Show simple item record

dc.contributor.authorCase, Andrea L.en_US
dc.coverage.spatialUMBS Greenhouseen_US
dc.date.accessioned2007-06-14T22:05:04Z
dc.date.available2007-06-14T22:05:04Z
dc.date.issued1993en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/54417
dc.description.abstractRising atmospheric carbon dioxide may become a stronger selection force in a future environment if certain genotypes exhibit differential responses to elevated CO2. Heritable variation must be present within natural populations for a given trait, and such variation must convey greater fitness for adaptive changes to occur. I tested for heritable variation in stomatal traits in a weedy annual, Raphanus raphanistrum. Effects on stomatal index (# stomata/total # epidermal cells), stomatal length, and frequencies of both stomata and epidermal cells were addressed. Progeny from 12 paternal families and three maternal families were grown at ambient and twice ambient CO2 using open-top chambers (144 plants per treatment). Across treatments, elevated CO2 increased stomatal index by 6% and decreased stomatal size by 10%. Within treatments, paternal families differed in their responses to elevated CO2, showing significant genotype x environment interactions. Our results indicate the presence of intrapopulational genetic variation in stomatal traits and differential responses of these traits to elevated CO2.en_US
dc.format.extent920619 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.otherCARBONen_US
dc.subject.otherDIOXIDEen_US
dc.subject.otherELEVATEDen_US
dc.subject.otherRAPHANUSen_US
dc.subject.otherATMOSPHERICen_US
dc.subject.otherSTOMATESen_US
dc.subject.otherVARIATIONen_US
dc.subject.otherLIFEen_US
dc.subject.otherHISTORYen_US
dc.subject.otherGENOTYPEen_US
dc.subject.otherGENETICen_US
dc.titleEffects of elevated CO2 and paternal family on stomatal index and size in wild radish (Raphanus 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/2027.42/54417/1/2854.pdfen_US
dc.description.filedescriptionDescription of 2854.pdf : Access restricted to on-site users at the U-M Biological Station.en_US
dc.owningcollnameBiological Station, University of Michigan (UMBS)


Files in this item

Show simple item record