HEAT INACTIVATION OF LEAF-ROLL VIRUS IN POTATO TUBERS

When potato tubers were stored at 37^-5^° C. in a humid atmosphere, some lost their germinating power after 20 days but others survived up to 40 days. All tubers infected with leaf-roll virus that survived 25 days at this temperature produced healthy plants. Similar treatments up to 40 days did not free tubers from potato viruses X and Y.