Population genetics of hydrophilous angiosperms

Title:
Population genetics of hydrophilous angiosperms
Authors:
Laushman, Roger H.
Abstract:
Comparisons between genetic variation and life history and ecological characteristics have been produced for over 400 plant species since the advent of starch gel electrophoresis. Knowledge of how aquatic life histories relate to population genetic structure is lacking, however. Four hydrophilous species - Zostera marina L., Vallisneria americana Michx., Ceratophyllum demersum L., and Ceratophyllum echinatum Gray - have been studied using allozyme estimates of variation within and among populations. At the species level, the percent of polymorphic loci is equal to, or higher than, the average reported for all plant species. At the population level, however, hydrophilous taxa have lower percent of polymorphic loci, fewer alleles per locus, and lower levels of heterozygosity than non-hydrophiles. Except for Z. marina, hydrophilous species show much greater partitioning of variation among populations than non-hydrophiles, particularly when compared with anemophilous species. Explanations for these patterns include limited sexuality (Ceratophyllum), extensive clonal spread (all four species), and the greater isolation of freshwater populations (lakes as islands) relative to most terrestrial species and to coastal species such as Z. marina.
Citation:
Laushman, R.H. 1993. "Population genetics of hydrophilous angiosperms." Aquatic Botany 44(2-3): 147-158.
Publisher:
Elsevier
DATE ISSUED:
1993-01
Department:
Biology
Type:
Article
PUBLISHED VERSION:
10.1016/0304-3770(93)90069-9
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/0304377093900699
PERMANENT LINK:
http://hdl.handle.net/11282/596701

Full metadata record

DC FieldValue Language
dc.contributor.authorLaushman, Roger H.en
dc.date.accessioned2016-02-18T16:48:13Zen
dc.date.available2016-02-18T16:48:13Zen
dc.date.issued1993-01en
dc.identifier.citationLaushman, R.H. 1993. "Population genetics of hydrophilous angiosperms." Aquatic Botany 44(2-3): 147-158.en
dc.identifier.issn0304-3770en
dc.identifier.urihttp://hdl.handle.net/11282/596701en
dc.description.abstractComparisons between genetic variation and life history and ecological characteristics have been produced for over 400 plant species since the advent of starch gel electrophoresis. Knowledge of how aquatic life histories relate to population genetic structure is lacking, however. Four hydrophilous species - Zostera marina L., Vallisneria americana Michx., Ceratophyllum demersum L., and Ceratophyllum echinatum Gray - have been studied using allozyme estimates of variation within and among populations. At the species level, the percent of polymorphic loci is equal to, or higher than, the average reported for all plant species. At the population level, however, hydrophilous taxa have lower percent of polymorphic loci, fewer alleles per locus, and lower levels of heterozygosity than non-hydrophiles. Except for Z. marina, hydrophilous species show much greater partitioning of variation among populations than non-hydrophiles, particularly when compared with anemophilous species. Explanations for these patterns include limited sexuality (Ceratophyllum), extensive clonal spread (all four species), and the greater isolation of freshwater populations (lakes as islands) relative to most terrestrial species and to coastal species such as Z. marina.en
dc.language.isoen_USen
dc.publisherElsevieren
dc.identifier.doi10.1016/0304-3770(93)90069-9en
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/0304377093900699en
dc.subject.departmentBiologyen_US
dc.titlePopulation genetics of hydrophilous angiospermsen_US
dc.typeArticleen
dc.identifier.journalAquatic Botanyen
dc.subject.keywordPlant populationsen_US
dc.subject.keywordPollinationen_US
dc.subject.keywordEvolutionen_US
dc.identifier.volume44en_US
dc.identifier.issue2-3en_US
dc.identifier.startpage147en_US
dc.rightsArchived with thanks to Aquatic Botanyen
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