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Effects of defoliation on blackcurrant infection by Armillaria species

Popoola, T.O.S. and Fox, R.T.V. (2004) Effects of defoliation on blackcurrant infection by Armillaria species. Moor Journal of Agricultural Research, 4 (1). pp. 111-117. ISSN 1595-4153

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Field inoculation trials and laboratory studies were used to investigate the effects of defoliation stress on potted black currant plants and the infection by English and African isolates of Armillaria. Defoliation has varying effects on the carbohydrate, fatty acids and amino acids contents of roots. All isolates of Armillaria tested infected black currant plants irrespective of stress treatment; with two of the test isolates, more of the infected plants were killed with defoliation treatment. Media supplemented with water extract from defoliated roots stimulated growth of isolates compared to media supplemented with extract from non-defoliated control root tissues. The differences observed in the pathogenic behaviour of isolates, may be of importance in the epidemiology of Armillaria infections.

Item Type:Article
Divisions:Life Sciences > School of Biological Sciences
ID Code:10585
Uncontrolled Keywords:Defoliation stress, Armillaria spp, blackcurrant

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