• Iriantono, Djoko
  University of Maine Graduate School
  

A progeny test of black spruce from throughout Maine has been established for 13 years. In this study, the height growth of these trees was analyzed to estimated heritability and expected gain, to detect genotype x environment (GE) interaction significance, to examine age-age correlation effects, and to identify parent-tree class and parental stand effects.  In addition to height growth, cone yield and seed variability of these 13 year old black spruce examined in this study.

These findings are valuable for tree breeders and forest managers. The tree breeders can use the genetically improved materials for advanced generations, while the managers can use seeds from the genetically selected trees for reforestation activities.