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Evolution of sex: The evolution of plant sexual diversity
- S. Barrett
- BiologyNature reviews genetics
- 1 April 2002
The integration of phylogenetic, ecological and population-genetic studies have provided new insights into the selective mechanisms that are responsible for major evolutionary transitions between reproductive modes.
A comparative analysis of pollen limitation in flowering plants
The results suggest that the influence of phylogenetic history on the intensity of pollen limitation was not particularly strong, and significant variation in the degree of pollen limitations was demonstrated among seven angiosperm families suggesting some phylogenetic component to the phenomenon.
Wind of change: new insights on the ecology and evolution of pollination and mating in wind-pollinated plants.
These findings challenge the explanation that the evolution of few ovules in wind-pollinated flowers is associated with low pollen loads and it is proposed that geitonogamous selfing may alleviate pollen limitation in many wind- pollinated plants with unisexual flowers.
The Reproductive Biology and Genetics of Island Plants
- S. Barrett
- 29 June 1996
Stochastic forces play a major role in governing patterns of genetic variation in island populations and appear to be a factor involved in the evolution of sexual dimorphisms.
Heterostylous Genetic Polymorphisms: Model Systems for Evolutionary Analysis
- S. Barrett
Heterostyly is reported from approximately 25 angiosperm families and has usually been viewed as a floral device that promotes outcrossing, hence reducing the harmful effects of close inbreeding in plant populations.
The Ecological and Evolutionary Consequences of Clonality for Plant Mating
Evidence for the correlated evolution of clonality and sexual systems, particularly self-incompatibility, is reviewed, and several floral mechanisms that function to reduce mating costs by limiting selfing and pollen discounting are identified.
New Insights on Heterostyly: Comparative Biology, Ecology and Genetics
Although the patterns of inheritance of the style morphs are well established in diverse taxa, the identity, number and organization of genes controlling the heterostylous syndrome are unknown, despite recent progress.
Plant reproductive systems and evolution during biological invasion
Evidence is provided that evolutionary modifications to reproductive systems promote the colonizing ability of invading populations and that reproductive timing is an important target of selection during range expansion.
Common garden comparisons of native and introduced plant populations: latitudinal clines can obscure evolutionary inferences
The results indicate that unrecognized geographic clines in phenotypic traits can confound inferences about the causes of evolutionary change in invasive plants.
PERSPECTIVE: PURGING THE GENETIC LOAD: A REVIEW OF THE EXPERIMENTAL EVIDENCE
Support is provided for purging of the genetic load by collating empirical tests of rebounds in fitness-related traits with inbreeding in animals and plants by examining three measures of fitness-component variation with serial generations of inbreeding.