SELF-FERTILITY IN MARITIME AND ZINC MINE POPULATIONS OF <i>ARMERIA MARITIMA</i>
 (MILL.) WILLD.

Lefebvre, Christian

doi:10.1111/j.1558-5646.1970.tb01792.x

Cited by 38 publications

(20 citation statements)

References 7 publications

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“…Several examples demonstrate that self-incompatibility and inbreeding depression have not proven to be insurmountable barriers to the evolution of self-fertility (Davies and Young, 1966;Thompson and Taylor, 1966;Antonovics, 1968;Lefebvre, 1970;Ronald and Ascher, 1975;Rick et a!., 1979).…”

Section: Results (I) Genetic Structurementioning

confidence: 99%

“…** Present Address: Department of Plant Sciences, University of Western Ontario, London, Ontario, Canada, N6A 5B7. Antonovics, 1968;Lefebvre, 1970;Ronald and Ascher, 1975;de Nettancourt, 1977;Wu and Jam, 1980;Kress, 1983). The few seeds set by a single colonizing individual may lead to a breakdown in the self-incompatible mechanism, providing that self-fertility is heritable and inbreeding depression does not prevent the establishment of seedlings from self-pollinated seeds (Schemske, 1983;Schoen, 1983).…”

Section: Introductionmentioning

confidence: 99%

“…Outcrossing species with disjunct populations showing a higher frequency of selfing suggest that there may have been a breakdown of self-incompatibility during the colonization process (Lloyd, 1980). For example, selfincompatible species colonizing and adapting to contaminated mine soils exhibited a higher rate of self-fertility compared to non-tolerant populations of each species (Antonovics, 1968;Lefebvre, 1970).…”

Section: Introductionmentioning

confidence: 99%

“…Selfing in the tolerant population is an effective barrier to gene flow from adjacent non-tolerant populations (Antonovics, 1968), but self-fertility may have evolved during the colonization of contaminated soils by a small number of founding individuals (Lefebvre, 1970). Self-fertility would ensure some seed set in the absence or low probability of cross pollination during the early stages of colonization (Baker, 1955;1967).…”

Section: Introductionmentioning

confidence: 99%

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The mating system and genetic structure in a disjunct population of the seaside goldenrod Solidago sempervirens L. (Asteraceae)

Innes

Hermanutz

1988

Heredity

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Three polymorphic enzyme loci were used to study mating system and genetic structure in a disjunct population of the seaside goldenrod, Solidago sempervirens, growing near Windsor, Ontario to determine if self-fertility played a role in the initial colonization of this area. Observations on genotypic variation in the adult populations and the analysis of progeny arrays showed no evidence for inbreeding with estimates of outcrossing rate not significantly different from t = 1.00 for both the Windsor population and a population from the main distribution of the species. Colonization of southern Ontario by S. sempervirens probably involved either a single colonization event consisting of several individuals with different self-incompatibility genotypes or a number of separate colonizing episodes.

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Section: Results (I) Genetic Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The mating system and genetic structure in a disjunct population of the seaside goldenrod Solidago sempervirens L. (Asteraceae)

Innes

Hermanutz

1988

Heredity

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“…Is the reduced genetic variability due to stronger competition between clones in normal soil than in the toxic habitat? With regard to genotypic structure two mechanisms which reduce gene flow have been described: phenological drift (McNeilly and Antonovics, 1968) and increase in self-fertilisation (Antonovics, 1968, Lefebvre 1970. Therefore, one would expect that a population from toxic zones, which has departed from panmixia, would present a more or less important heterozygote deficit compared to an adjacent normal population.…”

Section: Introductionmentioning

confidence: 99%

Genetic variation between and within populations of a perennial grass: Arrhenatherum elatius

et al. 1990

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Three pairs of adjacent populations of Arrhenatherum elatius were studied both for their genetic diversity and for their genotypic structure. Each pair consisted of one population on a normal soil type and the other on spoil from mining.Using morphological characters as well as allozyme markers, the genetic diversity in populations on toxic soils (mining spoil) was found to be higher than in populations in normal pasture. This suggests that the tolerant populations have been built up from a large number of tolerant genotypes emanating from normal pasture populations in which tolerance genes are not uncommon. The higher genetic diversity of the tolerant population has then been maintained by the spatial heterogeneity of toxic habitats, or less intense selective forces of biotic origin (e.g. intraspecific competition) or by a more open breeding system. Variations in allozymes gave interesting clues. No clear cut differences in the genetic structure between pairs of populations were found, but there was a higher heterozygote deficit in denser populations.This might arise from inbreeding because of a more limited gene flow in dense populations. The higher genetic diversity of sparse populations on toxic soil might partly result from the effectively greater gene flow into these populations in which individuals must trap pollen from longer distances than do individuals in dense populations.

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Metal‐Tolerant Plants: An Evolutionary Perspective

Macnair

Baker

1994

Plants and the Chemical Elements

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SELF-FERTILITY IN MARITIME AND ZINC MINE POPULATIONS OF ARMERIA MARITIMA (MILL.) WILLD.

Cited by 38 publications

References 7 publications

The mating system and genetic structure in a disjunct population of the seaside goldenrod Solidago sempervirens L. (Asteraceae)

The mating system and genetic structure in a disjunct population of the seaside goldenrod Solidago sempervirens L. (Asteraceae)

Genetic variation between and within populations of a perennial grass: Arrhenatherum elatius

Metal‐Tolerant Plants: An Evolutionary Perspective

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