A Bioassay for Asparagus (Asparagus officinalis L.) Resistance to Stemphylium vesicarium

Simple item page
dc.contributor.advisorMcDonald, Mary Ruth
dc.contributor.authorAustin, George
dc.date.accessioned2023-01-12T15:18:35Z
dc.date.available2023-01-12T15:18:35Z
dc.date.copyright2023-01
dc.date.created2022-11-21
dc.degree.departmentDepartment of Plant Agricultureen_US
dc.degree.grantorUniversity of Guelphen
dc.degree.nameMaster of Scienceen_US
dc.degree.programmePlant Agricultureen_US
dc.description.abstractPurple spot, caused by Stemphylium vesicarium (Wallr.) E. Simmons, is one of the most important diseases facing asparagus producers in Ontario. Four cultivars, Jersey Giant, Guelph Millennium, Guelph Eclipse, and Gijnlim were examined in the field and in detached-spear controlled environment assays for reaction to S. vesicarium infection. Consistent results were achieved in the controlled environment assays and cultivar, location on the spear, isolate, wounding, and lighting were each found to affect lesion formation. In the field, an interaction was identified between cultivar resistance and acute weather, especially heavy rainfall, before and during a critical infection period. In controlled environment studies there was an interaction between cultivar and location of inoculation on the spear, whether near the top or base. The bioassay was useful for assessing some mechanisms of resistance, but inoculating attached spears in the field, while accounting for weather, is recommended for determining realistic field results.en_US
dc.identifier.urihttps://hdl.handle.net/10214/27426
dc.language.isoenen_US
dc.publisherUniversity of Guelphen
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectAsparagusen_US
dc.subjectasparagus officinalisen_US
dc.subjectpurple spoten_US
dc.subjectstemphylium vesicariumen_US
dc.subjectbioassayen_US
dc.subjectdetached assayen_US
dc.subjectplant pathologyen_US
dc.titleA Bioassay for Asparagus (Asparagus officinalis L.) Resistance to Stemphylium vesicariumen_US
dc.typeThesisen
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Austin_George_202301_MSc.pdf
Size:
723.84 KB
Format:
Adobe Portable Document Format
Description:
Thesis
Download
Collections
Theses & Dissertations - All (2011-
Theses & Dissertations - Harvested by LAC