METHOD: Life Cycle CONDITIONS: Field METHOD NARR: True Potato Seed (TPS) was planted in the field. When the plants were 78 days old, plant stands, tuber number, tuber weight and average tuber weight were assessed. Plants were aormance under hot conditions. Plants were rated for ground cover and vigor at 60 days. Tubers were harvested at maturity. The tests were conducted in 1984 and 1985. In 1984, 1488 accessions were tested and data is present. RESULTS NARR: There were no significant differences for ground cover or vigor among the 5 best entries. Tubers in general tended to be small (no line averaged over 10g) and many plants did not tuberize under these hot cond: Plants with ground cover would have cooler soil which favors tuberization. Large total yields instead of large tubers, along with tuber uniformity and quality, should be emphasized for most tuber production from TPS.