Date of Award:

5-1951

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Plants, Soils, and Climate

Department name when degree awarded

Botany and Plant Pathology

Committee

G. W. Cochran

Committee

B. L. Richards

Abstract

Western-X disease is considered to be the most serious and destructive virus disease affecting peaches in the northwestern United States. The virus causing this disease in peach also infects chokecherries and most varieties of sweet and sour cherries. There is also evidence (13) that certain varieties of plums and apricots are susceptible. No information now exists to indicate that the virus occurs in plants outside of the genus Prunus. It is found that woody plants such as stone fruit trees are not particularly favorable plants for studying the virus. All attempts to isolate the western-X virus from woody tissue have been unsuccessful. Also, stone fruit trees pass much of the time in dormant condition. Far better progress would undoubtedly be made if it were possible to get the virus into herbaceous plants which are more suitable plants for studying the virus. To further extend the suscept range of the virus a suitable method of transmitting the western-X virus from woody stone fruit trees to herbaceous plants must be developed.

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