Propagation of Fraser Fir by Stem Cuttings: Effects of Type of Cutting, Length of Cutting, and Genotype1

Abstract

Stem cuttings of Fraser fir [Abies fraseri (Pursh) Poir.] were used in 3 studies to examine rooting and visible terminal bud activity as influenced by cutting length (10 to 26 cm), type of cutting (laterals vs. terminals) and genotype. Pronounced genotypic variation was observed for percentage of rooting as well as number and length of roots. Trees which rooted in high percentages produced the greatest number and length of roots. Cutting length did not affect percentage of rooting. Long cuttings exhibited less visible bud activity and produced the greatest number of roots. Lateral cuttings exhibited a higher percentage of rooting than terminals, particularly without treatment with indolebutyric acid (IBA), and also displayed greater visible terminal bud activity.