Publication Date


Bulletin Number

TB 11

Document Type



Virus diseases of wheat, oats and barley have been reported from various parts of the world during the last three decades. In some instances viruses have proven be the real causes diseases formerly attributed to other agents. The earliest reports of a virus disease of wheat concerned a mosaicrosette disease first observed in southeastern Illinois in 1919. The disease caused by a soil-borne virus was later found in a number of localities in the eastern half of the United States, but to date it has not been reported west of the Missouri River. However, other mosaic disease of wheat have been observed on wheat in California. Reports from foreign countries indicate the occurrence of soil-borne mosaics in Japan and Egypt, and a leafhopper-transmitted virus causing a mosaic of wheat in western Russia. The virus diseases reported on oats include a soil-borne mosaic of winter oats in Alabama and Carolinas, and a leafhopper-transmitted virus in Siberia. Barley has also been infected with certain viruses. False stripe, which has long been considered a non-parasitic disease of barley, was recently shown to be caused by a virus which is seedborne. In 1951 an aphid-transmitted disease of barley named “yellow dwarf” was discovered in California. In the fall of 1949 experimental work was begun on virus diseases affecting cereal crops in South Dakota. The diseases that have been studied so far include wheat streak mosaic , wheat striate mosaic, barley false stripe, and Agropyron streak mosaic. The results of investigations on the distribution, transmission and host range of these diseases are presented.

Number of Pages



Agricultural Experiment Station , South Dakota State College