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 ?
The founding food hubs plan to soon jointly market products under the "Tap Root Cooperative" unified brand.
([section]) LRN, lateral root number; RL, root length; SDW, shoot dry weight; SDWR, shoot dry weight reduction; TRDW, total root dry weight; W/L, root weight per unit length of tap root. Table 2.
After you start getting your first roots for eating, you can take side shoots from the main tap root for new plantings.
When Zobel crossed a mutant tomato plant that had no lateral roots with one that had no adventitious roots, he should have gotten an offspring with only a tap root, according to the conventional wisdom that said only those three types of roots existed.
A: We don't have a list of trees with a tap root because most neither develop one nor need one unless they are on a dry site where the roots must go very deep to find water.
Tap root elongation in the subsurface solution compartment followed a curvilinear trend, but there were no significant differences (P [is less than] 0.05) in genotypic response to pH and Al treatments (data not shown).
Due to a deep tap root, often three feet or more in length, it withstands droughts better than most lawn grasses and also brings up minerals from the subsoil.
It can also be tough getting the weed's entire tap root out.
Its black tap root is a source of red dye, sometimes added to henna.