File(s) under permanent embargo
Objective measures for powdery mildew
report
posted on 2023-05-25, 04:47 authored by Scott, ES, Petrovic, T, Kravchuk, O, Zanker, T, Emmett, RWPowdery mildew compromises wine quality. Visual inspection, currently used to estimate disease severity, is subjective and prone to inaccuracy. Research was undertaken to improve visual assessment and to develop objective measures. A diagrammatic key and smartphone app, with supporting online training resource, were developed, trialled in Australia in 2015 and released globally in 2016. A DNA-based assay (qPCR) was developed for absolute quantification of powdery mildew fungus in grapes. Mid- and near-infrared spectroscopy proved insufficiently sensitive to discriminate levels of powdery mildew severity critical to the sector. Arachidic fatty acid was identified as a potential biomarker for quantifying powdery mildew on grapes.
Funding
Wine Australia
History
Commissioning body
Australian Grape and Wine AuthorityNumber
UA1202Pagination
100Publisher
Australian Grape and Wine AuthorityPlace of publication
AustraliaRepository Status
- Restricted