Five Hessian Fly Resistant Durum Varieties Released in Morocco
	Left: A durum field planted to a susceptible variety heavily damaged by Hessian fly. Right: A field planted to a new Hessian fly resistant variety being currently promoted for cultivation in farmers' fields. Five durum wheat varieties (INRA 1804, 1805, 1807, 1808, and 1809) combining resistance to Hessian fly and tolerance to drought were released in Morocco in 2003. Hessian fly (Mayetiola destructor) is an insect pest of durum and bread wheat responsible for severe reductions in production. In Morocco, the crop losses from Hessian fly infestations in the 2002/03 cropping season were estimated to reach as much as US$200 million. The release and subsequent adoption of these Hessian fly resistant varieties is key to breaking the drought-Hessian fly cycle prevailing in many rainfed areas, and preventing crop failure. Durum wheat is known for its susceptibility to Hessian fly, especially in the Mediterranean region. Pioneering research in durum wheat improvement in the region led to the discovery of genetic resistance to Hessian fly that was successfully incorporated into durum germplasm along with drought resistance. The release of these varieties by the Moroccan national program will significantly boost durum production in the region.

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