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A geophyte (earth+plant) is a plant with an underground storage organ including true bulbs, corms, tubers, tuberous roots, enlarged hypocotyls, and rhizomes. Most plants with underground stems are geophytes but not all plants that are geophytes have underground stems. Geophytes are often physiologically active even when they lack leaves.
Underground farming is the practice of cultivating food underground. Underground farming is usually done using hydroponics , aeroponics or air-dynaponics systems or container gardens . Light is generally provided by means of growth lamps [ 1 ] or daylighting systems (as light tubes ).
A storage organ is a part of a plant specifically modified for storage of energy (generally in the form of carbohydrates) or water. [1] Storage organs often grow underground, where they are better protected from attack by herbivores.
Hydraulic redistribution is a passive mechanism where water is transported from moist to dry soils via subterranean networks. [1] It occurs in vascular plants that commonly have roots in both wet and dry soils, especially plants with both taproots that grow vertically down to the water table, and lateral roots that sit close to the surface.
The alfalfa, or Medicago sativa, is a widespread phreatophyte plant of great economic value. Trees like the ash, the alder, the willow and the poplar are also useful in this regard. These trees generally grow in freshwater aquifers where the water table depth is not more than ten meters.
Plants stop growing and seeds do not germinate when given only heavy water, because heavy water stops eukaryotic cell division. [35] Tobacco does not germinate, but wheat does. [ 36 ] The deuterium cell is larger and is a modification of the direction of division.
Water balance. Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater. Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and is often expressed as a flux to the water table ...
The tuber is produced in one growing season and used to perennate the plant and as a means of propagation. When fall comes, the above-ground structure of the plant dies, but the tubers survive underground over winter until spring, when they regenerate new shoots that use the stored food in the tuber to grow.