Geographic Patterns Of Allozymic Variation In Loblolly Pine

Haploid maternal gametophytes from more than 200 loblolly pine (Pinus taeda L.) trees sampled from eight geographic provenances were assayed for six enzyme systems. Ten allozyme loci Caere identified having an average of 3.6 alleles per locus. Results indicated considerable genetic differentiation has evolved within the loblolly pine species. Structuring of the species genetic variation may be a result of restriction to gene flow and varying selection regimes over the natural range of loblolly pine. Additional keywords: Isozymes, environmental variation, gene frequency, regression, correlation.


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Author(s): L. Zack Florence, George Rink

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1979

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