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Article: Reproductive biology of two sympatric species of Polyalthia (annonaceae) in Sri Lanka. II. Breeding systems and population genetic structure

TitleReproductive biology of two sympatric species of Polyalthia (annonaceae) in Sri Lanka. II. Breeding systems and population genetic structure
Authors
KeywordsAnnonaceae
Breeding system
ISSR
Pollination
Polyalthia
Issue Date2006
PublisherUniversity of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/IJPS
Citation
International Journal Of Plant Sciences, 2006, v. 167 n. 3, p. 495-502 How to Cite?
AbstractThe breeding systems of two sympatric species, Polyalthia coffeoides and Polyalthia korinti (Annonaceae), are assessed using a range of approaches, including controlled pollination experiments and analysis of inter-simple sequence repeat markers within and between populations. Natural (open) pollination resulted in similar levels of fruit formation as artificial cross-pollination, suggesting that pollinator availability is not a limiting factor in reproduction. Both species possess facultatively xenogamous breeding systems, with 33%-36% fruit formation in artificially crossed experiments and 17%-19% fruit formation following geitonogamy. Reduced fruit set following geitonogamy suggests partial self-incompatibility; this is supported by index of self-incompatibility values of ca. 0.5 in both species. Analysis of population genetic structure supports the hypothesis of a mixed but largely xenogamous mating system. Genetic diversity within populations was estimated to be ca. 80% and 66% of total genetic diversity for P. coffeoides and P. korinti, respectively. The levels of gene flow between populations were moderate (Nm = 2.033 for P. coffeoides and 0.970 for P. korinti), and genetic identity (I) values between populations within species were high. This possibly reflects the fragmentation of a previously more extensive population, correlated with the historical deforestation associated with crop cultivation and irrigation in Sri Lanka. © 2006 by The University of Chicago. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/44703
ISSN
2015 Impact Factor: 1.536
2015 SCImago Journal Rankings: 0.823
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorRatnayake, RMCSen_HK
dc.contributor.authorSu, YCFen_HK
dc.contributor.authorGunatilleke, IAUNen_HK
dc.contributor.authorWijesundara, DSAen_HK
dc.contributor.authorSaunders, RMKen_HK
dc.date.accessioned2007-10-30T06:08:14Z-
dc.date.available2007-10-30T06:08:14Z-
dc.date.issued2006en_HK
dc.identifier.citationInternational Journal Of Plant Sciences, 2006, v. 167 n. 3, p. 495-502en_HK
dc.identifier.issn1058-5893en_HK
dc.identifier.urihttp://hdl.handle.net/10722/44703-
dc.description.abstractThe breeding systems of two sympatric species, Polyalthia coffeoides and Polyalthia korinti (Annonaceae), are assessed using a range of approaches, including controlled pollination experiments and analysis of inter-simple sequence repeat markers within and between populations. Natural (open) pollination resulted in similar levels of fruit formation as artificial cross-pollination, suggesting that pollinator availability is not a limiting factor in reproduction. Both species possess facultatively xenogamous breeding systems, with 33%-36% fruit formation in artificially crossed experiments and 17%-19% fruit formation following geitonogamy. Reduced fruit set following geitonogamy suggests partial self-incompatibility; this is supported by index of self-incompatibility values of ca. 0.5 in both species. Analysis of population genetic structure supports the hypothesis of a mixed but largely xenogamous mating system. Genetic diversity within populations was estimated to be ca. 80% and 66% of total genetic diversity for P. coffeoides and P. korinti, respectively. The levels of gene flow between populations were moderate (Nm = 2.033 for P. coffeoides and 0.970 for P. korinti), and genetic identity (I) values between populations within species were high. This possibly reflects the fragmentation of a previously more extensive population, correlated with the historical deforestation associated with crop cultivation and irrigation in Sri Lanka. © 2006 by The University of Chicago. All rights reserved.en_HK
dc.format.extent180647 bytes-
dc.format.extent473841 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.languageengen_HK
dc.publisherUniversity of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/IJPSen_HK
dc.relation.ispartofInternational Journal of Plant Sciencesen_HK
dc.rightsInternational Journal of Plant Sciences. Copyright © University of Chicago Press.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectAnnonaceaeen_HK
dc.subjectBreeding systemen_HK
dc.subjectISSRen_HK
dc.subjectPollinationen_HK
dc.subjectPolyalthiaen_HK
dc.titleReproductive biology of two sympatric species of Polyalthia (annonaceae) in Sri Lanka. II. Breeding systems and population genetic structureen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1058-5893&volume=167&issue=3&spage=495&epage=502&date=2006&atitle=Reproductive+Biology+of+Two+Sympatric+Species+of+Polyalthia+(Annonaceae)+in+Sri+Lanka.+II.+Breeding+Systems+and+Population+Genetic+Structureen_HK
dc.identifier.emailSaunders, RMK: saunders@hkucc.hku.hken_HK
dc.identifier.authoritySaunders, RMK=rp00774en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1086/502716en_HK
dc.identifier.scopuseid_2-s2.0-33745051533en_HK
dc.identifier.hkuros116360-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33745051533&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume167en_HK
dc.identifier.issue3en_HK
dc.identifier.spage495en_HK
dc.identifier.epage502en_HK
dc.identifier.isiWOS:000238338300010-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridRatnayake, RMCS=55391274300en_HK
dc.identifier.scopusauthoridSu, YCF=7404456219en_HK
dc.identifier.scopusauthoridGunatilleke, IAUN=6602843852en_HK
dc.identifier.scopusauthoridWijesundara, DSA=7801390921en_HK
dc.identifier.scopusauthoridSaunders, RMK=35345489600en_HK

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