The reproductive biology of Clematis addisonii

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dc.contributor.authorEdwards, Rhonda L.en
dc.contributor.committeechairPorter, Duncan M.en
dc.contributor.committeememberNilsen, Erik T.en
dc.contributor.committeememberWest, David A.en
dc.contributor.departmentBiologyen
dc.date.accessioned2014-03-14T21:35:18Zen
dc.date.adate2009-05-02en
dc.date.available2014-03-14T21:35:18Zen
dc.date.issued1995-06-05en
dc.date.rdate2009-05-02en
dc.date.sdate2009-05-02en
dc.description.abstract<i>Clematis addisonii</i> Britton (Ranunculaceae) is a Virginia endemic restricted to calcareous soils in a four county region of the Ridge and Valley Province in Virginia. A two year study of the reproductive biology of this species reveals that it is self-compatible, showing no significant reduction in fecundity following self-pollinations. Morphological observations indicate that this species is protogynous. <i>In vivo</i> pollen tube growth supports this conclusion. Field observations suggest that the morphological pistillate phase lasts significantly longer than the staminate phase and is sufficient enough in length that cross-pollination is likely to occur during the time period preceding the staminate phase. The secretion of nectar from the onset of anthesis enhances the probability that outcrossing will occur prior to the presence of self-pollen in flowers. These findings suggest that, in spite of self-compatibility, populations of <i>Clematis addisonii</i> are capable of maintaining high levels of outcrossing by virtue of protogyny and nectar secretion from the onset of anthesis.en
dc.description.degreeMaster of Scienceen
dc.format.extentviii, 113 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-05022009-040500en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05022009-040500/en
dc.identifier.urihttp://hdl.handle.net/10919/42395en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1995.E393.pdfen
dc.relation.isformatofOCLC# 34353647en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectplant propagationen
dc.subject.lccLD5655.V855 1995.E393en
dc.titleThe reproductive biology of Clematis addisoniien
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineBiologyen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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