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Research into crown rot and wilt diseases of strawberries in Queensland

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Paynter, M. L., Gomez, A., Ko, L. and Herrington, M. E. (2016) Research into crown rot and wilt diseases of strawberries in Queensland. Acta Horticulturae, 1117 . pp. 163-169.

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Article Link: http://dx.doi.org/10.17660/ActaHortic.2016.1117.26

Abstract

Plant losses due to fungal diseases in strawberry (Fragaria × ananassa Duch.) can potentially cause total loss of production. Three fungal pathogens, Fusarium oxysporum f. sp. fragariae, Colletotrichum gloeosporioides and Macrophomina phaseolina, cause similar crown rot and wilt symptoms in strawberries in Queensland. Since the withdrawal of methyl bromide in 2005, no effective chemical control of any of the three pathogens has been available. This study aims at identifying sources of plant genetic resistance that can be used in the breeding program to develop resistant cultivars for use as part of an integrated disease management plan in commercial strawberry production. Results from glasshouse pathogenicity and screening trials on the three pathogens showed that when breeding for resistance against a pathogen, resistance to other pathogens also needs to be considered, e.g., cultivar 'Festival' is resistant to F. oxysporum f. sp. fragariae, but is highly susceptible to C. gloeosporioides. The cultivars 'Earlisweet', 'Kabarla' and 'Phenomenal', two seedling clones and four DAFF breeding lines were resistant to C. gloeosporioides. Cultivar 'Suncoast Delight' showed the most promising level of resistance to M. phaseolina. These cultivars, breeding lines and seedling selections have been made available for incorporation into the crossing program to support the Queensland strawberry breeding program.

Item Type:Article
Business groups:Horticulture and Forestry Science
Keywords:Colletotrichum gloeosporioides Fusarium oxysporum Macrophomina phaseolina Pathogenicity Resistance
Subjects:Plant culture > Fruit and fruit culture > Berries and small fruits
Plant pests and diseases > Pest control and treatment of diseases. Plant protection
Live Archive:12 Aug 2016 02:04
Last Modified:03 Nov 2022 03:59

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