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Article: Genetic diversity in three colonizing orchids with contrasting mating systems

TitleGenetic diversity in three colonizing orchids with contrasting mating systems
Authors
KeywordsColonizing Orchids
Eulophia Sinensis
Mating Systems
Orchidaceae
Population Genetics
Spiranthes Hongkongensis
Zeuxine Strateumatica
Issue Date1997
PublisherBotanical Society of America, Inc (Columbus), Business Office. The Journal's web site is located at http://www.amjbot.org/
Citation
American Journal Of Botany, 1997, v. 84 n. 2, p. 224-232 How to Cite?
AbstractComparative studies on the genetic attributes of colonizing orchids with diverse mating systems are lacking in the literature. Eulophia sinensis, Spiranthes hongkongensis, and Zeuxine strateumatica are colonizing orchids that frequently occupy newly created habitats in Hong Kong. Mating system studies showed that E. sinensis is a self-compatible but pollination dependent outcrossing species, S. hongkongensis is a self-pollinating taxon, and Z. strateumatica is apomictic. Population genetic attributes of these orchid species were investigated. Despite their contrasting mating systems, electrophoretic surveys revealed a striking lack of allozyme variation, both within and among populations, in all three species. However, gene duplications were evident in these species, due to their likely polyploid origins. The percentage of duplicate loci exhibiting 'fixed heterozygosity' was 10, 21.4, and 20% in E. sinensis, S. hongkongensis, and Z. strateumatica, respectively. The genetic attributes of these orchids are compared to those found in other colonizing plant species.
Persistent Identifierhttp://hdl.handle.net/10722/177181
ISSN
2015 Impact Factor: 2.811
2015 SCImago Journal Rankings: 1.459
References

 

DC FieldValueLanguage
dc.contributor.authorSun, Men_US
dc.date.accessioned2012-12-04T02:30:16Z-
dc.date.available2012-12-04T02:30:16Z-
dc.date.issued1997en_US
dc.identifier.citationAmerican Journal Of Botany, 1997, v. 84 n. 2, p. 224-232en_US
dc.identifier.issn0002-9122en_US
dc.identifier.urihttp://hdl.handle.net/10722/177181-
dc.description.abstractComparative studies on the genetic attributes of colonizing orchids with diverse mating systems are lacking in the literature. Eulophia sinensis, Spiranthes hongkongensis, and Zeuxine strateumatica are colonizing orchids that frequently occupy newly created habitats in Hong Kong. Mating system studies showed that E. sinensis is a self-compatible but pollination dependent outcrossing species, S. hongkongensis is a self-pollinating taxon, and Z. strateumatica is apomictic. Population genetic attributes of these orchid species were investigated. Despite their contrasting mating systems, electrophoretic surveys revealed a striking lack of allozyme variation, both within and among populations, in all three species. However, gene duplications were evident in these species, due to their likely polyploid origins. The percentage of duplicate loci exhibiting 'fixed heterozygosity' was 10, 21.4, and 20% in E. sinensis, S. hongkongensis, and Z. strateumatica, respectively. The genetic attributes of these orchids are compared to those found in other colonizing plant species.en_US
dc.languageengen_US
dc.publisherBotanical Society of America, Inc (Columbus), Business Office. The Journal's web site is located at http://www.amjbot.org/en_US
dc.relation.ispartofAmerican Journal of Botanyen_US
dc.subjectColonizing Orchidsen_US
dc.subjectEulophia Sinensisen_US
dc.subjectMating Systemsen_US
dc.subjectOrchidaceaeen_US
dc.subjectPopulation Geneticsen_US
dc.subjectSpiranthes Hongkongensisen_US
dc.subjectZeuxine Strateumaticaen_US
dc.titleGenetic diversity in three colonizing orchids with contrasting mating systemsen_US
dc.typeArticleen_US
dc.identifier.emailSun, M: meisun@hkucc.hku.hken_US
dc.identifier.authoritySun, M=rp00779en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0030813753en_US
dc.identifier.hkuros21783-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030813753&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume84en_US
dc.identifier.issue2en_US
dc.identifier.spage224en_US
dc.identifier.epage232en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridSun, M=7403181447en_US

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