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.

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Author(s): E. Bayne Snyder

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