Regional heterogeneity and gene flow maintain variance in a quantitative trait within populations of lodgepole pine

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dc.creatorYeaman, S
dc.creatorJarvis, Andy
dc.date2006-07-07
dc.date2014-10-02T08:33:06Z
dc.date2014-10-02T08:33:06Z
dc.date.accessioned2026-06-27T14:47:04Z
dc.descriptionGenetic variation is of fundamental importance to biological evolution, yet we still know very little about how it is maintained in nature. Because many species inhabit heterogeneous environments and have pronounced local adaptations, gene flow between differently adapted populations may be a persistent source of genetic variation within populations. If this migration selection balance is biologically important then there should be strong correlations between genetic variance within populations and the amount of heterogeneity in the environment surrounding them. Here, we use data from a long-term study of 142 populations of lodgepole pine (Pinus contorta) to compare levels of genetic variation in growth response with measures of climatic heterogeneity in the surrounding region. We find that regional heterogeneity explains at least 20% of the variation in genetic variance, suggesting that gene flow and heterogeneous selection may play an important role in maintaining the high levels of genetic variation found within natural populations.
dc.identifierhttps://hdl.handle.net/10568/44020
dc.identifier.urihttp://hdl.handle.net/123456789/88310
dc.languageen
dc.publisherRoyal Society
dc.rightsOpen Access
dc.subjectpinus contorta
dc.subjectgenetic resources
dc.subjectgenetic variation
dc.subjectgene flow
dc.subjectclimate change
dc.subjectpopulation genetics
dc.subjectrecursos genéticos
dc.subjectvariación genética
dc.subjectflujo genético
dc.subjectcambio climático
dc.subjectgenética de poblaciones
dc.titleRegional heterogeneity and gene flow maintain variance in a quantitative trait within populations of lodgepole pine
dc.typeJournal Article

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Centro Internacional de Agricultura Tropical (CIAT)