RNGR.net is sponsored by the USDA Forest Service and Southern Regional Extension Forestry and is a colloborative effort between these two agencies.

U.S. Department of Agriculture USDA Forest Service Southern Regional Extension Forestry Southern Regional Extension Forestry

Lattice and Compact Family Block Designs in Forest Genetics

One of the principles of experimental design is that replicates be relatively homogeneous. Thus, in forest research a replicate is often assigned to a single crew for planting in a single day on a uni- form site. When treatments are numerous, a large area is required per replication, and homogeneity of site is difficult to achieve. In this situation, crop scientists (LeClerg et al. 1962) frequently divide the replicate into sub-blocks. The most used of the incomplete block designs are the lattices. Another type of incomplete block designs, the compact fam- ily block (Hutchinson and Panse 1937; Federer 1955) — essentially a split-plot design with genetic rather than cultural whole plots — has also been advocated for certain genetic materials.


Download this file:

PDF document Download this file — PDF document, 332Kb

Details

Author(s): E. Bayne Snyder

Publication: Tree Improvement and Genetics - Lake States Forest Tree Improvement Conference - 1965