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Pollinator preference and the potential persistence of crop genes in wild radish.

dc.contributor.authorLee, Teden_US
dc.coverage.spatialUMBS Campusen_US
dc.date.accessioned2007-06-14T22:40:53Z
dc.date.available2007-06-14T22:40:53Z
dc.date.issued1996en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/54676
dc.description.abstractCrop-weed hybridization has the potential to influence the evolutionary ecology of wild populations. While it is known that many crops are able to hybridize with their wild weedy relatives, few studies have yet looked at the long-term persistence of crop genes in the wild. This study investigates one step in the hybridization process in radish-differential pollinator visitation to wild (Raphanus raphanistrum) and crop-wild hybrid (R. sativus-R. raphanistrum) radish. In experimental arrays with equal numbers of potted wild (yellow-flowered) and hybrid (white-flowered) plants, total pollinator visitation was significantly biased toward the wild plants. Syrphid flies, the major pollinators, preferred wild plants while bumble bees showed no preference. This was also true when wild plants were rare in the array (12 hybrid:2 wild). However, when hybrid plants were rare (2 hybrid:12 wild), no preference was shown by either pollinator group. These results suggest that crop genes may not be selected against when rare, and therefore, could persist at low frequencies in wild populations. However, the rate at which crop genes move into the wild and the degree to which they persist will depend on the composition of local pollinators.en_US
dc.format.extent380530 bytes
dc.format.extent3144 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.relation.haspartDiagram or Illustrationen_US
dc.relation.haspartGraphen_US
dc.relation.haspartTable of Numbersen_US
dc.subjectUndergraduate Research Exper.en_US
dc.subject.otherVASCULARen_US
dc.subject.otherPLANTSen_US
dc.subject.otherRAPHANUSen_US
dc.subject.otherHYBRIDIZATIONen_US
dc.subject.otherGENETICSen_US
dc.subject.otherGENEen_US
dc.subject.otherFLOWen_US
dc.subject.otherPOLLINATIONen_US
dc.subject.otherDIPTERAen_US
dc.subject.otherSYRPHIDAEen_US
dc.subject.otherHYMENOPTERAen_US
dc.titlePollinator preference and the potential persistence of crop genes in wild radish.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/2027.42/54676/1/3116.pdfen_US
dc.description.filedescriptionDescription of 3116.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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