Inbreeding depression in an old experimental plantation of Picea abies

Abstract

Recent data from an experimental plantation of Picea abies Karst., including selfed and open‐pollinated progenies of four different mother trees are presented. The measurements were made when the trees had reached an age of 61 years. Pair‐wise comparisons between selfed and open‐pollinated progenies of different mother trees with respect to tree height, breast‐height diameter, and trunk volume revealed that the selfed progenies suffered severely from inbreeding depression. © 1973 Mendelian Society of Lund