Effect of tree spacing, cone storage, and prechilling on germination of Picea glauca seed

Abstract

Cone length, full-seed-yield per cone, and full-seed weight were greatest for white spruce cones collected from trees at the 1.2 m spacing. When cones were stored for 2 wk, non-prechilled and prechilled seeds averaged 32.0 ± 1.0% and 62.3 ± 1.0% germination, respectively. When cones were stored for 6 weeks, non-prechilled and prechilled seeds averaged 61.3 ± 1.2% and 94.7 ± 0.5% germination, respectively. -from Authors