taproot

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taproot

the large single root of plants such as the dandelion, which grows vertically downwards and bears smaller lateral roots

taproot

[′tap‚rüt]
(botany)
A root system in which the primary root forms a dominant central axis that penetrates vertically and rather deeply into the soil; it is generally larger in diameter than its branches.
References in periodicals archive ?
Although inhibition of root elongation has been widely recognized as the most striking symptom of Al toxicity on plants (Clarkson, 1965: Foy, 1988), root growth characteristics such as total root length, root dry matter, and taproot length, or the longest seminal root, when used to identify Al-tolerant cultivars in Al-toxic soil, often produce contradictory results compared with shoot growth measurements.
Decreasing stand density increased taproot size and increased branching of alfalfa roots (Garver, 1922; Upchurch and Loworn, 1951).
Membranes were incubated in antibodies raised to taproot VSP (Cunningham and Volenec, 1996) diluted (1:10 000) in Tris-buffered saline (10 mM Tris-HCl, 150 mM NaCl) containing 1.
This reflected greater variability caused by fewer samples contributing to the mean (five taproots and 30 sections compared with 25 to 35 taproots and 150-195 sections).
Our first objective was to determine if there is a relationship between taproot diameter and ability of rosettes to survive herbicide treatment.
Fibrous root systems are generally much more diffused and closer to the surface than the taproot system.
The two parents were not significantly different for specific RL nor for taproot parameters.
A `FaberCastell uni POSCA' marker pen, which contains orange-coloured water-based fluorescent paint, was used to highlight the live cotton taproots.
Seedlings of perennial species varied in root system morphology; some resembled annuals whereas others had deep taproots and high root/shoot ratios (Table 1).
You can move young plants readily; older plants have taproots and can't be moved safely.
In the case of dandelions, curly dock and numerous other plants, their deep taproots drew moisture from soils deep below the surface roots of plantain, lawn grasses and other shallow-rooted plants.