Durum wheat or macaroni wheat (Triticum durum or Triticum turgidum subsp. durum is the only tetraploid species of wheat of commercial importance that is widely cultivated today. It was developed by artificial selection of the domesticated emmer wheat (like emmer, durum wheat is awned) . Durum wheat is a tetraploid wheat, having 28 chromosomes, unlike hard red winter and hard red spring wheats, which are hexaploid and have 42 chromosomes each.
