Peroxidase allozyme differentiation among successional stands of ponderosa pine [Genetic variation, Colorado]

Genetic variation of a peroxidase locus from mature ponderosa pine needles has been surveyed among four successional stands on the Shanahan Mesa near Boulder, Colorado. The recent colonization of this mesa by ponderosa pine can be documented by historical reports and tree cores. Allozyme differentia...

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Bibliographic Details
Published in:The American midland naturalist 1984-07, Vol.112 (1), p.43-49
Main Authors: Beckman, J.S, Mitton, J.B
Format: Article
Language:English
Subjects:
Alleles
Coniferous forests
Evolutionary genetics
Gene frequency
Genetic loci
Genetic variation
Mesas
Pinus ponderosa
Population genetics
Tree stumps
Trees
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Summary:Genetic variation of a peroxidase locus from mature ponderosa pine needles has been surveyed among four successional stands on the Shanahan Mesa near Boulder, Colorado. The recent colonization of this mesa by ponderosa pine can be documented by historical reports and tree cores. Allozyme differentiation was observed on the Shanahan Mesa between two recently colonized, open-grown stands and a shaded secondary growth stand, which parallels patterns of differentiation found in nearby mountain populations. At a transitional stand in the middle of the mesa, genetic differences also occurred between older open-grown trees and shaded younger trees. Environmental effects from canopy closure appear to have affected peroxidase differentiation among these successional stands.
ISSN:0003-0031
1938-4238
DOI:10.2307/2425455