- Stanton, Brian John
University of Maine Graduate School
Paper birch (Betula papyrifera Marsh.) trees growing in pure, even-aged stands were evaluated for their phenotypically superior growth rates using three plus tree selection methods. The objective was to determine whether selection methods differed significantly in their ability to identify those trees having superior genotypes. The three selection methods used were, a comparison tree method, an absolute value method, and a base line method. Field selections were made in two stands located in western Maine, during the summer of 1978.