Resistance of barley landraces and wild barley populations to powdery mildew in Jordan

Eleven barley (Hordeum vulgare L.) landraces and 12 wild barley (H. spontaneum) populations, collected from diverse eco-geographical regions of Jordan, were screened for resistance to powdery mildew. The average powdery mildew disease score (based on a 0 to 4 severity scale) wa