Canadian Forest Service Publications
Ten-year height growth of open-pollinated black spruce families in Ontario. 1986. Boyle, T.J.B. Canadian Forestry Service, Petawawa National Forestry Institute, Chalk River, Ontario. Information Report PI-X-61. 25 p.
Issued by: National Capital Region
Catalog ID: 32588
Series: Information Report (Petawawa)
Availability: PDF (download)
Results of 10-year height growth in three series of open-pollinated progeny tests of black spruce (Picea Marinana (Mill.) B.S.P.), in three site regions of northern Ontario, are presented. Estimates of narrow sense heritability from individual test sites ranges from 0 to 0.399 for single trees and from 0 to 0.896 for families, with averages of 0.169 and 0.663 respectively. Estimates from multi-location analyses ranged from 0.099 to 0.152, with an average of 0.124 for single trees, and from 0.836 to 0.930, with an average of 0.884 for families. The family x environment interaction was significant in all three series.
By means of an overlapping cluster analysis method, four or five genetic breeding zones were delineated for each site region. Proposals are made for breeding zones which, as far as possible, take account of both genetic breeding zones and administrative boundaries.
Also available under the title:
Croissance décennale en hauteur de familles d'épinettes noires obtenues par pollinisation libre en Ontario (French)