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Internally, a tuber is filled with starch stored in enlarged parenchyma-like cells. The inside of a tuber has the typical cell structures of any stem, including a pith, vascular zones, and a cortex. [citation needed] The tuber is produced in one growing season and used to perennate the plant and as a means of propagation. When fall comes, the ...
Dioscorea alata – also called ube (/ ˈ uː b ɛ,-b eɪ /), ubi, purple yam, or greater yam, among many other names – is a species of yam (a tuber).The tubers are usually a vivid violet-purple to bright lavender in color (hence the common name), but some range in color from cream to plain white.
The tuber contains about 2% protein, no oil, and little starch. It is rich in the carbohydrate inulin (8 to 13% [12]), which is a polymer of the monosaccharide fructose. Tubers stored for any length of time convert their inulin into its component, fructose.
Yam tubers. Tuberous stem. Apios americana (hog potato or groundnut) Cyperus esculentus (tigernut or chufa) Helianthus tuberosus (Jerusalem artichoke or sunchoke) Hemerocallis spp. (daylily) Lathyrus tuberosus (earthnut pea) Oxalis tuberosa (oca or New Zealand yam) Plectranthus edulis and P. esculentus (kembili, dazo, and others) Solanum ...
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The bulbils on the vines sprout and become new vines, twisting around each other to form a thick mat. If the plant is cut to the ground, the tubers can survive for extended periods and send up new shoots later. [11] The leaf beetle Lilioceris cheni has been studied and employed as an agent of biological pest control for the plant, with releases ...
Such tubers tend to form at the sides of the parent plant and are most often located near the soil surface. A below ground stem tuber is normally a short-lived storage and regenerative organ developing from a shoot that branches off a mature plant. The new tubers are attached to a parent tuber or form at the end of an underground rhizome.
A similar 6-year study found tuber yields ranging from 4.02 to 6.75 t/ha, with an average oil content of 26.5% and an average oil yield of 1.47 t/ha. [37] The oil of the tuber was found to contain 18% saturated (palmitic acid and stearic acid) and 82% unsaturated (oleic acid and linoleic acid) fatty acids. [35]