Abstract
When maternal parent and progeny genotypes are known, inferences can be drawn about the paternal contribution to the mating event. A mating event is defined here as the fertilisation of an egg. With a diallelic locus and homozygous seed parent, mating events may be classified as detected outcrosses or as ambiguous mating events (those due to either self-fertilisation or outcrossing). When mating events are classified and when seed are sampled at two or more hierarchical levels within populations (e.g., seeds within fruits, fruits within plants) one may estimate the degree of correlation between classes of mating events at a given hierarchical level relative to that at others. Such an analysis applied to progeny from an experimental population of the common morning glory shows that there is correlation between classes of mating events within fruits, but not between fruits. In an experimental population of white spruce, the analysis reveals a low degree of correlation between classes of mating events both within and between cones. The results are discussed in relation to the pollination systems of the plants and to the problem of estimating genetic parameters from family-structured data.
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Schoen, D. Correlation between classes of mating events in two experimental plant populations. Heredity 55, 381–385 (1985). https://doi.org/10.1038/hdy.1985.121
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DOI: https://doi.org/10.1038/hdy.1985.121
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