POLLINATION SYSTEMS AS ISOLATING MECHANISMS IN ANGIOSPERMS

@article{Grant1949POLLINATIONSA,
  title={POLLINATION SYSTEMS AS ISOLATING MECHANISMS IN ANGIOSPERMS},
  author={Verne Grant},
  journal={Evolution},
  year={1949},
  volume={3}
}
  • V. Grant
  • Published 1 March 1949
  • Biology
  • Evolution
82 The opinion, once held rather widely by biologists, that related species are generally, if not universally, separated by barriers to reproduction involving incompatibility and hybrid sterility has undergone some qualifications in recent years. The modification of the time-honored view has been in part a consequence of the discovery that species of higher plants, which occupy the same range in nature without evident hybridization, may nevertheless yield fertile progeny when crossed in the… 

REPRODUCTIVE ISOLATION IN ASCLEPIAS: LOCK AND KEY HYPOTHESIS RECONSIDERED

  • S. KephartC. Heiser
  • Environmental Science
    Evolution; international journal of organic evolution
  • 1980
The purpose of the following study was to examine the importance of the proposed mechanical factors for three sympatric species of Asclepias by determining whether interspecific pollination occurred in natural and experimental populations of A. incarnata L, A. verticillata L., and A. syriaca.

THE EXPLOITATION OF POLLINATORS BY SPECIES AND HYBRIDS OF PHLOX

  • D. Levin
  • Biology
    Evolution; international journal of organic evolution
  • 1970
The floral morphology of the species and hybrids shows that there are no mechanical barriers to pollen exchange between the entities, and the existence of hybrids attests to the ability of pollinators to effectively transport pollen among the phloxes.

NATURAL SELECTION AND THE DIFFERENTIATION OF ANGIOSPERM FAMILIES

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Adaptive Radiation of Reproductive Characteristics in Angiosperms, II: Seeds and Seedlings

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Pollination, angiosperm speciation, and the nature of species boundaries

The time is ripe to initiate several lines of further research on pollination to understand whether different suites of pollinators can affect consistent selection in different directions on floral characteristics, and how reproductive isolation arises within and among populations, races, and higher taxa of plants.

An analysis of hybridization in Liatris

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Hybrid Origins of Plant Species

Experimental, theoretical, and empirical studies of homoploid hybrid speciation suggest that it is feasible, although evolutionary conditions are stringent, and hybridization may be important as a stimulus for the genetic or chromosomal reorganization envisioned in founder effect and saltational models of speciation.

HYBRIDIZATION, HOMOGAMY, AND SYMPATRIC SPECIATION

This paper develops the hypothesis that sympatric speciation may be less unlikely than previously considered on the basis of a realistic model suggested by recent studies of hybridization and floral isolation in a group of Penstemon species.

The Role of Animal Pollination in Plant Speciation: Integrating Ecology, Geography, and Genetics

It is concluded that floral isolation is rarely, if ever, sufficient to cause speciation on its own, but that it acts synergistically with other isolating mechanisms.

A pollinator shift explains floral divergence in an orchid species complex in South Africa.

A shift between bee and beetle pollination is identified as the main driver of floral divergence in an orchid species complex, andFloral scent and spur length appear to be key traits in mediating this evolutionary transition.
...

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