The disease: symptomatology and host range of barley yellow dwarf; Distribution and economic importance of barley yellow dwarf; Epidemiology of barley yellow dwarf in Europe; Epidemiology of barley yellow dwarf in Australasia; Interactions of barley yellow dwarf viruses: cross-protection and interactions with other pathogens and with abiotic factors; The viruses: purification and viron characterization of barley yellow dwarf viruses; Genome structure and function of barley yellow dwarf viruses; Taxonomy of barley yellow dwarf viruses; The vectors: biology and taxonomy of vectors of barley yellow dwarf viruses; Aphid transmission of barley yellow dwarf viruses: interactions between viruses, and host plants; Control: barley yellow dwarf: diagnostic procedures and reagents; Cultural chemical, and biological methods for the control of barley yellow dwarf; Host plant tolerance or resistance for control of barley yellow dwarf; Prospects for genetically engineered resistance to barley yellow dwarf viruses.

Excerpt from Barley Yellow Dwarf: A Virus Disease of Cereals and Grasses Barley yellow dwarf has been recognized as a virus disease of cereals and grasses only since 1951, when it was discovered by Oswald and Houston (164) in California. Nevertheless, even in this short time it has become accepted as a disease of major importance i-n many areas of the United States, and in other countries as well. In 1959, for example, barley yellow dwarf virus incited the most serious single disease of oats in the United States and caused production losses in the central oat belt comparable with those recorded for various epidemics of other major diseases of that crop (156, Moreover, inherent in the economic implications of barley yellow dwarf is the long-range potential of a disease that is caused by a' versatile virus of wide host range. Even in its infancy, therefore, barley yellow dwarf seems destined to assume classic status among cereal diseases and thus to become increasingly important in teaching and research. Hence, there is compelling need for monographic treatment of this disease at this time, to provide both a teaching aid and a standard refer ence for the rapidly increasing diverse research activity. Throughout the manuscript, the author uses the terms cereals and small grains. These words are meant to refer only to barley, oats, wheat, and rye in this treatise. Also, considerable detail of aphid-life cycles is included in the belief that, as the only means of spread of the barley yellow dwarf virus, any factor affecting the aphid is important to the disease. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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