Journal
ANNUAL REVIEW OF ECOLOGY, EVOLUTION, AND SYSTEMATICS, VOL 41
Volume 41, Issue -, Pages 193-213Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev.ecolsys.110308.120258
Keywords
clonal propagation; geitonogamy; inbreeding depression; pollination and mating; sexual systems; somatic mutations
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Many flowering plants exhibit dull reproductive modes, producing both sexual and asexual offspring The commonest form of asexual reproduction is clonal growth, in which vegetative modules (ramets) are produced by the parental genotype (genet) In plants, sexual and asexual reproduction usually occur simultineously, and this can lead to allocation trade-offs and antagonism between reproductive modes Our review considers the ecological and evolutionary consequences of functional interactions between clonal reproduction and pollination and mating Clonal reproduction is commonly associated with mass flowering, restricted pollen dispersal, and geitonogamous self-pollination, processes that can result in inbreeding depression and pollen discounting We review evidence for the correlated evolution of clonality and sexual systems, particularly self-incompatibility, and Identify several floral mechanisms that function to reduce mating costs by limiting selfing and pollen discounting We conclude by discussing the loss of sexuality in clonal plants and consider the genetic and environmental basis of sexual dysfunction
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