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dc.contributor.authorPuglisi, Sadie Ericaen_US
dc.date.accessioned2014-03-14T20:45:08Z
dc.date.available2014-03-14T20:45:08Z
dc.date.issued2002-07-24en_US
dc.identifier.otheretd-09102002-174147en_US
dc.identifier.urihttp://hdl.handle.net/10919/35000
dc.description.abstractClematis spp. L. is a twining vine covered in showy blooms. Typical growth of hybrids is from the main leader, producing a thin, unbranched plant with one cyme. Apical dominance is released by cutting back the vine during production. Cutting back, or pinching, of a plant is labor intensive and compromises bloom for vegetative growth at time of sales. The purpose of this project was to eliminate manual pinching by treating young plants with chemical plant growth regulators (PGRs) that enhance branching without removal of the apical meristem. The first project evaluated the use of Atrimmec (dikegulac sodium), Fascination (BA+GA4+7), Florel (ethephon), and Dropp 50 (thidiazuron) on Clematis cultivars Ernest Markham, and Hagley Hybrid, and Clematis viticella 'Polish Spirit.' Plants treated with 800 mg·L-1 Atrimmec, or 800 or 1200 mg·L-1 Fascination experienced an increase in branch numbers. The second experiment manipulated the ratio of the components of Fascination, 6-BA and GA4+7, to reduce phytotoxicity experienced in the first experiment. The optimal ratio to enhance branching was 1:1, which is the stock solution for Fascination. All ratios produced phytotoxic symptoms. A third experiment tested lower rates of thidiazuron and added CPPU (forchlorfenuron) to the list of PGRs to test. The last experiment took the most effective PGR treatments, Atrimmec at 800 mg·L-1, and Fascination at 800 or 1200 mg·L-1, and compared them to the current production practices of pinching. Large flowering cultivars of clematis were used, including 'Comotesse de Bouchard,' 'Ernest Markham,' and 'Hagley Hybrid.' Atrimmec increased branch numbers and suppressed leader lengths without a mechanical pinch. Results from Fascination varied by cultivar.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartsadiethesis.pdfen_US
dc.relation.haspartBio.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectGA4+7en_US
dc.subjectethephonen_US
dc.subjectdikegulacen_US
dc.subjectPGRen_US
dc.subjectBAen_US
dc.subjectthidiazuronen_US
dc.subjectforchlorfenuronen_US
dc.titleUse of Plant Growth Regulators to Increase Branching of Clematis Spp.en_US
dc.typeThesisen_US
dc.contributor.departmentHorticultureen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineHorticultureen_US
dc.contributor.committeechairLatimer, Joyce G.en_US
dc.contributor.committeememberEaton, Gregory K.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09102002-174147/en_US
dc.contributor.committeecochairScoggins, Holly L.en_US
dc.date.sdate2002-09-10en_US
dc.date.rdate2003-10-18
dc.date.adate2002-10-18en_US


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