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dc.contributor.authorBeresford, Saraen_US
dc.coverage.spatialUMBS Campusen_US
dc.date.accessioned2007-06-14T22:38:01Z
dc.date.available2007-06-14T22:38:01Z
dc.date.issued1996en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/54655
dc.description.abstractCrop-wild hybrid (Raphanus sativus x R. raphanistrum) and wild radishes (R. raphanistrum) were grown under three sets of experimental conditions: limited nutrient availability, shared resources, and with interspecific competition with Lolium perenne, a perennial ryegrass. Under the former two conditions, the hybrid radishes flowered significantly later and were significantly larger at bolting than the wild radishes. Ovule number was not significantly different between the two radish genotypes in either treatment. In contrast, in the presence of the ryegrass, the wilds were significantly larger at day 24 than the hybrids. It was also found that the crop-wild hybrids have significantly reduced male fitness in terms of pollen viability. These results demonstrate that under natural competitive conditions, the wilds, at least in terms of vegetation, have an advantage over the hybrids, which may decrease hybrid fitness and thus the persistence of crop genes in wild populations of radish.en_US
dc.format.extent452467 bytes
dc.format.extent3144 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.relation.haspartGraphen_US
dc.relation.haspartTable of Numbersen_US
dc.subjectUndergraduate Research Exper.en_US
dc.subject.otherGENETICen_US
dc.subject.otherENGINEERINGen_US
dc.subject.otherCROPSen_US
dc.subject.otherWILDen_US
dc.subject.otherHYBRIDSen_US
dc.subject.otherHYBRIDIZATIONen_US
dc.subject.otherVASCULARen_US
dc.subject.otherPLANTSen_US
dc.subject.otherRAPHANUSen_US
dc.subject.otherFITNESSen_US
dc.subject.otherLOLIUMen_US
dc.subject.otherNUTRIENTSen_US
dc.titleRelative fitness and competitive ability of the crop-wild hybrid (Raphanus raphanistrum x R. sativus) versus the wild radish (R. raphanistrum).en_US
dc.typeWorking Paperen_US
dc.subject.hlbsecondlevelNatural Resource and Environmenten_US
dc.subject.hlbtoplevelScienceen_US
dc.contributor.affiliationumBiological Station, University of Michiganen_US
dc.contributor.affiliationumcampusAnn Arboren_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/54655/1/3095.pdfen_US
dc.description.filedescriptionDescription of 3095.pdf : Access restricted to on-site users at the U-M Biological Station.en_US
dc.owningcollnameBiological Station, University of Michigan (UMBS)


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