Theoretical and Applied Genetics

, Volume 69, Issue 5, pp 609–615

Estimation of gene flow into two seed orchards of loblolly pine (Pinus taeda L.)

  • S. T. Friedman
  • W. T. Adams

DOI: 10.1007/BF00251112

Cite this article as:
Friedman, S.T. & Adams, W.T. Theoret. Appl. Genetics (1985) 69: 609. doi:10.1007/BF00251112


Multilocus allozyme markers, which were present in background stands but not in two seed orchards, enabled estimation of gene flow into two seed orchards of loblolly pine. Estimates averaged 36% in two orchards over three years. When pollen pool frequencies in the background stands were used rather than gene frequencies in the non-orchard trees, the estimates averaged 60%. In one year, trees in the row on the edge of one orchard received significantly more pollen from background stands. Estimates of gene flow between the two 2-ha orchards average 10%. Implications of the observed levels of gene flow are discussed in terms of population genetics and seed orchard management.

Key words

Allozymes Gene flow Loblolly pine Pollen contamination Seed orchards 

Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • S. T. Friedman
    • 1
  • W. T. Adams
    • 2
  1. 1.U.S.D.A. Forest ServicePrinevilleUSA
  2. 2.Oregon State UniversityCorvallisUSA