Resistance to Russian Wheat Aphid in Wild Hordeum Species

摘要: The Russian wheat aphid, Diuraphis noxia (Mordvilko), is a serious pest of cultivated barley, Hordeum vulgare L., grown where the aphid endemic. resistance identified in several wild spp. may provide genetic variation necessary to breed aphid-resistant barleys. Eighty-four accessions representing seven species and four subspecies were screened identity aphid. Resistance was measured by plant damage, reproduction, survival when confined for 14 d