Canadian Forest Service Publications

Mating system in natural populations of eastern white pine in Quebec. 1995. Beaulieu, J.; Simon, J.-P. Can. J. For. Res. 25: 1697-1703.

Year: 1995

Issued by: Laurentian Forestry Centre

Catalog ID: 16699

Language: English

CFS Availability: PDF (request by e-mail)

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The mating system in two natural eastern white pine (Pinus strobus L.) populations in Quebec was investigated. These populations contrasted in density and age. The single-locus as well as multilocus outcrossing rate estimates were obtained from four polymorphic enzyme loci using open-pollinated progeny data. The single-locus outcrossing rates ranged from 0.934 to 1.110 with a mean of 1.026 in one population and varied from 0.862 to 1.186 with a mean of 1.007 in the other population. Multilocus estimates exceeded 1.0 in both populations, suggesting the possible absence of self-fertilization. Pollen pool gene frequencies were homogeneous in one population and heterogeneous in the other. The positive or less negative F-values found in the filial populations compared with those observed in the parental populations suggest the presence of a family structure favouring consanguineous matings.