Genetic diversity in wild wheats and goat grass

cg.contactgiles.waines@ucr.eduen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerUniversity of California-San Diego - UCSDen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.date.embargo-end-dateTimelessen_US
cg.identifier.doihttps://dx.doi.org/10.1007/s001220051484en_US
cg.isijournalISI Journalen_US
cg.issn0040-5752en_US
cg.issn1432-2242en_US
cg.journalTAG Theoretical and Applied Geneticsen_US
cg.subject.agrovocconservationen_US
cg.subject.agrovocgoat grassen_US
cg.volume101en_US
dc.contributorValkoun, Janen_US
dc.contributorWaines, J. G.en_US
dc.creatorHegde, S. G.en_US
dc.date.accessioned2021-11-12T00:46:57Z
dc.date.available2021-11-12T00:46:57Z
dc.description.abstractThe genetic structure of 35 populations of wild relatives of cultivated wheats, all collected in Syria and Lebanon, was assessed using ten isozymes. The populations consisted of diploid goat grass, Aegilops speltoides, diploid wild wheats, Triticum monococcum spp. aegilopoides and T. urartu, and tetraploid wild wheat, T. turgidum ssp. dicoccoides. The majority of the populations were polymorphic (P=0-70%) having low within-population mean genetic diversity (H-ep=0.05-0.10) and relatively high within-species genetic diversity (H-es=0.14-0.31). The linkage between loci did not seem to be one of the causes for the observed polymorphism. All four species showed significant inbreeding at both the population (0.31-0.64) and species (0.77-0.96) levels, and the extent of inbreeding did not correlate with mating systems. Despite their apparent common ecological and evolutionary history, between-population or between-species level genetic identity was low (I=0.43-0.86), Among the diploid species, populations of Ae. speltoides clustered distinctly from those overlapping clusters of T. monococcum ssp. aegilopoides and T. urartu. The tetraploid species T. turginum ssp. dicoccoides had relatively less genetic diversity (H-es=0.14) and was highly homozygous (F=0.96), The results suggest that these wild progenitors of cultivated wheats have undergone extensive local differentiation and inbreeding. We discuss the implications of our results on the management of wild wheat and goat grass populations.en_US
dc.identifierhttps://mel.cgiar.org/dspace/limiteden_US
dc.identifier.citationS. G. Hegde, Jan Valkoun, J. G. Waines. (1/7/2000). Genetic diversity in wild wheats and goat grass. TAG Theoretical and Applied Genetics, 101, pp. 309-316.en_US
dc.identifier.statusTimeless limited accessen_US
dc.identifier.urihttps://hdl.handle.net/20.500.11766/66373
dc.languageenen_US
dc.publisherSpringer (part of Springer Nature)en_US
dc.sourceTAG Theoretical and Applied Genetics;101,Pagination 309-316en_US
dc.subjectgenetic diversityen_US
dc.subjectisozymeen_US
dc.subjectwild wheaten_US
dc.subjectWild Wheaten_US
dc.titleGenetic diversity in wild wheats and goat grassen_US
dc.typeJournal Articleen_US
dcterms.available2000-07-01en_US
dcterms.extent309-316en_US
dcterms.issued2000-07-01en_US
mel.impact-factor5.699en_US

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