Abstract
This study investigated the genetic structure of a population of the highly outcrossed perennial shrub, Banksia spinulosa. Three variable loci were detected; Pgm1, Adh1 and Pgi2. Some genetic differentiation was detected in the population, and as a whole it deviated from a panmictic unit. This primarily resulted from the behaviour of Pgi2. This locus exhibited a large deficit of heterozygotes, possibly in association with a Wahlund effect. However, deviations from panmixia were small compared with species which are predominantly self-fertilizing, and estimates of gene flow indicated that the movement of genes occurs over a fairly wide area. This study provides the first description of spatial genetic variability within a population of Banksia spinulosa.
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D. Ayre and R. Whelan are thanked for comments on an earlier draft of the manuscript. This is contribution number 097 of the EGC at the University of Wollon-gong.
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Carthew, S. Population genetic structure of Banksia spinulosa. Heredity 70, 566–573 (1993). https://doi.org/10.1038/hdy.1993.83
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DOI: https://doi.org/10.1038/hdy.1993.83
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