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durum wheat:see wheatwheat,
cereal plant of the genus Triticum of the family Poaceae (grass family), a major food and an important commodity on the world grain market. Wheat Varieties and Their Uses
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(Triticum durum), a species of wheat with a tough, usually awned spike and a variously colored grain that is hyaline when broken. Durum wheat is a tetraploid species: there are 28 chromosomes in the somatic cells. It is a drought-resistant steppe crop with predominantly spring forms. It is used in the production of pasta products and semolina; it is also used to improve the bread-baking qualities of soft-wheat flour. Durum wheat is the second most widely cultivated type of wheat, after soft wheat. Of the more than 120 known subspecies of durum wheat, the most common are Hordeiforme, Melanopus, and Leukurum.