Measurements on growth traits up to 41 years of age
from 68 progeny sites in eight first-generation breeding
zones of coastal Douglas-fir (Pseudotsuga menziesii
[MIRB.] FRANCO var. menziesii) in the US Pacific Northwest
were used to investigate age trends of genetic parameters
and to determine optimum age of selection. Heritabilities...
This document is a summary of the March 1968 meeting to determine the cause of an oyster mortality incident. It answers several questions about criteria for establishing the causative organism and discusses programs for studying oyster mortalities.