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

Skip to content. | Skip to navigation

Home → Publications → Tree Improvement and Genetics → Southern Forest Tree Improvement Conference → 18th Southern Forest Tree Improvement Conference (1985) → Design Efficiencies With Planned And Unplanned Unbalancefor Estimating Heritability In Forestry

Design Efficiencies With Planned And Unplanned Unbalancefor Estimating Heritability In Forestry

Both balanced and unbalanced data can be analyzed for variance component estimation with Modified Maximum Likelihood estimates in a unified approach. Design efficiencies are evaluated for the estimation of heritability using this methodology, assuming knowledge of the variance components. Rules for obtaining efficient randomized block designs are established. The effect of number of blocks, plot size, number of families, variance on family size and total number of observations on design efficiency is examined across the range of heritability and under 100%, 90%, 80% and 60% survival.


Download this file:

PDF document Download this file — PDF document, 352Kb

Details

Author(s): Barbara G. McCutchan

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1985