Interactions of root rot pathogens and pea leaf weevil in field pea

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dc.contributor.authorWillsey, Telsa
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorChatterton, Syama
dc.contributor.supervisorThomas, James E.
dc.date.accessioned2018-09-13T21:31:03Z
dc.date.available2018-09-13T21:31:03Z
dc.date.issued2018
dc.degree.levelMastersen_US
dc.description.abstractAdditive or synergistic interactions between Aphanomyces euteiches, Fusarium spp., and the pea leaf weevil Sitona lineatus have the potential to increase yield loss in commercial pea crops. Greenhouse studies indicated that A. euteiches and S. lineatus are significant risk factors for increased severity of fusarium root rot. Sensitive, species-specific primers and probes for A. euteiches and field pea were developed, and multiplex qPCR indicated significant changes in colonization dynamics when multiple pathogens were present. qPCR assays also demonstrated that A. euteiches and Fusarium spp. co-infect pea roots under field conditions. The fungicides ethaboxam and fludioxonil did not reduce disease severity in pea or faba bean during a two-year field study. Thiamethoxam reduced nodule and foliar herbivory, whereas lambda-cyhalothrin and nitrogen fertilizer had no impact. No single or combined treatment improved yield or seed size, therefore an effective method of managing these constraints to pea production is still required.en_US
dc.description.sponsorshipAgriculture and Agri-Food Canada, Alberta Crop Industry Fund, Alberta Pulse Growers, Western Grains Research Foundationen_US
dc.embargoNoen_US
dc.identifier.urihttps://hdl.handle.net/10133/5197
dc.language.isoen_USen_US
dc.proquest.subject0480en_US
dc.proquest.subject0353en_US
dc.proquest.subject0410en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : Universtiy of Lethbridge, Department of Biological Sciencesen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectDried peas -- Yielden_US
dc.subjectDried peas -- Diseases and pests -- Integrated control -- Researchen_US
dc.subjectDried peas -- Diseases and pests -- Control -- Researchen_US
dc.subjectAgricultural pests -- Control -- Researchen_US
dc.subjectAgricultural pests -- Integrated control -- Researchen_US
dc.subjectSitona lineataen_US
dc.subjectFusariumen_US
dc.subjectRoot rotsen_US
dc.subjectAphanomyces euteichesen_US
dc.subjectPhytopathogenic microorganisms -- Control -- Researchen_US
dc.subjectPlant-pathogen relationships -- Researchen_US
dc.subjectcrop yield inhibitorsen_US
dc.subjectfield pea cropsen_US
dc.subjectfusarium root roten_US
dc.subjecthost-pathogen interactionsen_US
dc.subjectpea leaf weevilen_US
dc.subjectpest and disease managementen_US
dc.titleInteractions of root rot pathogens and pea leaf weevil in field peaen_US
dc.typeThesisen_US
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