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.

Year: 1986

Issued by: National Capital Region

Catalog ID: 32588

Language: English

Series: Information Report (Petawawa)

Availability: PDF (download)

Mark record

Abstract

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 d├ęcennale en hauteur de familles d'├ępinettes noires obtenues par pollinisation libre en Ontario (French)