Journal
GENOME
Volume 44, Issue 3, Pages 336-344Publisher
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/gen-44-3-336
Keywords
chloroplast microsatellites; isozymes; RAPDs; gene flow; pollen flow
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Genetic variation was compared between uniparentally-inherited (chloroplast simple sequence repeats, cpSSRs) vs. biparentally-inherited (isozyme and random amplified polymorphic DNA, RAPD) genetic markers in Douglas-fir (Pseudotsuga mensiezii) from British Columbia. Three-hundred twenty-three individuals from 11 populations were assayed. In Douglas-fir, the cpSSR primer sites were well-conserved relative to Pinus thunbergii (11 of 17 loci clearly amplified), but only 3 loci were appreciably polymorphic. At these cpSSR loci, we found an unexpectedly low level of polymorphism within populations, and no genetic differentiation among populations. By contrast, the nuclear markers showed variation typical of conifers, with significant among-population differentiation. This difference is likely the outcome of both historical factors and high pollen dispersal.
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