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Biological control of Sclerotinia and other fungi during moist storage of Quercus robur seeds
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Finch-Savage, William E., Clay, H. A., Budge, S. P., Dent, K. C., Clarkson, John P. and Whipps, J. M. (2003) Biological control of Sclerotinia and other fungi during moist storage of Quercus robur seeds. European Journal of Plant Pathology, Volume 109 (Number 6). pp. 615-624. doi:10.1023/A:1024784831972 ISSN 0929-1873.
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Official URL: http://dx.doi.org/10.1023/A:1024784831972
Abstract
The fungal pathogen Sclerotinia pseudotuberosa is a major cause of deterioration during storage of Quercus robur seeds (acorns) and along with other, mainly saprotrophic fungi, contributes to the decline of viability and vigour in the acorn population. Hot-water thermotherapy (HWT; 41 ◦C for 2.5 h) killed the fungal pathogen S. pseudotuberosa and prolonged the storage life of acorns. The addition of the systemic fungicide benomyl to the HWT and/or the broadspectrum fungicide thiram as a seed dressing further enhanced the storage life of acorns. Three fungal antagonists, Coniothyrium minitans, Trichoderma sp. (KW3) and Trichoderma virens (G20), were also applied as a film-coating to acorns using a polyvinylacetate sticker achieving ca. 107–108 viable conidia per acorn. The biological treatments provided protection against infection and the spread of infection of S. pseudotuberosa and other fungi on the acorns during storage over several months. All treated and stored acorns grew normally following sowing in seedbeds. The Trichoderma species were more effective than C. minitans, with T. virens being the most effective. T. virens reduced pathogen spread from acorns infected with S. pseudotuberosa to ‘clean’ acorns when T. virens coated infected and ‘clean’ acorns were mixed together. However, T. virens was less effective than HWT at preventing the proliferation of this pathogen within individual acorns that were infected before coating. A combination of HWT and subsequent coating with T. virens provided a more effective control against both S. pseudotuberosa and saprotrophic fungi than when either treatment was applied alone.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QK Botany S Agriculture > SB Plant culture |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||
Library of Congress Subject Headings (LCSH): | English oak , Sclerotinia -- Biological control , Fungi -- Biological control | ||||
Journal or Publication Title: | European Journal of Plant Pathology | ||||
Publisher: | Springer Verlag | ||||
ISSN: | 0929-1873 | ||||
Official Date: | 2003 | ||||
Dates: |
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Volume: | Volume 109 | ||||
Number: | Number 6 | ||||
Page Range: | pp. 615-624 | ||||
DOI: | 10.1023/A:1024784831972 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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