Fungitoxicity of acetaldehyde vapour to some major post-harvest pathogens of citrus and subtropical fruits |
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Authors: | KRISHNA PRASAD |
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Institution: | Department of Horticulture, University of Maryland, College Park, Maryland 20742, U.S.A. |
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Abstract: | In laboratory trials, fumigation with acetaldehyde vapour at 0–75 to 20 % concentration (v/v) for 0–5 to 120 min at 21 oC killed six species of post-harvest citrus pathogens grown on agar media. The fungicidal effect of acetaldehyde vapour at this temperature was a function of concentration and exposure. Penicillium digitatum and P. italicum were not as susceptible to inhibition of spore germination as Alternaria citri, A. tenuis, Colletotrichum gloeosporioides and Glomerella cingulata. A concentration of 10 % acetaldehyde vapour at 21 oC for 10 min was fungitoxic to all the pathogens tested. |
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