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

Isozyme Variability in Central Ontario Jack Pine

Megagametophyte isozyme analysis of 320 jack pine trees from 32 stands in 8 central Ontario townships indicated a high level of genetic variability as measured by average homozygosity (H=0.15). Of 27 isozyme loci detected in 13 enzyme systems, 20 loci were polymorphic. The proportions of average heterozygosity attributed to differences among townships and differences among stands were 2.5% and 6.7% respectively. Approximately 1.5% and 5.2% of the total genetic variability detected could be attributed to among-township and amongstand differences. The high level of isozyme variability found within a small geographic area of jack pine was similar to that found in other conifer species sampled over a much wider area, and has implications for operational jack pine breeding programs.


Download this file:

PDF document Download this file — PDF document, 1754Kb

Details

Author(s): Roy G. Danzmann, George P. Buchert

Publication: Tree Improvement and Genetics - Northeastern Forest Tree Improvement Conference - 1982

Section: Session 4