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The Journal of Heredity 1993:84(3):206-211
© 1993 The American Genetic Association 84:206-211

research-article

Genetic Control of Isoenzymes in Sitka Spruce

K. Chaisurisri, and Y. A. El-Kassaby

The Forest Sciences Department, Faculty of Forestry, University of British Columbia Vancouver, Canada

Address reprint requests to Dr. Y. A. El-Kassaby at Canadian Pacific Forest Products Ltd., Saanich Forestry Centre, 8067 East Saanich Rd., R.R. #1, Saanichton, B.C. VOS 1M0 Canada.

Abstract

Allozyme variants were studied for 14 enzyme systems in seed tissues of Sitka spruce (Picea sitchensis (Bong.) Carr.) from 134 seed-orchard clones. A total of 16 enzyme zones was consistently identified, 14 of which were polymorphic loci. Significant departure from the expected 1:1 segregation ratio was observed in six of 24 allelic combinations. No linkage was observed for 16 doubly heterozygous combinations. However, lack of independent segregation between two sets of loci (PGM-1 : PGM-2 and PGM-2 : 6PG-1) was attributed to their apparent linkage.


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