Abstract
The sensitivity of isolates of Penicillium expansum and P. solitum from pomefruits was determined for imazalil and iprodione fungicides. Ten of the cultures had been collected and freeze dried before either fungicide was used in New South Wales and therefore represent “wild’ biotypes in relation to these fungicides. The mean EC50 of P. expansum to imazalil was 1.094 ± 0.195 μg/mL (range 0.5742.425) and to iprodione 0.989 ± 0.667 μg/mL (range 0.7031.243). The mean EC50 of P. solitum to imazalil was 1.695 ±0.322 μgmL (range 0.735–2.927) and to iprodione 1.333 ± 0.120 μg/mL (range 0.740–1.529). The availability of such baseline sensitivity figures will permit accurate detection of population shifts towards fungicide resistance should it occur.
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Penrose, L.J. Baseline sensitivities of preserved isolates of Penicillium spp. from pomefruit to imazalil and iprodione. Australasian Plant Pathology 22, 37–39 (1993). https://doi.org/10.1071/APP9930037
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DOI: https://doi.org/10.1071/APP9930037