Preventing Loss of Winter Hardiness in Turfgrass on Golf Greens and Fairways in the Late Winter

dc.contributor.advisorLyons, Eric
dc.contributor.authorFlude, Corey
dc.date.accessioned2019-08-09T13:58:40Z
dc.date.available2019-08-09T13:58:40Z
dc.date.copyrightAug-19
dc.date.created2019-06-27
dc.date.issued2019-08-09
dc.degree.departmentDepartment of Plant Agricultureen_US
dc.degree.departmentGuelph Turfgrass Instituteen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.degree.programmePlant Agricultureen_US
dc.description.abstractPlant growth regulators (PGRs) such as gibberellic acid (GA3), abscisic acid (ABA) and trinexapac-ethyl (TE) can be applied to turfgrasses to promote winter hardiness. Lethal temperature of 50% mortality measurements revealed that application of these PGRs had no effect on the acclimation status of creeping bentgrass and annual bluegrass for the months of January, February and March. Fall PGR application decreased acclimation status for annual bluegrass, whereas ABA and GA3 applications increased acclimation status for creeping bentgrass in April. Treatment with exogeneous ABA increased endogenous ABA levels in annual bluegrass. A simulated warming event in a growth chamber in late winter resulted in a loss of acclimation status for both grasses compared to a control. GA3 increased annual bluegrass photosynthesis and TE decreased creeping bentgrass photosynthesis during the warming event. PGRs are beneficial for maintaining the acclimation status of creeping bentgrass, while reducing the acclimation status of annual bluegrass.en_US
dc.identifier.urihttp://hdl.handle.net/10214/16852
dc.language.isoenen_US
dc.publisherUniversity of Guelphen_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectplant growth regulatorsen_US
dc.subjectwinter hardinessen_US
dc.subjectde-acclimationen_US
dc.subjectLT50en_US
dc.subjectcold toleranceen_US
dc.subjectwinter survivalen_US
dc.titlePreventing Loss of Winter Hardiness in Turfgrass on Golf Greens and Fairways in the Late Winteren_US
dc.typeThesisen_US

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