taproot

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taproot

a primary ROOT structure in which one main root forms the major part of the underground system. Taproots are often swollen, serving as storage organs of perennation. Many vegetable crops, such as carrot, swede, sugar beet, have taproots.
References in periodicals archive ?
sections]) FLEM and NDRN germplasm sources underwent two cycles of divergent selection for lateral root number; BRH is branch-rooted population and TAP is taprooted population.
1998) also showed that modern (released after 1980) alfalfa cultivars adapted to the upper Midwest were mostly taprooted with little variation in the number of lateral roots or amount of fibrous root mass.
Newer cultivars tended to be taprooted, with more and smaller secondary roots, and more fibrous roots than older cultivars of similar winter hardiness.