[hu:Gyöktörzs]]
[[nl:Wortelstok]]
[[ja:地下茎]]
[[pl:Kłącze]]
[[pt:Rizoma]]
[[ro:Rizom]]
[[sl:Korenika]]
[[sr:Ризом]]
[[fi:Maavarsi]]
[[vi:Thân rễ]]
[[uk:Кореневище]]