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Effects of conidial concentration and stigma wetness period on infection by the sorghum ergot pathogen Claviceps africana

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Bhuiyan, S. A., Ryley, M. J., Galea, V. J., Tay, D. and Lisle, A. T. (2009) Effects of conidial concentration and stigma wetness period on infection by the sorghum ergot pathogen Claviceps africana. Australasian Plant Pathology, 38 (5). pp. 496-499. ISSN 1448-6032

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Article Link: https://doi.org/10.1071/AP09032

Abstract

The effect of conidial concentration and length of stigma wetness period on infection of sorghum spikelets by Claviceps africana was studied in a controlled environment experiment. Aspore concentration of at least 106 conidia/mL was required for maximum infection on sorghum panicles. Maximum infection occurred during a stigma wetness period between 4.5 and 6 h. Approximately 11–15% infection occurred when stigmas had been dried immediately after inoculation. This study demonstrated that the stigma wetness is an important parameter in sorghum ergot epidemiology.

Item Type:Article
Business groups:Crop and Food Science
Subjects:Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Plant culture > Field crops > Sorghum
Plant pests and diseases > Plant pathology
Live Archive:02 Feb 2022 23:38
Last Modified:02 Feb 2022 23:38

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