Abstract
One hundred true seeds of 101 genetically distinct varieties ofSolanum tuberosum which had been collected during the harvest years 1958–1978 were allowed to germinate on moist filter paper in sealed petri dishes stored at 12°C and provided with a 7 hour day. Little vigor is lost in seeds 10 years old and no varietal differences were evident. Germination in all populations commenced on the 5th or 6th day and was completed five days later. Seeds older than 10 years began germination more slowly and the populations took longer to achieve maximum germination. Varietal differences became evident in older seeds. True seed ofS. tuberosum can be stored without stringent conditions with the expectation of good germination for 15 years and some germination for 20 years.
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