Abstract
The breeding system, genotypic structure, and degree of spatial genetic differentiation were investigated in a population of the perennial grass Cynosurus cristatus using four polymorphic allozyme loci. Both incompatability studies and analysis of progeny genotype arrays gave outcrossing rate estimates of t = 0·98, not significantly different from random mating. Levels of inbreeding and of gametic disequilibrium between allozyme loci were negligible. Genetic differentiation among adult subpopulations was very low (GST = 1·14 per cent). Among pollen pool subpopulations genetic differentiation was even lower (GST = 0·28 per cent). It is concluded that substantial pollen flow prevents the development of significant genetic differentiation through random genetic drift in different areas of the same population.
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Ennos, R. The mating system and genetic structure in a perennial grass, Cynosurus cristatus L.. Heredity 55, 121–126 (1985). https://doi.org/10.1038/hdy.1985.78
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DOI: https://doi.org/10.1038/hdy.1985.78
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