Light had no significant effect on traits related to onion (Allium cepa L.) seed production by plants from bulbs which had been exposed to various light and temperature treatments during storage. However, storage temperature affected seed yield/plant, number of seed/plant, number of seed/umbel, weight of individual seeds, and number of leaves/plant. Plants from bulbs stored at 7°C the first half and 2°C the last half of the storage period had the highest seed yield and the greatest number of seeds/plant. The heaviest seeds were produced by plants from bulbs that were stored at both 2° and 7° during the storage period. Bulbs stored at 2° and then at 7° produced plants that had fewer leaves than plants from bulbs stored at the 2 other temperature regimes.