Local differentiation amidst extensive allele sharing in Oryza nivara and O. rufipogon.

Vista sencilla de ítem
dc.creatorBanaticla-Hilario, Maria Celeste N.
dc.creatorvan den Berg, Ronald G.
dc.creatorHamilton, Ruaraidh Sackville
dc.creatorMcNally, Kenneth L.
dc.date2013-09
dc.date2024-12-19T12:55:16Z
dc.date2024-12-19T12:55:16Z
dc.date.accessioned2026-06-27T04:13:25Z
dc.descriptionGenetic variation patterns within and between species may change along geographic gradients and at different spatial scales. This was revealed by microsatellite data at 29 loci obtained from 119 accessions of three Oryza series Sativae species in Asia Pacific: Oryza nivara Sharma and Shastry, O. rufipogon Griff., and O. meridionalis Ng. Genetic similarities between O. nivara and O. rufipogon across their distribution are evident in the clustering and ordination results and in the large proportion of shared alleles between these taxa. However, local‐level species separation is recognized by Bayesian clustering and neighbor‐joining analyses. At the regional scale, the two species seem more differentiated in South Asia than in Southeast Asia as revealed by FST analysis. The presence of strong gene flow barriers in smaller spatial units is also suggested in the analysis of molecular variance (AMOVA) results where 64% of the genetic variation is contained among populations (as compared to 26% within populations and 10% among species). Oryza nivara (HE = 0.67) exhibits slightly lower diversity and greater population differentiation than O. rufipogon (HE = 0.70). Bayesian inference identified four, and at a finer structural level eight, genetically distinct population groups that correspond to geographic populations within the three taxa. Oryza meridionalis and the Nepalese O. nivara seemed diverged from all the population groups of the series, whereas the Australasian O. rufipogon appeared distinct from the rest of the species.
dc.identifierhttps://hdl.handle.net/10568/165613
dc.identifier.urihttp://hdl.handle.net/123456789/25645
dc.languageen
dc.publisherWiley
dc.rightsOpen Access
dc.sourceBanaticla‐Hilario, Maria Celeste N.; van den Berg, Ronald G.; Hamilton, Nigel Ruaraidh Sackville and McNally, Kenneth L. 2013. Local differentiation amidst extensive allele sharing in Oryza nivara and O. rufipogon. Ecology and Evolution, Volume 3 no. 9 p. 3047-3062
dc.subjectalleles
dc.subjectasia
dc.subjectgenetic variation
dc.subjectgeographic distribution
dc.subjectmicrosatellite
dc.subjectoryza meridionalis
dc.subjectoryza nivara
dc.subjectoryza rufipogon
dc.subjectvarieties
dc.titleLocal differentiation amidst extensive allele sharing in Oryza nivara and O. rufipogon.
dc.typeJournal Article

Archivos

Colecciones

Instituto Internacional de Investigación del Arroz (IRRI)