| Abstrakt: |
When Keswick, Canso, and Katahdin plants were inoculated with potato virus X 35 days or less before harvest, the virus moved into more tubers of Keswick than of Canso or Katahdin. The least number of infected tubers was found in Katahdin. The number of tubers not wholly infected increased in the three varieties as the time from inoculation to harvest decreased. In partially infected tubers of Keswick, virus X was found in eyes from the eye end more frequently than in eyes from the stem end or sides, but in Canso and Katahdin the location of an eye had no apparent effect on whether or not an eye become infected. Infected and non-infected tubers were found under some plants in each of the three varieties. Little, if any, movement of virus had taken place within tubers during storage. |
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