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dc.contributor.authorWang, Jingyi
dc.date.accessioned2017-12-11T17:42:40Z
dc.date.available2017-12-11T17:42:40Z
dc.identifier.urihttp://hdl.handle.net/10222/73500
dc.description.abstractPost-harvest needle abscission is a major challenge for the Christmas tree industry in Atlantic Canada. To further elucidate the physiological basis of needle loss in Balsam fir, experiments were conducted to investigate the possible link between certain hydrolytic enzymes and post-harvest needle abscission in balsam fir. This study focussed on the role of enzymes, pectinase and cellulase, in post-harvest needle abscission. Following harvest, cumulative cellulase activity increased over time prior to needle loss on both high and low needle retention duration (NRD) clones. Total cellulase activity of low NRD clone was much higher than that of high NRD clone. Pectinase does not affect needle abscission in this study. If cellulase activity is linked to post-harvest needle abscission, then inhibiting cellulase enzyme would reduce needle loss. Pre-treating branches with 2.5g 1-methylcyclopropene (1-MCP) enhanced needle retention.en_US
dc.language.isoenen_US
dc.subjectPost-harvest needle abscissionen_US
dc.subjectPectinaseen_US
dc.subjectCellulaseen_US
dc.subjectBalsam firen_US
dc.titleTHE RELATIONSHIP BETWEEN PECTINASE AND CELLULASE AND POST-HARVEST NEEDLE ABSCISSION IN BALSAM FIR (Abies balsamea (L.))en_US
dc.typeThesis
dc.date.defence2017-12-04
dc.contributor.departmentFaculty of Agricultureen_US
dc.contributor.degreeMaster of Scienceen_US
dc.contributor.external-examinerDr. Steeve Pepinen_US
dc.contributor.graduate-coordinatorHaibo Niuen_US
dc.contributor.thesis-readerDr. Claude Caldwellen_US
dc.contributor.thesis-readerDr. Alex Martynenkoen_US
dc.contributor.thesis-supervisorDr. Rajasekaran Ladaen_US
dc.contributor.ethics-approvalNot Applicableen_US
dc.contributor.manuscriptsNot Applicableen_US
dc.contributor.copyright-releaseNot Applicableen_US
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