| determination of the races of potato virus x and its host rang in karaj, damavand and ardabil, iran. | potato virus x (pvx) is found commonly in potato-growing areas, worldwide. it is an economically important virus which causes losses in tuber yield of approximate 5 to 15 percent. in a 2 year survey, potato leaf and tuber samples were collected from various fields in damavand and karaj. the initial isolations from potato were made by mechanical inoculation first to gomphrena globosa l. and later to dartura stramonium l. it was not transmitted by 2 species of cuscuta but transmitted mechamically. ... | 2005 | 16637211 |