author keywords: cinnamyl alcohol dehydrogenase; half-diallel mating; null mutation; heterozygotes; stem growth; wood density

TL;DR: The cad-n1 effect on growth and wood density was significant across genetic backgrounds, the effect was variable among full-sib families within backgrounds, and it is speculated that certain wild-type alleles from second parents specifically interact with cad- n1 producing large positive effects. (via Semantic Scholar)