Forest tree improvement research in the Lake States /

Abstract

To determine whether fast-growing white spruce nursery stock continues superior growth after being transplanted into the field; eventually to use this planting as a seed orchard if superior genetic characteristics appear to be involved. Methods: Exceptionally fast-growing 2-2 white spruce stock was chosen from the company nursery and was planted in the field with controls. Accomplishments: Eight-year measurements indicate a definite advantage in growth for the super stock. Approximately 20 percent of the regular stock trees also have very good growth.

Figured grain in aspen is heritable and not affected by graft-transmissible signals

“…The role of genetics was studied (Anonymous 1929;Righter 1934;Robbins 1953) and shown to be involved in the formation of certain types of figure in European birch (Betula pendula Roth) (Persson 1954;Václav 1969). Early attempts to study Birdseye maple using seedlings and cuttings failed to establish that this type of figure was heritable (Robbins 1953;Rudolf 1954). Research focused on transmissible signals revealed that ethylene regulates the severity of spiral grain angle in Norway spruce and balsam fir [Abies balsamea (L.) Mill.]…”

“…Figured wood is widely used in furniture, paneling, musical instruments and other decorative applications. For centuries, people have tried to understand the mechanism of figure formation and to predictably produce figure in wood (Anonymous 1929;Robbins 1953;Rudolf 1954;Bragg and Stokke 1993;Bragg et al 1997). To date, there are no reports of ways to reliably produce figured wood on a large scale (e.g., commercial plantations).…”