Population Genetics of the Homomorphic Self-incompatibility Polymorphisms in Flowering Plants

By M. J. Lawrence. 2000

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Integrating micro- and macroevolutionary processes in community ecology (2003, background): “Different taxa show different rates of evolution and maintenance of self-incompatibility alleles (Lawrence 2000); these differences can be related to the type of incompatibility mechanism (e.g., sporophytic vs. gametophytic), which is usually correlated with taxonomic affiliation.”
The Ecological and Evolutionary Consequences of Clonality for Plant Mating (2010, background): “In self-incompatible populations, negative frequency-dependent selection promotes the maintenance of a large number of S-alleles within populations (Lawrence 2000).”
Low S‐allele numbers limit mate availability, reduce seed set and skew fitness in small populations of a self‐incompatible plant (2010, background): “The estimated number of S-alleles in large populations ofR. leptorrhynchoides (up to 22) are high and broadly in line with estimates reported from other species with sporophytic SI systems (for review see Lawrence 2000).”