Search results
Results From The WOW.Com Content Network
The tap root can be persistent throughout the life of the plant but is most often replaced later in the plant's development by a fibrous root system. [2] [3] A persistent taproot system forms when the radicle keeps growing and smaller lateral roots form along the taproot. The shape of taproots can vary but the typical shapes include:
Turnips, a taproot. Taproot (some types may incorporate substantial hypocotyl tissue) Arracacia xanthorrhiza (arracacha) Beta vulgaris (beet and mangelwurzel) Brassica spp. (kohlrabi, rutabaga and turnip) Bunium persicum (black cumin) Burdock (Arctium, family Asteraceae) Carrot (Daucus carota subsp. sativus) Celeriac (Apium graveolens rapaceum)
Root vegetables are underground plant parts used as vegetables.They are called root vegetables for lack of a better generic term, but include both true roots such as tuberous roots and taproots, as well as non-roots such as tubers, rhizomes, corms, bulbs, and hypocotyls
In its broader sense, a tap-root that is thick and fleshy (due to storage); i.e. when tuberation take place in a tap-root. Pneumatophores (respiratory roots) – Part of tap-root system as respiratory roots; found in many mangrove trees. They arise from the thick, mature branches of tap-root systems, and grow upwards.
A dimorphic root system is a plant root system with two distinct root forms, which are adapted to perform different functions. One of the most common manifestations is in plants with both a taproot, which grows straight down to the water table, from which it obtains water for the plant; and a system of lateral roots, which obtain nutrients from superficial soil layers near the surface. [1]
Asafoetida (/ æ s ə ˈ f ɛ t ɪ d ə /; also spelled asafetida) [1] is the dried latex (gum oleoresin) exuded from the rhizome or tap root of several species of Ferula, perennial herbs of the carrot family. It is produced in Iran, Afghanistan, Central Asia, northern India and Northwest China . Different regions have different botanical sources.
Suillus tomentosus, for example, produces these structures with its plant host lodgepole pine (Pinus contorta var. latifolia). These structures have, in turn, been shown to host nitrogen fixing bacteria , which contribute a significant amount of nitrogen and allow the pines to colonize nutrient-poor sites.
For example, research has found that the root systems of wheat seeds inoculated with Azotobacter showed higher populations in soils favorable to Azotobacter growth. Some studies have been unsuccessful in increasing the levels of certain microbes (such as P. fluorescens ) in natural soil without prior sterilization.