Triticum araraticum Triticum araraticum Triticum araraticum (Araratian wild emmer or Armenian wild emmer) is a wild tetraploid species of wheat. "T. araraticum" is one of the least studied wheat species in the world. The "T. araraticum" species appears to have arisen from the natural hybridization of T. boeoticum and Aegilops speltoides. "T. araraticum" is similar to the domestic T. timopheevii in several ways including physical appearance, cytoplasm type and DNA content. The relationship has led some taxonomists to classify "T. araraticum" as a subspecies of "T. timopheevii". In July 1988 different lines of "T. araraticum" were studied using the C-banding method revealing
Cover crop ("Sinapis alba") and radish ("Raphanus sativus"). They can be grown after a main (cereal) crop and trap nematodes, for example the beet cyst nematode and Columbian root knot nematode. When grown, nematodes hatch and are attracted to the roots. After entering the roots they cannot reproduce in the root due to a hypersensitive resistance reaction of the plant. Hence the nematode population is greatly reduced, by 70-99%, depending on species and cultivation time. Other cover crops are used to attract natural predators of pests by providing elements of their habitat. This is a form of biological control known as habitat