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Article: Population genetic structure of yellow starthistle (Centaurea solstitialis), a colonizing weed in the western United States

TitlePopulation genetic structure of yellow starthistle (Centaurea solstitialis), a colonizing weed in the western United States
Authors
KeywordsAllozyme variation
Centaurea solstitialis
Population genetics
Weed colonization
Yellow starthistle
Issue Date1997
PublisherN R C Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cjb
Citation
Canadian Journal Of Botany, 1997, v. 75 n. 9, p. 1470-1478 How to Cite?
AbstractYellow starthistle (Centaurea solstitialis L.), a diploid annual native to the Mediterranean region, has rapidly colonized a variety of disturbed habitats in the western United States since its accidental introduction in the mid-19th century. Population genetic attributes were investigated in association with the species' colonizing success. Allozyme electrophoretic surveys were conducted for a total of 22 populations from California, Washington, and Idaho, including the southern and northern extremes of its distribution in the Pacific states. High levels of allozyme variation exist within populations, on average 43% of loci were polymorphic, with 2.88 alleles, a heterozygosity of 0.38, and gene diversity of 0.35 per polymorphic locus. At the species level, 56% of loci were polymorphic, with 2.85 alleles per locus, and the total gene diversity was 0.172. With the exception of a marginal population San Diego, the level of genetic diversity was similarly high in all regions. Lack of interpopulation genetic divergence (G(ST) = 0.095) suggests that majority of the colonial populations were founded by a large number of genotypes and that high levels of gene flow may exist between local populations (Nm = 2.38). Information on genetic structure of the weed populations may aid our understanding of the species' colonizing ability in North America and is important for predicting the effectiveness of biological control program.
Persistent Identifierhttp://hdl.handle.net/10722/42262
ISSN
2009 Impact Factor: 1.397

 

DC FieldValueLanguage
dc.contributor.authorSun, Men_HK
dc.date.accessioned2007-01-08T02:32:58Z-
dc.date.available2007-01-08T02:32:58Z-
dc.date.issued1997en_HK
dc.identifier.citationCanadian Journal Of Botany, 1997, v. 75 n. 9, p. 1470-1478en_HK
dc.identifier.issn0008-4026en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42262-
dc.description.abstractYellow starthistle (Centaurea solstitialis L.), a diploid annual native to the Mediterranean region, has rapidly colonized a variety of disturbed habitats in the western United States since its accidental introduction in the mid-19th century. Population genetic attributes were investigated in association with the species' colonizing success. Allozyme electrophoretic surveys were conducted for a total of 22 populations from California, Washington, and Idaho, including the southern and northern extremes of its distribution in the Pacific states. High levels of allozyme variation exist within populations, on average 43% of loci were polymorphic, with 2.88 alleles, a heterozygosity of 0.38, and gene diversity of 0.35 per polymorphic locus. At the species level, 56% of loci were polymorphic, with 2.85 alleles per locus, and the total gene diversity was 0.172. With the exception of a marginal population San Diego, the level of genetic diversity was similarly high in all regions. Lack of interpopulation genetic divergence (G(ST) = 0.095) suggests that majority of the colonial populations were founded by a large number of genotypes and that high levels of gene flow may exist between local populations (Nm = 2.38). Information on genetic structure of the weed populations may aid our understanding of the species' colonizing ability in North America and is important for predicting the effectiveness of biological control program.en_HK
dc.format.extent4835557 bytes-
dc.format.extent539922 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.languageengen_HK
dc.publisherN R C Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cjben_HK
dc.relation.ispartofCanadian Journal of Botanyen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsCanadian Journal of Botany. Copyright © N R C Research Press.en_HK
dc.subjectAllozyme variationen_HK
dc.subjectCentaurea solstitialisen_HK
dc.subjectPopulation geneticsen_HK
dc.subjectWeed colonizationen_HK
dc.subjectYellow starthistleen_HK
dc.titlePopulation genetic structure of yellow starthistle (Centaurea solstitialis), a colonizing weed in the western United Statesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0008-4026&volume=75&issue=9&spage=1470&epage=1478&date=1997&atitle=Population+genetic+structure+of+yellow+starthistle+(Centaurea+solstitialis),+a+colonizing+weed+in+the+western+United+Statesen_HK
dc.identifier.emailSun, M: meisun@hkucc.hku.hken_HK
dc.identifier.authoritySun, M=rp00779en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.scopuseid_2-s2.0-0031441161en_HK
dc.identifier.hkuros22575-
dc.identifier.volume75en_HK
dc.identifier.issue9en_HK
dc.identifier.spage1470en_HK
dc.identifier.epage1478en_HK
dc.publisher.placeCanadaen_HK
dc.identifier.scopusauthoridSun, M=7403181447en_HK

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