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Abstract

Light leaf spot is caused by the fungal pathogen Pyrenopeziza brassicae and is the mosteconomically damaging disease of oilseed rape (Brassica napus) in the UK. Current controlrelies on repeated fungicide applications; however, pathogen fungicide-insensitivitydevelopment highlights the need for non-chemical controls like host resistance. A study wasdone to assess light leaf spot disease phenotype on the susceptible B. napus cultivar Charger indifferent treatment conditions; factors studied included plant age and inoculum concentration.Results showed that older plants grown in a controlled-environment cabinet produced the mostvisible symptoms. Plants that received a greater inoculum concentration (105spores/ml) weresignificantly shorter by 5 cm than those inoculated with a smaller inoculum concentration (104spores/ml), suggesting possible correlations between fungal inoculum concentration and plantgrowth. Additionally, > 20 P. brassicae field isolates were collected from leaf samples acrossEngland through single-spore isolation and will be screened for virulence.
Original languageEnglish
Title of host publicationManagement of Diseases and Pests of Oilseed Rape
Subtitle of host publicationPapers from a forum held at the University of Hertfordshire
EditorsGraham J Jellis, Bruce D L Fitt
Place of PublicationUnited Kingdom
Pages38-41
Number of pages4
Publication statusPublished - 16 Jun 2021
EventManagement of oilseed rape diseases and pests
- University of Hertfordshire, Hatfield, United Kingdom
Duration: 16 Jun 202116 Jun 2021
https://www.afcp.org.uk/oilseedrapeforum2021

Conference

ConferenceManagement of oilseed rape diseases and pests
Country/TerritoryUnited Kingdom
CityHatfield
Period16/06/2116/06/21
Internet address

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