Protection of maize seedlings byFusarium moniliforme against infection byFusarium graminearum in the soil |
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| Authors: | P S Van Wyk D J Scholtz W F O Marasas |
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| Institution: | (1) Department of Plant Pathology, University of the Orange Free State, P.O. Box 339, 9300 Bloemfontein, Republic of South Africa;(2) Grain Crops Research Institute, Private Bag X1251, 2520 Potchefstroom, Republic of South Africa;(3) South African Medical Research Council, P.O. Box 70, 7505 Tygerberg, Republic of South Africa |
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| Abstract: | The incidence ofFusarium moniliforme in surface-sterilized kernels in two commercial South African white maize cultivars was 64% and 6%, respectively. Heat treatment
completely eliminated seedborneF. moniliforme from kernels of both cultivars. Heat treated, uncontaminated maize germlings were pre-inoculated with different isolates
ofF. moniliforme and planted in steam-treated soil containing inoculum of different isolates ofF. graminearum Group 1 and Group 2. Seedling weights of germlings pre-inoculated with some isolates ofF. moniliforme were significantly higher than those of controls when exposed to some isolates ofF. graminearum in the soil. The protective effect of pre-inoculation withF. moniliforme was particularly evident in maize seedlings exposed to inoculum of an aggressive isolate ofF. graminearum Group 1. This is the first report of the protection of maize seedlings byF. moniliforme against infection byF. graminearum in the soil. |
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| Keywords: | Fusarium moniliforme F graminearum induced resistance maize |
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